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Comment Search results for posted by Jer :
List Comments Posted in the Last:
Difficulty: 4 of 5Under Add one more circle (in Geometry)
Posted on 2017-05-21 (5 Comments)
re: Stumped by Jer (2017-05-23 07:32:14)
Difficulty: 2 of 5Under Four balls (in Probability)
Posted on 2017-05-19 (20 Comments)
Solution Solution by Jer (2017-05-19 11:56:13)
Difficulty: 2 of 5Under Not every prime qualifies! (in Numbers)
Posted on 2017-05-15 (1 Comments)
Solution Solution by Jer (2017-05-15 09:25:46)
Difficulty: 3 of 5Under One more line (in Logic)
Posted on 2017-05-10 (3 Comments)
More of the same by Jer (2017-05-10 11:53:07)
Difficulty: 3 of 5Under The length of the belt (in Geometry)
Posted on 2017-05-09 (5 Comments)
Some Thoughts Raising the difficulty to 3. by Jer (2017-05-09 14:54:04)
No Subject by Jer (2017-05-09 14:45:18)
Difficulty: 3 of 5Under The smallest non-conformist (in Numbers)
Posted on 2017-05-02 (3 Comments)
Some Thoughts re: with computer assistance by Jer (2017-05-02 13:49:29)
Difficulty: 2 of 5Under A factorial in seconds (in Numbers)
Posted on 2017-04-18 (6 Comments)
Solution My solution by Jer (2017-04-18 15:15:18)
Difficulty: 3 of 5Under Pandigital and square (in Numbers)
Posted on 2017-04-15 (6 Comments)
re(3): Pencil and Paper solution (spoiler) by Jer (2017-04-16 18:18:39)
Difficulty: 2 of 5Under Sticks in a Cube (in Shapes)
Posted on 2017-04-11 (3 Comments)
Solution re(2): Solution by Jer (2017-04-14 11:29:12)
Solution Solution by Jer (2017-04-12 14:55:44)
Difficulty: 3 of 5Under Names in Boxes (in Logic)
Posted on 2017-04-09 (10 Comments)
re(2): Loops by Jer (2017-04-12 13:27:25)
Some Thoughts Thoughts by Jer (2017-04-10 15:31:03)
Difficulty: 4 of 5Under What is the value of "?" ? (in General)
Posted on 2017-04-06 (3 Comments)
Solution Solution? no spoiler by Jer (2017-04-06 15:42:37)
Difficulty: 2 of 5Under S.o.S is S (in Numbers)
Posted on 2017-04-03 (6 Comments)
Question Is this the answer (spoiler) or the trivial one (not)? by Jer (2017-04-03 14:38:54)
Difficulty: 3 of 5Under Power partition procedure (in Numbers)
Posted on 2017-03-26 (5 Comments)
Solution 3rd solution - elegance by Jer (2017-03-26 21:31:02)
Solution Another solution by Jer (2017-03-26 14:33:59)
Solution One solution by Jer (2017-03-26 14:26:21)
Difficulty: 4 of 5Under 1 is one of them (in Numbers)
Posted on 2017-03-25 (2 Comments)
re: computer solution / OEIS by Jer (2017-03-25 17:18:15)
Difficulty: 3 of 5Under True for nine and up (in Numbers)
Posted on 2017-03-24 (3 Comments)
Solution By hand by Jer (2017-03-24 12:39:01)
Difficulty: 2 of 5Under POPANASIS (in Word Problems)
Posted on 2017-03-23 (4 Comments)
re(2): Massive Search by Jer (2017-03-25 09:31:44)
Hints/Tips A hint by Jer (2017-03-24 08:29:20)
Difficulty: 3 of 5Under Up and up (in Numbers)
Posted on 2017-03-22 (2 Comments)
Solution Solution by Jer (2017-03-22 08:36:30)
Difficulty: 3 of 5Under Same side story (in Probability)
Posted on 2017-03-16 (5 Comments)
Solution Possible Solution by Jer (2017-03-16 09:17:28)
Difficulty: 3 of 5Under A Square Slab and a Cube (in Shapes)
Posted on 2017-03-12 (2 Comments)
Solution Pieces of the second part by Jer (2017-03-14 12:23:05)
Some Thoughts First part by Jer (2017-03-14 12:12:47)
Difficulty: 3 of 5Under Staircases in a Cube (in Shapes)
Posted on 2017-03-10 (1 Comments)
Some Thoughts Easiest CEs by Jer (2017-03-10 11:58:09)
Difficulty: 2 of 5Under Rectangle Point (in Geometry)
Posted on 2017-02-28 (1 Comments)
Solution Solution by Jer (2017-02-28 11:31:26)
Difficulty: 2 of 5Under Additional values (in Just Math)
Posted on 2017-01-22 (1 Comments)
Some Thoughts Partial solution based on rewording the problem by Jer (2017-01-23 10:26:10)
Difficulty: 3 of 5Under An interesting recurrence (in Numbers)
Posted on 2017-01-17 (5 Comments)
re: Why there are many solutions by Jer (2017-01-18 17:35:42)
Unreasonable by Jer (2017-01-17 10:48:55)
Difficulty: 3 of 5Under Squares sum up to a prime (in Just Math)
Posted on 2017-01-13 (4 Comments)
re: solution by Jer (2017-01-13 16:41:35)
Difficulty: 3 of 5Under 2nd grade math (in Probability)
Posted on 2017-01-12 (4 Comments)
re(2): solution -- so about that math test by Jer (2017-01-13 16:36:42)
Difficulty: 1 of 5Under Beginning of the Month (in Logic)
Posted on 2017-01-09 (2 Comments)
Solution by Jer (2017-01-09 13:41:41)
Difficulty: 2 of 5Under Proving divisibility (in Just Math)
Posted on 2017-01-08 (2 Comments)
Some Thoughts Prime indeed. by Jer (2017-01-08 16:13:31)
Difficulty: 2 of 5Under From Tangent to Circle (in Geometry)
Posted on 2017-01-04 (4 Comments)
Solution Alternate solution by Jer (2017-01-05 14:31:47)
Difficulty: 3 of 5Under One to rule them all. (in Sequences)
Posted on 2016-12-18 (3 Comments)
Some Thoughts Unproven formula by Jer (2016-12-18 12:39:53)
Difficulty: 3 of 5Under Pentagon Partitions (in Shapes)
Posted on 2016-12-11 (3 Comments)
Solution Symmetry preserving solution. by Jer (2016-12-13 10:24:57)
Difficulty: 4 of 5Under Vieta's derivatives (in Just Math)
Posted on 2016-12-02 (2 Comments)
Solution Calculator solution by Jer (2016-12-05 10:01:30)
Difficulty: 3 of 5Under Seven Hexominos and Two Triominos (in Shapes)
Posted on 2016-11-26 (1 Comments)
Hints/Tips Hints by Jer (2016-11-28 12:24:42)
Difficulty: 4 of 5Under Equal Areas on Circles (in Geometry)
Posted on 2016-11-19 (1 Comments)
Solution Analytic solution by Jer (2016-11-19 09:00:48)
Difficulty: 3 of 5Under Rational Resolution (in Just Math)
Posted on 2016-11-18 (2 Comments)
Solution Direct solution by Jer (2016-11-19 22:39:14)
Difficulty: 4 of 5Under AABBCC and Perfect Square (in Just Math)
Posted on 2016-11-09 (6 Comments)
better solution by Jer (2016-11-09 13:49:09)
Some Thoughts Possible solution by Jer (2016-11-09 13:19:24)
Difficulty: 3 of 5Under Lucas Digits Look (in Just Math)
Posted on 2016-11-07 (8 Comments)
Indirect computation by Jer (2016-11-07 09:25:13)
Difficulty: 3 of 5Under Covering a Rectangle with Hexominos (in Shapes)
Posted on 2016-11-05 (1 Comments)
Hints/Tips Hints by Jer (2016-11-07 09:34:17)
Difficulty: 4 of 5Under Hardest easy geometry problem (in Geometry)
Posted on 2016-11-04 (2 Comments)
Hint: auxiliary bits by Jer (2016-11-19 08:35:51)
Difficulty: 3 of 5Under Rectangle-Diagonal (in Geometry)
Posted on 2016-11-02 (1 Comments)
Solution by Jer (2016-11-02 14:26:28)
Difficulty: 3 of 5Under A peculiar triplet (in Just Math)
Posted on 2016-11-01 (7 Comments)
The triple without complete proof by Jer (2016-11-01 13:27:52)
Difficulty: 3 of 5Under The Ninth Hexomino (in Shapes)
Posted on 2016-10-28 (1 Comments)
Hints/Tips Hint (the ninth) by Jer (2016-10-29 16:34:02)
Difficulty: 3 of 5Under Totient Trial (in Just Math)
Posted on 2016-10-24 (2 Comments)
Solution My way by Jer (2016-10-24 13:39:57)
Difficulty: 3 of 5Under Ratio Resolution IV (in Weights and Scales)
Posted on 2016-10-20 (2 Comments)
Solution? by Jer (2016-10-20 11:31:39)
Difficulty: 3 of 5Under Prove Phi's Peculiar Property (in Numbers)
Posted on 2016-10-17 (3 Comments)
re: A different approach (spoiler) by Jer (2016-10-19 12:57:58)
Difficulty: 3 of 5Under No Fault Coverage 2 (in Shapes)
Posted on 2016-10-10 (1 Comments)
Hints/Tips Hint by Jer (2016-10-10 20:41:20)
Difficulty: 3 of 5Under Ratio Sum Equation (in Just Math)
Posted on 2016-10-09 (1 Comments)
Some thoughts and a few solutions by Jer (2016-10-09 16:59:52)
Difficulty: 3 of 5Under Nine Hexominos in a Square (in Shapes)
Posted on 2016-10-07 (2 Comments)
Question Request for hint by Jer (2016-10-09 17:06:22)
Difficulty: 3 of 5Under Covering a Square with Hexominos (in Shapes)
Posted on 2016-10-06 (1 Comments)
Hints/Tips Hint by Jer (2016-10-09 17:02:48)
Difficulty: 3 of 5Under Wrapping a Regular Hexagon (in Shapes)
Posted on 2016-10-05 (1 Comments)
First approximation by Jer (2016-10-05 13:31:13)
Difficulty: 3 of 5Under Rectangle Evasion (in Shapes)
Posted on 2016-09-29 (1 Comments)
Hints/Tips Hint by Jer (2016-09-30 17:19:49)
Difficulty: 3 of 5Under Carfax (in General)
Posted on 2016-09-29 (2 Comments)
posibilities by Jer (2016-09-29 09:53:22)
Difficulty: 3 of 5Under Unit Cube Paint Undertaking (in Shapes)
Posted on 2016-09-28 (6 Comments)
re: Considering all the possibilities by Jer (2016-09-29 07:27:30)
Difficulty: 4 of 5Under No data - just a weighing problem (in General)
Posted on 2016-09-27 (2 Comments)
My solution by Jer (2016-09-27 13:30:12)
Difficulty: 3 of 5Under Immobile Hexominos (in Shapes)
Posted on 2016-09-25 (1 Comments)
Hints/Tips Hint by Jer (2016-09-26 11:54:38)
Difficulty: 3 of 5Under Area search (in Geometry)
Posted on 2016-09-19 (2 Comments)
Solution Very simple solution by Jer (2016-09-19 13:18:20)
Difficulty: 3 of 5Under Eight Hexominos plus a Tetromino (in Shapes)
Posted on 2016-09-17 (2 Comments)
Some Thoughts Variants by Jer (2016-09-18 14:20:16)
Placement of tetromino Hint by Jer (2016-09-18 14:17:08)
Difficulty: 3 of 5Under Quadrilateral and Radius Query (in Shapes)
Posted on 2016-09-15 (1 Comments)
Some Thoughts hand waving answer by Jer (2016-09-18 18:00:34)
Difficulty: 3 of 5Under Sparse Packing a Zig-Zag (in Shapes)
Posted on 2016-09-11 (1 Comments)
Hints/Tips Hint by Jer (2016-09-11 13:33:07)
Difficulty: 3 of 5Under Lopsided T-Hexomino (in Shapes)
Posted on 2016-09-09 (2 Comments)
Question Request for a hint by Jer (2016-09-11 13:39:10)
Difficulty: 3 of 5Under Hexominos and Squares (in Shapes)
Posted on 2016-09-07 (1 Comments)
Hints/Tips Hint by Jer (2016-09-11 13:36:19)
Difficulty: 3 of 5Under Polygon Area Ponder (in Shapes)
Posted on 2016-09-01 (2 Comments)
Solution Solution by Jer (2016-09-01 13:25:49)
Difficulty: 3 of 5Under Ten L-Hexominos (in Shapes)
Posted on 2016-08-31 (3 Comments)
re(2): I'd like a hint by Jer (2016-09-02 16:48:16)
I'd like a hint by Jer (2016-09-01 20:23:45)
Difficulty: 3 of 5Under Random Chess Pieces Poser (in Probability)
Posted on 2016-08-29 (6 Comments)
re: computer aided solution by Jer (2016-08-29 21:23:12)
Difficulty: 3 of 5Under All rational numbers in (in Sequences)
Posted on 2016-08-26 (10 Comments)
re(2): From N/D to n @ jer & Charlie by Jer (2016-08-29 08:44:19)
From N/D to n by Jer (2016-08-28 17:09:33)
Difficulty: 3 of 5Under T-Hexomino Packing (in Shapes)
Posted on 2016-08-26 (1 Comments)
Part 1 only by Jer (2016-08-28 21:34:17)
Difficulty: 3 of 5Under Powers of 3 (in Numbers)
Posted on 2016-08-25 (5 Comments)
The only actual solution so far by Jer (2016-08-26 10:17:40)
re: Computer exploration by Jer (2016-08-25 21:27:27)
Difficulty: 2 of 5Under Labeling Minimum (in Weights and Scales)
Posted on 2016-08-25 (4 Comments)
re(2): Solution by Jer (2016-08-25 14:06:33)
Solution Solution by Jer (2016-08-25 10:19:08)
Difficulty: 2 of 5Under Business is business (in Word Problems)
Posted on 2016-08-24 (6 Comments)
Hints/Tips Hint for previous solvers. by Jer (2016-08-24 09:37:02)
Difficulty: 3 of 5Under Year from Ratio (in General)
Posted on 2016-08-22 (3 Comments)
Solution Solution by Jer (2016-08-22 12:48:50)
Difficulty: 2 of 5Under Estimate a percentage (in Numbers)
Posted on 2016-08-22 (3 Comments)
A simple upperbound by Jer (2016-08-22 11:06:05)
Difficulty: 3 of 5Under Covering a Cube with Strips (in Shapes)
Posted on 2016-08-18 (3 Comments)
Some Thoughts Solution to Part 1. Thoughts on part 2. Extensions. by Jer (2016-08-18 17:09:11)
Difficulty: 1 of 5Under Square angles (in Shapes)
Posted on 2016-08-02 (1 Comments)
Solution D1? Full solution. by Jer (2016-08-02 12:22:10)
Difficulty: 2 of 5Under Weight Limited Bridge (in General)
Posted on 2016-08-01 (6 Comments)
Solution re(2): answer - spoiler by Jer (2016-08-01 21:37:50)
Difficulty: 4 of 5Under Mirror multiplication (in Numbers)
Posted on 2016-07-31 (8 Comments)
Some Thoughts Some algebra by Jer (2016-07-31 20:59:54)
Difficulty: 3 of 5Under Square in a Cone (in Shapes)
Posted on 2016-07-29 (2 Comments)
Solution Can this be all? by Jer (2016-07-29 14:13:27)
Difficulty: 2 of 5Under A Tetrahedral Volume Puzzle (in Shapes)
Posted on 2016-07-28 (1 Comments)
Solution Possible solution by Jer (2016-07-28 10:30:10)
Difficulty: 3 of 5Under A surprising prime gap (in Numbers)
Posted on 2016-07-27 (8 Comments)
re(4): My solution by Jer (2016-07-31 21:45:02)
My solution by Jer (2016-07-27 18:05:19)
Difficulty: 3 of 5Under 15 Triominoes (in Shapes)
Posted on 2016-07-26 (4 Comments)
re(2): Harder case by Jer (2016-07-27 21:31:41)
Harder case by Jer (2016-07-27 08:58:07)
Difficulty: 2 of 5Under Go back or double (in Sequences)
Posted on 2016-07-25 (5 Comments)
re: part 1 by Jer (2016-07-25 11:30:11)
Difficulty: 3 of 5Under Table Partition Trial (in Shapes)
Posted on 2016-07-24 (3 Comments)
Some Thoughts re: 10/11 of the other pentominoes by Jer (2016-07-24 14:14:49)
Solution D1 argument by Jer (2016-07-24 12:10:20)
Difficulty: 3 of 5Under Triangle Area and Integer Finding (in Shapes)
Posted on 2016-07-23 (2 Comments)
Solution Full solution by Jer (2016-07-26 11:39:54)
Difficulty: 3 of 5Under Seventh Term Settlement (in Sequences)
Posted on 2016-07-22 (10 Comments)
Some Thoughts Is an algebraic solution likely by Jer (2016-07-22 11:16:48)
Difficulty: 2 of 5Under Two items to get sqrt of 2 (in Science)
Posted on 2016-07-19 (5 Comments)
re(2): another way(s) by Jer (2016-07-26 09:49:15)
Solution Shoes land on their feet. A solution. by Jer (2016-07-19 10:28:08)
Difficulty: 3 of 5Under The First Repeat (in Probability)
Posted on 2016-07-18 (5 Comments)
re: solution by Jer (2016-07-18 21:13:16)
Difficulty: 3 of 5Under Equilateral Exercise (in Shapes)
Posted on 2016-07-15 (1 Comments)
Solution Solution by Jer (2016-07-15 17:40:35)
Difficulty: 4 of 5Under Restricted Five Coin Sort (in Weights and Scales)
Posted on 2016-07-14 (1 Comments)
Solution Solution by Jer (2016-07-14 13:47:58)
Difficulty: 2 of 5Under Prove SG's theorem (in Just Math)
Posted on 2016-07-12 (3 Comments)
Solution and related result by Jer (2016-07-13 10:20:51)
Difficulty: 3 of 5Under Two Digit Diameter Trial (in Shapes)
Posted on 2016-07-11 (2 Comments)
Solution analytic solution by Jer (2016-07-11 17:24:07)
Difficulty: 3 of 5Under Multiple Harshad Numbers (in Numbers)
Posted on 2016-07-10 (12 Comments)
re: Moby Dick has been captured -- part 2 solved by Jer (2016-07-14 13:55:58)
Difficulty: 3 of 5Under Sum Reals, Get Integer (in Just Math)
Posted on 2016-07-09 (3 Comments)
Some Thoughts re: Solution by Jer (2016-07-09 13:50:28)
Difficulty: 3 of 5Under Circle Cover Conclusion (in Shapes)
Posted on 2016-07-07 (2 Comments)
Solution Interpretation 2: Overlap by Jer (2016-07-07 14:13:26)
Solution Interpretation 1: Non-overlap by Jer (2016-07-07 13:23:56)
Difficulty: 3 of 5Under Quadrilateral Area Query 2 (in Shapes)
Posted on 2016-07-03 (3 Comments)
Some Thoughts On side order by Jer (2016-07-03 22:10:49)
Difficulty: 3 of 5Under 4 numbers make 5 squares (in Numbers)
Posted on 2016-06-30 (10 Comments)
re: A (bad?) guess by Jer (2016-07-01 11:11:57)
re: computer solution and discussion by Jer (2016-06-30 16:42:25)
Difficulty: 1 of 5Under Simple number trick (in Numbers)
Posted on 2016-06-29 (5 Comments)
re: Likely answer by Jer (2016-06-30 09:08:26)
re: comment by Jer (2016-06-29 10:45:33)
Difficulty: 3 of 5Under Covering a Square (in Shapes)
Posted on 2016-06-24 (2 Comments)
re: One arrangment by Jer (2016-06-24 12:11:28)
Difficulty: 3 of 5Under Find From Four 2 (in Just Math)
Posted on 2016-06-23 (4 Comments)
long way complete solution by Jer (2016-06-23 21:17:49)
Difficulty: 3 of 5Under Three Integer Root Sum (in Just Math)
Posted on 2016-06-22 (2 Comments)
Solution Alternate solution by Jer (2016-06-22 13:37:44)
Difficulty: 3 of 5Under Three vowels (in Word Problems)
Posted on 2016-06-21 (4 Comments)
Some Thoughts List of countries by Jer (2016-06-21 12:37:06)
Difficulty: 3 of 5Under Go for the midpoint (in Geometry)
Posted on 2016-06-18 (3 Comments)
Solution Slightly different Solution by Jer (2016-06-18 17:02:59)
Difficulty: 2 of 5Under Comparing two events (in Probability)
Posted on 2016-06-15 (3 Comments)
Solution solution by Jer (2016-06-16 09:42:03)
Difficulty: 3 of 5Under Arithmetic Product Puzzle 2 (in Sequences)
Posted on 2016-06-14 (2 Comments)
Some Thoughts Suspicion of solution by Jer (2016-06-14 09:53:19)
Difficulty: 3 of 5Under Duodecimal Digit Product and Number Puzzle (in Just Math)
Posted on 2016-06-12 (2 Comments)
Solution Solution by Jer (2016-06-12 17:51:42)
Difficulty: 3 of 5Under Isosceles Leg Length (in Shapes)
Posted on 2016-06-09 (6 Comments)
Some Thoughts The issue by Jer (2016-06-11 12:11:39)
Solution 3 Solutions to an impossible task by Jer (2016-06-11 12:06:08)
Difficulty: 3 of 5Under Random chord problem 2 (in Probability)
Posted on 2016-06-09 (1 Comments)
Solution Solution by Jer (2016-06-09 14:19:55)
Difficulty: 3 of 5Under Twice 2 products (in Numbers)
Posted on 2016-06-07 (2 Comments)
Solution Exhausted Spoiler by Jer (2016-06-07 11:33:35)
Difficulty: 3 of 5Under Edge problem (in Geometry)
Posted on 2016-05-31 (3 Comments)
Solution solution and alternate by Jer (2016-05-31 13:22:04)
Difficulty: 2 of 5Under Log Expression Exercise (in Just Math)
Posted on 2016-05-30 (1 Comments)
Solution by Jer (2016-05-30 08:41:29)
Difficulty: 3 of 5Under Digit Sum Equation Puzzle (in Just Math)
Posted on 2016-05-28 (5 Comments)
Solution A more full solution. by Jer (2016-05-28 19:20:35)
Possible solution by Jer (2016-05-28 14:24:16)
Difficulty: 4 of 5Under Power of 2 (in Numbers)
Posted on 2016-05-27 (6 Comments)
re: computer solution by Jer (2016-05-27 16:42:04)
Some Thoughts What I can find by Jer (2016-05-27 11:40:18)
Difficulty: 3 of 5Under Mark's itinerary (in Probability)
Posted on 2016-05-26 (5 Comments)
re(2): An by Jer (2016-05-29 21:05:33)
Solution An "I've not learned of Mr. O.V." Solution by Jer (2016-05-28 22:19:25)
Difficulty: 3 of 5Under Duodecimal Element Sum Settlement (in Just Math)
Posted on 2016-05-25 (3 Comments)
re: working in decimal, same answer by Jer (2016-05-25 20:20:09)
Solution Solution (assuming I kept my bases straight) by Jer (2016-05-25 13:14:55)
Difficulty: 3 of 5Under Laugh, USA (in General)
Posted on 2016-05-24 (2 Comments)
Some options from my commonwealth by Jer (2016-05-24 13:39:23)
Difficulty: 3 of 5Under Projection Ponder (in Shapes)
Posted on 2016-05-23 (2 Comments)
re: solution / generalization by Jer (2016-05-24 07:25:27)
Difficulty: 2 of 5Under 3 integers (in Just Math)
Posted on 2016-05-23 (2 Comments)
Remarks by Jer (2016-05-23 09:51:05)
Solutions only by Jer (2016-05-23 09:28:28)
Difficulty: 4 of 5Under Gambler's policy (in Probability)
Posted on 2016-05-20 (2 Comments)
re: computer assisted solution / coolness by Jer (2016-05-20 21:46:01)
Difficulty: 3 of 5Under A direct count (in Famous Riddles)
Posted on 2016-05-19 (4 Comments)
Hints/Tips Hint by Jer (2016-05-19 11:18:01)
Difficulty: 3 of 5Under Rocking moves (in Logic)
Posted on 2016-05-17 (3 Comments)
re(2): Solution by Jer (2016-05-19 07:19:50)
Difficulty: 1 of 5Under A cube with missing row (in Numbers)
Posted on 2016-05-16 (1 Comments)
Some Thoughts What are you asking for? (Possible spoiler) by Jer (2016-05-16 09:19:28)
Difficulty: 3 of 5Under Cubic and Quadratic Determination (in Just Math)
Posted on 2016-05-14 (3 Comments)
re: Possible solution by Jer (2016-05-14 14:45:28)
Difficulty: 4 of 5Under From challenge to change (in Word Problems)
Posted on 2016-05-12 (4 Comments)
Solution Spoiler by Jer (2016-05-12 14:19:40)
Difficulty: 3 of 5Under Terrific sequence (in Sequences)
Posted on 2016-05-10 (6 Comments)
re: A hint by Jer (2016-05-16 09:26:01)
Difficulty: 2 of 5Under Puzzle Calendar (in General)
Posted on 2016-05-09 (5 Comments)
Some Thoughts Solution by Jer (2016-05-09 21:15:20)
Difficulty: 3 of 5Under Hexagon Hinder 2 (in Shapes)
Posted on 2016-05-06 (2 Comments)
Some Thoughts Observation by Jer (2016-05-07 21:35:32)
Difficulty: 1 of 5Under Create this string (in Numbers)
Posted on 2016-05-04 (6 Comments)
Question re(2): Solution by Jer (2016-05-04 21:07:23)
Difficulty: 1 of 5Under Is it true? (in Just Math)
Posted on 2016-05-02 (2 Comments)
Solution Solution by formulas by Jer (2016-05-02 09:19:38)
Difficulty: 3 of 5Under Four From Arithmetic and Geometric (in Sequences)
Posted on 2016-04-29 (3 Comments)
All solutions (spoiler) by Jer (2016-04-29 12:15:45)
Difficulty: 3 of 5Under Much of few is many (in Numbers)
Posted on 2016-04-28 (2 Comments)
Solution Full solution by Jer (2016-04-28 11:59:32)
Difficulty: 3 of 5Under M.G.'s wit (in Just Math)
Posted on 2016-04-27 (3 Comments)
Solution Working backwards. Spoiler. by Jer (2016-04-27 13:14:08)
Difficulty: 1 of 5Under TO and FRO (in Just Math)
Posted on 2016-04-25 (4 Comments)
Solution Process in my head by Jer (2016-04-25 17:57:51)
Difficulty: 3 of 5Under Cubic Diophantine Conclusion (in Just Math)
Posted on 2016-04-22 (9 Comments)
re(4): Start by Jer (2016-04-24 15:00:55)
Difficulty: 3 of 5Under An educated guess (in Probability)
Posted on 2016-04-18 (7 Comments)
Some Thoughts re(2): Preliminary guess / my guess by Jer (2016-04-18 11:29:06)
Difficulty: 3 of 5Under Rectangular Crease Resolution (in Shapes)
Posted on 2016-04-15 (2 Comments)
Solution Quick solution by Jer (2016-04-15 11:52:20)
Difficulty: 3 of 5Under Proof requested (in Geometry)
Posted on 2016-04-14 (3 Comments)
Solution simplified geometric proof by Jer (2016-04-15 13:59:05)
Solution Analytical solution by Jer (2016-04-15 13:45:37)
Difficulty: 3 of 5Under 1 to 9 concatenation (in Numbers)
Posted on 2016-04-12 (7 Comments)
re: computer solution by Jer (2016-04-13 07:21:29)
re: Analytic Answer by Jer (2016-04-12 14:11:58)
Solution Listing all n's lead to an interesting observation by Jer (2016-04-12 14:03:44)
Difficulty: 2 of 5Under Extreme Palindrome Exercise (in Just Math)
Posted on 2016-04-11 (3 Comments)
Solution Analytic solution by Jer (2016-04-11 09:29:48)
Difficulty: 3 of 5Under Quadrilateral Area Query (in Shapes)
Posted on 2016-04-10 (2 Comments)
Solution Long Solution by Jer (2016-04-10 16:42:22)
Difficulty: 3 of 5Under Square Settlement With Digits (in Just Math)
Posted on 2016-04-07 (2 Comments)
Solution Ten solutions by Jer (2016-04-07 14:02:58)
Difficulty: 2 of 5Under Circle Line Length (in Shapes)
Posted on 2016-04-07 (2 Comments)
Solution Solution by Jer (2016-04-08 11:37:32)
Difficulty: 3 of 5Under Complex Number Query (in Just Math)
Posted on 2016-04-03 (1 Comments)
Solution Solution (probably the hard way) by Jer (2016-04-03 20:19:34)
Difficulty: 3 of 5Under Nonconstant Product (in Just Math)
Posted on 2016-04-02 (3 Comments)
re: Solution - correction by Jer (2016-04-03 20:37:25)
Difficulty: 2 of 5Under Tatami Tiling (in Shapes)
Posted on 2016-03-29 (2 Comments)
Solution A different solution. by Jer (2016-03-29 19:23:21)
Difficulty: 3 of 5Under Star-shaped polyominos (in Shapes)
Posted on 2016-03-28 (7 Comments)
re(3): Solution Part A by Jer (2016-03-28 19:57:28)
re: Solution Part A by Jer (2016-03-28 16:55:49)
Difficulty: 3 of 5Under Sum from Arithmetic and Geometric (in Sequences)
Posted on 2016-03-24 (5 Comments)
Solution Possible Solution by Jer (2016-03-24 13:22:49)
Difficulty: 3 of 5Under Double Reflection (in Geometry)
Posted on 2016-03-24 (2 Comments)
Solution Alternate solution by Jer (2016-03-24 10:53:44)
Difficulty: 2 of 5Under Neighbors or not? (in Probability)
Posted on 2016-03-22 (3 Comments)
re: Solution by Jer (2016-03-23 09:53:18)
Difficulty: 3 of 5Under Insert Zero (in Numbers)
Posted on 2016-03-21 (5 Comments)
re: Solution by Jer (2016-03-21 17:27:26)
Solution Solution by Jer (2016-03-21 12:30:42)
Difficulty: 3 of 5Under Rational Value Validation (in Just Math)
Posted on 2016-03-20 (11 Comments)
re: cardinality of solution set by Jer (2016-03-21 09:54:59)
Difficulty: 2 of 5Under Find number and base (in Numbers)
Posted on 2016-03-17 (6 Comments)
re: solution by Jer (2016-03-17 11:10:59)
Difficulty: 4 of 5Under To-day is Monday & a PIday (in Numbers)
Posted on 2016-03-14 (13 Comments)
re: No Subject by Jer (2016-03-15 13:45:13)
re(3): My best @ jer and CH by Jer (2016-03-15 09:38:52)
My best by Jer (2016-03-14 18:01:56)
Difficulty: 2 of 5Under Form 21 n Times (in Numbers)
Posted on 2016-03-11 (2 Comments)
Solution Solution spoiler by Jer (2016-03-11 11:02:42)
Difficulty: 3 of 5Under Rectangles and U Pentominos (in Shapes)
Posted on 2016-03-08 (4 Comments)
re: posible solution 2 by Jer (2016-03-09 18:05:13)
Possible solution. by Jer (2016-03-09 09:44:32)
Difficulty: 1 of 5Under d1 or more ? (in Numbers)
Posted on 2016-03-07 (4 Comments)
Solution Why I'm with Ady by Jer (2016-03-07 10:47:25)
Difficulty: 3 of 5Under Sum Root Value (in Just Math)
Posted on 2016-03-05 (2 Comments)
Some Thoughts Some thoughts by Jer (2016-03-05 12:02:16)
Difficulty: 3 of 5Under Four P Pentominoes (in Shapes)
Posted on 2016-03-04 (4 Comments)
Solution Solutions by Jer (2016-03-04 11:56:12)
Difficulty: 3 of 5Under Three Ways to Put a Square in a Triangle (in Shapes)
Posted on 2016-02-26 (8 Comments)
re(2): My solution by Jer (2016-02-27 22:35:46)
Solution My solution by Jer (2016-02-27 12:46:15)
Difficulty: 3 of 5Under Geometric and Three Power Travail (in Sequences)
Posted on 2016-02-22 (2 Comments)
Solution solution by Jer (2016-02-22 11:03:46)
Difficulty: 3 of 5Under Perimeter from Double-cones (in Shapes)
Posted on 2016-02-20 (3 Comments)
re(2): Solution by Jer (2016-02-24 12:29:36)
Solution Solution by Jer (2016-02-23 11:06:29)
Difficulty: 4 of 5Under Matching Isosceles and Right Triangle (in Geometry)
Posted on 2016-02-19 (7 Comments)
re: An idea by Jer (2016-02-21 22:13:27)
An idea by Jer (2016-02-20 16:18:39)
Difficulty: 2 of 5Under Counting Ten Segment Paths (in General)
Posted on 2016-02-19 (6 Comments)
Some Thoughts As many as I found by Jer (2016-02-19 11:03:32)
Difficulty: 3 of 5Under Area From Even Floor (in Just Math)
Posted on 2016-02-15 (2 Comments)
Solution Solution by Jer (2016-02-15 12:30:34)
Difficulty: 3 of 5Under Big difference (in Numbers)
Posted on 2016-02-14 (4 Comments)
re: computer solutions by Jer (2016-02-14 15:30:09)
Difficulty: 3 of 5Under Hexagon Hinder (in Shapes)
Posted on 2016-02-12 (2 Comments)
Some Thoughts General solution by Jer (2016-02-12 09:16:19)
Solution Simple solution by Jer (2016-02-12 09:02:01)
Difficulty: 2 of 5Under Boxes galore (in Numbers)
Posted on 2016-02-11 (2 Comments)
Solution Possible solution by Jer (2016-02-11 09:20:44)
Difficulty: 4 of 5Under Optimal Order (in Sequences)
Posted on 2016-02-10 (5 Comments)
re(2): This should work by Jer (2016-02-14 11:48:59)
re: This should work by Jer (2016-02-13 21:26:34)
Solution This should work by Jer (2016-02-11 11:56:25)
Difficulty: 2 of 5Under Two Square Settlement (in Shapes)
Posted on 2016-02-09 (1 Comments)
Solution Solution by Jer (2016-02-10 11:58:01)
Difficulty: 2 of 5Under Interesting representation (in Numbers)
Posted on 2016-02-08 (6 Comments)
re(2): Non-answer by Jer (2016-02-08 20:08:53)
Some Thoughts Non-answer by Jer (2016-02-08 15:42:16)
Difficulty: 3 of 5Under Coefficient From Roots (in Just Math)
Posted on 2016-02-07 (2 Comments)
Solution Solution - the hard way by Jer (2016-02-07 16:12:32)
Difficulty: 3 of 5Under a version of NIM (in Games)
Posted on 2016-02-04 (3 Comments)
Some Thoughts Mapping out a bit by Jer (2016-02-04 20:20:26)
Difficulty: 1 of 5Under Word Grid (in Word Problems)
Posted on 2016-02-04 (6 Comments)
re(2): partial spoiler. by Jer (2016-02-04 17:12:55)
Difficulty: 3 of 5Under Dascal triangle (in Numbers)
Posted on 2016-02-02 (8 Comments)
re(4): computer solution by Jer (2016-02-04 07:24:10)
re: computer solution by Jer (2016-02-03 11:14:00)
Difficulty: 3 of 5Under Erase the right 90 (in Numbers)
Posted on 2016-01-28 (5 Comments)
Some Thoughts Sequence? by Jer (2016-01-29 07:26:40)
Difficulty: 3 of 5Under Last term zero (in Sequences)
Posted on 2016-01-28 (3 Comments)
Solution Spoiler by Jer (2016-01-28 09:34:50)
Difficulty: 3 of 5Under Integer Illation From Divisors (in Just Math)
Posted on 2016-01-27 (2 Comments)
Solution Solution by Jer (2016-01-27 10:18:51)
Difficulty: 2 of 5Under Evaluate probabilities (in Probability)
Posted on 2016-01-26 (3 Comments)
Solution re: Counting, Counting (spoiler) - decimals by Jer (2016-01-26 10:27:10)
Difficulty: 3 of 5Under Three Jar Trial (in Weights and Scales)
Posted on 2016-01-25 (4 Comments)
Concise solution by Jer (2016-01-26 07:31:10)
Difficulty: 3 of 5Under Find the next two numbers (in Sequences)
Posted on 2016-01-21 (4 Comments)
Answer, no spoiler by Jer (2016-01-21 07:51:59)
Difficulty: 3 of 5Under Three Power Verification (in Just Math)
Posted on 2016-01-20 (4 Comments)
re: Solution by Jer (2016-01-21 07:49:36)
Difficulty: 4 of 5Under Detect my chosen coin (in Games)
Posted on 2016-01-19 (19 Comments)
Some ideas by Jer (2016-01-20 08:21:47)
Difficulty: 3 of 5Under 9 coins prob (in Weights and Scales)
Posted on 2016-01-18 (6 Comments)
Solution A solution by Jer (2016-01-18 12:17:21)
Difficulty: 3 of 5Under 6 coins (in Weights and Scales)
Posted on 2016-01-13 (10 Comments)
re: Solution / counterexample by Jer (2016-01-13 12:21:16)
Difficulty: 2 of 5Under Four balloons (in Just Math)
Posted on 2016-01-12 (4 Comments)
re: Solution / efficiency challenge by Jer (2016-01-14 10:40:32)
Solution Solution by Jer (2016-01-12 10:45:41)
Difficulty: 4 of 5Under Primevens and primeodds (in Numbers)
Posted on 2016-01-10 (8 Comments)
re(2): some stats extended by Jer (2016-01-10 20:18:57)
Difficulty: 3 of 5Under Tan Settlement (in Shapes)
Posted on 2016-01-09 (3 Comments)
Some Thoughts A false start and an approximation by Jer (2016-01-10 20:07:19)
Difficulty: 4 of 5Under Lost in the woods (in Just Math)
Posted on 2016-01-08 (12 Comments)
About the problem by Jer (2016-01-10 12:06:23)
re: Graphic? by Jer (2016-01-10 11:32:00)
Not there yet. by Jer (2016-01-09 23:25:15)
re: proposed solution by Jer (2016-01-08 21:52:48)
Difficulty: 2 of 5Under A math symbol (in Numbers)
Posted on 2016-01-08 (10 Comments)
re: The 3rd one by Jer (2016-01-08 21:49:54)
Some Thoughts More perhaps by Jer (2016-01-08 09:13:07)
Difficulty: 3 of 5Under Pumpkins 5 (in Weights and Scales)
Posted on 2016-01-06 (2 Comments)
Solution Solution by Jer (2016-01-06 11:14:20)
Difficulty: 3 of 5Under Test #9 (in Word Problems)
Posted on 2016-01-05 (3 Comments)
Solution Rem3 was right by Jer (2016-01-05 10:21:29)
Difficulty: 2 of 5Under One out of Five (in Weights and Scales)
Posted on 2016-01-04 (2 Comments)
Solution Solution by Jer (2016-01-04 10:10:44)
Difficulty: 3 of 5Under Floor and Square Division Settlement (in Just Math)
Posted on 2016-01-01 (4 Comments)
re(2): answer by Jer (2016-01-02 12:23:49)
Difficulty: 4 of 5Under Peaceful superqueens (in General)
Posted on 2015-12-31 (2 Comments)
Some Thoughts five-by-five by Jer (2015-12-31 14:59:20)
Difficulty: 3 of 5Under Monotonous integers (in Numbers)
Posted on 2015-12-30 (9 Comments)
different answer by Jer (2015-12-30 12:57:55)
Difficulty: 3 of 5Under One of Sixteen (in Weights and Scales)
Posted on 2015-12-29 (12 Comments)
re(3): Short solution. by Jer (2016-01-12 10:20:32)
re: Short solution. by Jer (2016-01-11 12:30:33)
Difficulty: 2 of 5Under Equiangular Hexagon Query (in Shapes)
Posted on 2015-12-29 (1 Comments)
Solution Solution and comment by Jer (2015-12-30 11:40:30)
Difficulty: 3 of 5Under Triangle Area Ascertainment (in Shapes)
Posted on 2015-12-26 (2 Comments)
Ideas that didn't work and then GSP solution by Jer (2015-12-27 21:34:28)
Difficulty: 2 of 5Under Run away (in Games)
Posted on 2015-12-22 (3 Comments)
re(2): Solution by Jer (2015-12-23 13:20:20)
Solution Solution by Jer (2015-12-22 09:37:22)
Difficulty: 3 of 5Under Quadratic and Five Variable Query (in Just Math)
Posted on 2015-12-20 (2 Comments)
Some Thoughts simple solutions by Jer (2015-12-20 15:48:24)
Difficulty: 3 of 5Under ABCD Grid (in Logic)
Posted on 2015-12-16 (1 Comments)
Solution Detailed Solution by Jer (2015-12-20 12:19:11)
Difficulty: 2 of 5Under Protecting the fleet Parts A. & B. (in Geometry)
Posted on 2015-12-14 (4 Comments)
re: solutions by Jer (2015-12-14 16:56:41)
Difficulty: 3 of 5Under Complex Equation Conclusion (in Just Math)
Posted on 2015-12-12 (3 Comments)
Solution Solution by Jer (2015-12-14 11:07:40)
Difficulty: 2 of 5Under Using a standard deck (in Numbers)
Posted on 2015-12-11 (2 Comments)
Solution Solution by Jer (2015-12-11 12:57:28)
Difficulty: 3 of 5Under A peculiar triangular number (in Numbers)
Posted on 2015-12-10 (2 Comments)
Solution By OEIS by Jer (2015-12-11 13:22:25)
Difficulty: 3 of 5Under A special short-list (in Numbers)
Posted on 2015-12-08 (3 Comments)
Solution Analytical solution by Jer (2015-12-08 11:25:09)
Difficulty: 3 of 5Under Reversible hours (in Shapes)
Posted on 2015-12-07 (4 Comments)
re(2): Colon included / no cheating by Jer (2015-12-09 11:34:46)
Colon included by Jer (2015-12-07 16:14:42)
Difficulty: 3 of 5Under Cos Case Concern (in Shapes)
Posted on 2015-12-06 (4 Comments)
re(2): Two solutions by Jer (2015-12-06 20:04:43)
Solution Two solutions by Jer (2015-12-06 12:55:48)
Difficulty: 3 of 5Under Two Power Equation Poser (in Just Math)
Posted on 2015-12-05 (1 Comments)
Solution Solution by Jer (2015-12-06 17:29:16)
Difficulty: 2 of 5Under List of pairs (in Just Math)
Posted on 2015-12-04 (2 Comments)
re: computer solution -- first eight pairs by Jer (2015-12-04 12:50:00)
Difficulty: 2 of 5Under Variety of divisors (in Numbers)
Posted on 2015-12-03 (3 Comments)
re(2): solution by Jer (2015-12-03 12:02:35)
Difficulty: 3 of 5Under Get the right product (in Just Math)
Posted on 2015-12-01 (5 Comments)
re: Different solution (dumb error) by Jer (2015-12-02 14:05:17)
Solution Different solution by Jer (2015-12-02 07:18:54)
Difficulty: 3 of 5Under Increasing sequences (in Just Math)
Posted on 2015-11-30 (3 Comments)
re: How about...? by Jer (2015-12-02 10:54:33)
Difficulty: 2 of 5Under No primes here (in Sequences)
Posted on 2015-11-30 (2 Comments)
Solution Solution and thought process. by Jer (2015-11-30 16:58:09)
Difficulty: 3 of 5Under Coin contest (in Games)
Posted on 2015-11-27 (5 Comments)
re: 3 coins, 4 coins, and a question by Jer (2015-11-27 23:02:14)
Simple case by Jer (2015-11-27 16:19:13)
Difficulty: 3 of 5Under Pair and Power Poser (in Just Math)
Posted on 2015-11-26 (1 Comments)
Solutions by graphing by Jer (2015-11-27 16:01:12)
Difficulty: 3 of 5Under Square in a notched square (in Geometry)
Posted on 2015-11-25 (3 Comments)
re: A thought (spoiler) by Jer (2015-11-27 15:44:34)
Difficulty: 3 of 5Under Biggest and smallest (in Just Math)
Posted on 2015-11-24 (2 Comments)
re: computer solution by Jer (2015-11-24 11:05:37)
Difficulty: 3 of 5Under Complex Number and Power Puzzle (in Just Math)
Posted on 2015-11-23 (1 Comments)
Solution Solution by Jer (2015-11-26 09:51:41)
Difficulty: 2 of 5Under AINS (in Word Problems)
Posted on 2015-11-23 (3 Comments)
One possibility by Jer (2015-11-23 08:33:49)
Difficulty: 3 of 5Under Summing Consecutive Terms and Pair Determination (in Sequences)
Posted on 2015-11-21 (3 Comments)
Solution Slight variant solution by Jer (2015-11-21 12:48:22)
Difficulty: 3 of 5Under Generalizing II (in Sequences)
Posted on 2015-11-20 (2 Comments)
Solution another way to calculate by Jer (2015-11-20 15:37:41)
Difficulty: 4 of 5Under Optimizing Potency (in Algorithms)
Posted on 2015-11-19 (10 Comments)
re: Triangular numbers and Pascal's Triangle (spoiler) by Jer (2015-11-26 22:26:07)
Solution I think I got it. by Jer (2015-11-20 15:32:57)
Possible improvement by Jer (2015-11-20 14:12:58)
Difficulty: 2 of 5Under Sum of powers (in Numbers)
Posted on 2015-11-18 (3 Comments)
Solution Solution by Jer (2015-11-18 08:33:17)
Difficulty: 3 of 5Under Irrational Decision (in Just Math)
Posted on 2015-11-15 (6 Comments)
re(2): N=2 only by Jer (2015-11-16 20:48:21)
Some Thoughts N=2 only by Jer (2015-11-16 07:26:45)
Difficulty: 2 of 5Under Tiling and counting (in Numbers)
Posted on 2015-11-10 (2 Comments)
Solution Solution and my story. by Jer (2015-11-10 13:37:39)
Difficulty: 3 of 5Under Complex Number Puzzle (in Just Math)
Posted on 2015-11-08 (2 Comments)
Solution A more confident answer by Jer (2015-11-09 14:11:51)
Some Thoughts Maybe I got it (possible spoiler) by Jer (2015-11-08 11:26:25)
Difficulty: 3 of 5Under 10 4 7 10 (in Just Math)
Posted on 2015-11-03 (2 Comments)
Some Thoughts A few by Jer (2015-11-03 14:24:44)
Difficulty: 2 of 5Under Two and only two (in Just Math)
Posted on 2015-11-03 (4 Comments)
re(2): a quick look by Jer (2015-11-04 07:42:01)
re: a quick look by Jer (2015-11-03 13:03:45)
Difficulty: 3 of 5Under Prediction (in Tricks)
Posted on 2015-11-02 (2 Comments)
Solution Solution and a follow-up by Jer (2015-11-02 13:12:58)
Difficulty: 3 of 5Under Term Sum Settlement (in Sequences)
Posted on 2015-10-29 (3 Comments)
Solution Algebraic solution by Jer (2015-10-29 16:31:34)
Difficulty: 2 of 5Under Some questions of abundance (in Just Math)
Posted on 2015-10-28 (3 Comments)
re: proposed solution / counterexample by Jer (2015-10-28 11:14:06)
Difficulty: 2 of 5Under Factorizable Expressions (in Just Math)
Posted on 2015-10-21 (3 Comments)
Solution re: The whole story? More. by Jer (2015-10-22 07:21:33)
Solution The whole story? by Jer (2015-10-21 20:22:38)
Difficulty: 3 of 5Under n-digit ... n-th power (in Numbers)
Posted on 2015-10-20 (2 Comments)
Solution Non-counting solution by Jer (2015-10-20 13:42:48)
Difficulty: 3 of 5Under Fly's schedule (in Just Math)
Posted on 2015-10-15 (1 Comments)
Solution frozen flies don't spoil (spoiler) by Jer (2015-10-15 09:12:14)
Difficulty: 3 of 5Under Coefficient Determination (in Just Math)
Posted on 2015-10-14 (1 Comments)
Solution Possible solution by Jer (2015-10-14 13:02:39)
Difficulty: 3 of 5Under Function Existence Exercise (in Just Math)
Posted on 2015-10-11 (4 Comments)
re(2): Almost there? by Jer (2015-10-14 10:07:48)
Some Thoughts Almost there? by Jer (2015-10-13 14:01:28)
Difficulty: 3 of 5Under Expression and Perfect Square (in Just Math)
Posted on 2015-10-10 (2 Comments)
Some Thoughts Thoughts by Jer (2015-10-11 09:43:26)
Difficulty: 3 of 5Under sum of digits and 100th term (in Sequences)
Posted on 2015-10-08 (3 Comments)
re: I've probably miscounted but here goes. by Jer (2015-10-09 08:16:30)
Difficulty: 3 of 5Under Digit sum and digit product equality (in Just Math)
Posted on 2015-10-06 (2 Comments)
Links by Jer (2015-10-07 07:30:21)
Difficulty: 3 of 5Under Probability of constant leading (in Probability)
Posted on 2015-10-05 (5 Comments)
re(2): Formula with partial proof by Jer (2015-10-06 12:58:38)
Some Thoughts Formula with partial proof by Jer (2015-10-06 08:15:19)
Difficulty: 3 of 5Under Positive Integer Pair and Division Puzzle (in Just Math)
Posted on 2015-10-03 (1 Comments)
partial solution by Jer (2015-10-05 14:02:47)
Difficulty: 3 of 5Under All are... (in Word Problems)
Posted on 2015-10-02 (4 Comments)
re(2): Spoiler by Jer (2015-10-05 13:25:32)
Difficulty: 3 of 5Under Permutations count (in Numbers)
Posted on 2015-10-01 (10 Comments)
My misleading subject line. by Jer (2015-10-02 13:38:33)
Solution Simpler solution by Jer (2015-10-02 07:28:14)
Difficulty: 3 of 5Under Nine forever (in Just Math)
Posted on 2015-09-30 (2 Comments)
re: Aha! (spoiler) by Jer (2015-09-30 17:32:16)
Difficulty: 2 of 5Under Black and white socks (in Probability)
Posted on 2015-09-29 (8 Comments)
re: the big drawer by Jer (2015-09-30 08:43:31)
re: Solution?? by Jer (2015-09-29 13:22:09)
Difficulty: 3 of 5Under Extreme Sum Settlement (in Just Math)
Posted on 2015-09-28 (4 Comments)
re(2): Solution (barring errors) by Jer (2015-09-28 16:41:01)
Solution Solution (barring errors) by Jer (2015-09-28 13:05:08)
Difficulty: 3 of 5Under Angle Ratio Ascertainment 2 (in Shapes)
Posted on 2015-09-26 (2 Comments)
A simpler problem by Jer (2015-09-26 22:07:17)
Difficulty: 2 of 5Under Families (in General)
Posted on 2015-09-25 (4 Comments)
Question Some of these are... by Jer (2015-09-26 22:39:42)
Difficulty: 4 of 5Under Quit as a winner (in Games)
Posted on 2015-09-24 (8 Comments)
re: some research (spoiler) by Jer (2015-09-24 17:52:39)
re: First Thoughts by Jer (2015-09-24 12:57:54)
Difficulty: 3 of 5Under Less Than 2015 (in Just Math)
Posted on 2015-09-22 (3 Comments)
re: computer solution by Jer (2015-09-23 09:52:46)
Difficulty: 3 of 5Under Integer Pair and Infinite Puzzle (in Just Math)
Posted on 2015-09-20 (2 Comments)
Solution by Jer (2015-09-22 13:39:31)
Difficulty: 3 of 5Under Coordinating arrival (in Just Math)
Posted on 2015-09-15 (2 Comments)
Solution Slightly different mothod to solution. by Jer (2015-09-15 13:20:13)
Difficulty: 3 of 5Under C reverses into F (in Numbers)
Posted on 2015-09-14 (10 Comments)
Some Thoughts re(2): computer exploration ....... att ALL by Jer (2015-09-15 07:26:01)
re(3): AB? hint by Jer (2015-09-14 17:45:48)
AB? by Jer (2015-09-14 13:38:23)
Difficulty: 2 of 5Under Number Difference and Erasure Puzzle (in Just Math)
Posted on 2015-09-14 (2 Comments)
Solution Too many to list by Jer (2015-09-16 09:34:03)
Difficulty: 2 of 5Under Prime Ratio Possibility (in Just Math)
Posted on 2015-09-11 (3 Comments)
Some Thoughts Other numbers by Jer (2015-09-11 11:47:59)
Difficulty: 3 of 5Under Fair? (in Games)
Posted on 2015-09-10 (10 Comments)
re: Solution by Jer (2015-09-14 12:03:02)
Difficulty: 1 of 5Under Three-syllable word (in Tricks)
Posted on 2015-09-07 (3 Comments)
The answer? No. by Jer (2015-09-07 21:21:33)
Difficulty: 2 of 5Under Six countries (in General)
Posted on 2015-09-04 (8 Comments)
Solution Alternate solution by Jer (2015-09-04 17:27:40)
Difficulty: 3 of 5Under Surprising answer (in Probability)
Posted on 2015-09-02 (6 Comments)
More info than you maybe wanted by Jer (2015-09-02 17:50:09)
Difficulty: 3 of 5Under Convex Hexagon and Ratio Product (in Shapes)
Posted on 2015-09-01 (3 Comments)
re: metasolution by Jer (2015-09-01 12:39:27)
Difficulty: 3 of 5Under Homophone Hunt 2 (in Word Problems)
Posted on 2015-08-31 (3 Comments)
Some starters by Jer (2015-08-31 09:23:04)
Difficulty: 3 of 5Under Ratio Sum Equals Positive Integer (in Just Math)
Posted on 2015-08-30 (3 Comments)
re(2): Answer, maybe full solution. by Jer (2015-08-30 20:54:31)
Solution Answer, maybe full solution. by Jer (2015-08-30 16:47:23)
Difficulty: 3 of 5Under Brick Packing Poser (in Shapes)
Posted on 2015-08-28 (3 Comments)
re(2): Solution by Jer (2015-08-28 22:27:16)
Solution Solution by Jer (2015-08-28 14:00:30)
Difficulty: 3 of 5Under Date Count Conclusion II (in General)
Posted on 2015-08-24 (1 Comments)
Solution Solution by counting by Jer (2015-08-24 21:19:15)
Difficulty: 2 of 5Under Numbers in pi (in Numbers)
Posted on 2015-08-21 (3 Comments)
re: computer solution by Jer (2015-08-21 12:11:49)
Difficulty: 3 of 5Under Visit USA (in General)
Posted on 2015-08-20 (9 Comments)
re: Borders and boundaries by Jer (2015-08-23 11:21:59)
re: If the goal is... by Jer (2015-08-20 22:30:13)
Difficulty: 3 of 5Under This or that? (in Probability)
Posted on 2015-08-19 (4 Comments)
Playing the lottery. by Jer (2015-08-19 10:49:33)
Difficulty: 2 of 5Under Divide et impera (in Numbers)
Posted on 2015-08-18 (2 Comments)
Hints/Tips re: three computer solutions by Jer (2015-08-18 12:50:35)
Difficulty: 3 of 5Under Perfect Square Digit (in Just Math)
Posted on 2015-08-17 (2 Comments)
Solution Solution by Jer (2015-08-18 08:51:44)
Difficulty: 3 of 5Under Infinite Triplet and Perfect Square (in Just Math)
Posted on 2015-08-16 (3 Comments)
Some Thoughts A few by Jer (2015-08-16 14:57:16)
Difficulty: 3 of 5Under Positive Perfect Cube Sum (in Just Math)
Posted on 2015-08-15 (3 Comments)
Some Thoughts An upper bound by Jer (2015-08-16 08:04:53)
Difficulty: 3 of 5Under Non-perfect Cube Root Sum (in Just Math)
Posted on 2015-08-14 (6 Comments)
re(2): An idea by Jer (2015-08-14 23:46:14)
Some Thoughts An idea by Jer (2015-08-14 12:50:16)
Difficulty: 3 of 5Under Rooting for 2015 (in Just Math)
Posted on 2015-08-14 (3 Comments)
re: confirmed solution by Jer (2015-08-14 11:28:21)
Solution Likely Solution by Jer (2015-08-14 09:35:22)
Difficulty: 3 of 5Under Power and Divisibility Puzzle (in Just Math)
Posted on 2015-08-12 (6 Comments)
Solution Analytic solution by Jer (2015-08-13 10:38:31)
Some Thoughts re: computer solution by Jer (2015-08-12 22:29:12)
Difficulty: 1 of 5Under Simpler probability problem? (in Probability)
Posted on 2015-08-11 (14 Comments)
re: re. difficulty level by Jer (2015-08-11 23:13:00)
Difficulty: 3 of 5Under Ending in 5 (in Just Math)
Posted on 2015-08-11 (1 Comments)
Solution Possible solution by Jer (2015-08-11 11:34:13)
Difficulty: 3 of 5Under Quadratic and Divisibility Puzzle (in Just Math)
Posted on 2015-08-09 (2 Comments)
Solution re: a suggestive series / explained by Jer (2015-08-09 22:06:40)
Difficulty: 3 of 5Under Best guess (in Probability)
Posted on 2015-07-30 (3 Comments)
re: computer solution by Jer (2015-07-31 09:55:05)
Difficulty: 3 of 5Under Red, White, and Blue (in Logic)
Posted on 2015-07-29 (4 Comments)
Solution Yet another approach. by Jer (2015-07-29 18:56:37)
Difficulty: 2 of 5Under Pythagorean triplet generator (in Numbers)
Posted on 2015-07-28 (1 Comments)
Solution Solution to a cool trick. by Jer (2015-07-28 10:34:40)
Difficulty: 3 of 5Under What's in a name? (in Word Problems)
Posted on 2015-07-23 (3 Comments)
re(2): Alternating answer by Jer (2015-07-23 20:51:02)
Difficulty: 2 of 5Under Nine trolls (in Just Math)
Posted on 2015-07-23 (9 Comments)
re(2): Solution.....needs editing by Jer (2015-07-23 20:46:43)
Solution Solution by Jer (2015-07-23 10:25:35)
Difficulty: 3 of 5Under Simultaneous Real Settlement (in Just Math)
Posted on 2015-07-20 (2 Comments)
Some Thoughts Obvious ones by Jer (2015-07-20 14:21:24)
Difficulty: 2 of 5Under Guessing suit (in Probability)
Posted on 2015-07-20 (13 Comments)
re: Analysis (spoiler) by Jer (2015-07-29 19:01:37)
Difficulty: 3 of 5Under Circumcenter, orthocenter and ratio puzzle (in Shapes)
Posted on 2015-07-19 (1 Comments)
Solution Analytical solution by Jer (2015-07-20 09:35:48)
Difficulty: 3 of 5Under Side Ratio Resolution (in Shapes)
Posted on 2015-07-18 (4 Comments)
re(3): Solution by Jer (2015-07-20 21:39:24)
Some Thoughts re: Solution by Jer (2015-07-20 10:04:08)
Difficulty: 4 of 5Under Bean coloring (in Probability)
Posted on 2015-07-13 (11 Comments)
re: Solution by Jer (2015-07-29 19:11:31)
Difficulty: 3 of 5Under From ab to yz (in Word Problems)
Posted on 2015-07-06 (5 Comments)
Some Thoughts Probable solution. by Jer (2015-07-06 13:32:30)
Difficulty: 4 of 5Under One 1 to Six 6's (in Probability)
Posted on 2015-07-01 (14 Comments)
re(2): more results (11 and 12) by Jer (2015-07-05 16:07:34)
re: computer aided solution by Jer (2015-07-01 22:17:03)
Difficulty: 3 of 5Under Real Polynomial Puzzle (in Just Math)
Posted on 2015-06-27 (1 Comments)
Many, if not all. by Jer (2015-06-27 16:40:37)
Difficulty: 3 of 5Under Put up or shut up (in Word Problems)
Posted on 2015-06-23 (5 Comments)
A couple that come to mind by Jer (2015-06-24 20:43:40)
Difficulty: 3 of 5Under Linear and Quadratic Puzzle (in Just Math)
Posted on 2015-06-18 (2 Comments)
re: Solution / Generalization by Jer (2015-06-19 07:09:09)
Solution by Jer (2015-06-18 12:33:08)
Difficulty: 3 of 5Under Oh no, not Monty again! (in Probability)
Posted on 2015-06-17 (9 Comments)
re: Solution by Jer (2015-07-29 19:18:47)
Thoughts. No solution. by Jer (2015-06-17 09:21:28)
Difficulty: 3 of 5Under One triplet out (in Numbers)
Posted on 2015-06-16 (3 Comments)
Here's one by Jer (2015-06-16 13:27:52)
Difficulty: 3 of 5Under Expression Quotient Puzzle (in Just Math)
Posted on 2015-06-16 (3 Comments)
Some, maybe all by Jer (2015-06-16 09:30:04)
Difficulty: 2 of 5Under On his way to fitness (in Just Math)
Posted on 2015-06-15 (10 Comments)
re: 2 remarks by Jer (2015-06-15 20:34:18)
A geometrical approach by Jer (2015-06-15 13:10:34)
Solution Statistical approach by Jer (2015-06-15 12:51:48)
Difficulty: 3 of 5Under Which integer was removed? (in Just Math)
Posted on 2015-06-15 (2 Comments)
Solution by Jer (2015-06-15 09:12:18)
Difficulty: 3 of 5Under Harmonic mean and constant determination puzzle (in Shapes)
Posted on 2015-06-13 (2 Comments)
Solution Solution by Jer (2015-06-15 12:36:54)
Difficulty: 4 of 5Under No Unit Cube Dissection (in Shapes)
Posted on 2015-06-11 (7 Comments)
Some Thoughts Closing in? by Jer (2015-06-13 22:09:34)
re(3): first observations by Jer (2015-06-13 21:02:11)
re: first observations by Jer (2015-06-13 17:34:46)
Difficulty: 2 of 5Under No direct evaluation (in Numbers)
Posted on 2015-06-09 (4 Comments)
re(2): Solution by Jer (2015-06-09 11:52:01)
Solution Solution by Jer (2015-06-09 08:15:51)
Difficulty: 3 of 5Under Concurrency and Ratio Product Puzzle (in Shapes)
Posted on 2015-06-06 (1 Comments)
Answer / no solution by Jer (2015-06-09 12:06:23)
Difficulty: 2 of 5Under Map coloring (in Shapes)
Posted on 2015-06-05 (8 Comments)
A further challenge. by Jer (2015-06-06 21:01:25)
re(2): Drawing Challenged (spoiler?) by Jer (2015-06-05 10:51:11)
Difficulty: 3 of 5Under Quadratic and Sextic (in Just Math)
Posted on 2015-06-04 (1 Comments)
Answer by Jer (2015-06-05 11:08:59)
Difficulty: 3 of 5Under Rational Floor Query (in Just Math)
Posted on 2015-06-03 (1 Comments)
Part (A) solution, Part (B) answer w/o solution. by Jer (2015-06-04 10:15:42)
Difficulty: 2 of 5Under Logical, or not? (in General)
Posted on 2015-06-01 (4 Comments)
Some Thoughts re: solution by Jer (2015-06-01 13:48:35)
Difficulty: 2 of 5Under Rational or not? (in Just Math)
Posted on 2015-05-29 (5 Comments)
Some Thoughts This issue causes troubles. by Jer (2016-06-11 12:22:47)
re: solution by Jer (2015-05-29 12:26:22)
Difficulty: 3 of 5Under Three Centroids (in Geometry)
Posted on 2015-05-28 (2 Comments)
Solution Simplified solution & more area relationships by Jer (2015-05-29 09:00:05)
Difficulty: 1 of 5Under What property? (in Shapes)
Posted on 2015-05-28 (4 Comments)
re(2): Only? (no spoiler) (now spoiler) by Jer (2015-05-28 13:02:35)
Some Thoughts Only? (no spoiler) by Jer (2015-05-28 09:51:12)
Difficulty: 2 of 5Under Angle Ratio Ascertainment (in Shapes)
Posted on 2015-05-27 (1 Comments)
Solution Solution by Jer (2015-05-27 08:55:59)
Difficulty: 2 of 5Under Tax Collector (in Games)
Posted on 2015-05-26 (6 Comments)
Solution by Jer (2015-06-02 09:15:39)
Some Thoughts Answer / no solution by Jer (2015-05-26 09:51:14)
re(3): Thoughts. by Jer (2015-05-26 09:39:58)
Difficulty: 3 of 5Under Cuboid Concern (in Shapes)
Posted on 2015-05-21 (2 Comments)
Solution Alternate method, same answer by Jer (2015-05-21 17:07:39)
Difficulty: 2 of 5Under Back to throne (in Probability)
Posted on 2015-05-21 (3 Comments)
Solution One way to solution by Jer (2015-05-21 09:40:07)
Difficulty: 2 of 5Under BOW, WRENCH (in Word Problems)
Posted on 2015-05-14 (2 Comments)
Solution Oh I get it by Jer (2015-05-14 10:58:31)
Difficulty: 3 of 5Under 112233....99 scrambled (in Numbers)
Posted on 2015-05-13 (2 Comments)
Always in the last place you look - spoiler by Jer (2015-05-13 12:14:49)
Difficulty: 2 of 5Under How far can you go? (in Numbers)
Posted on 2015-05-12 (6 Comments)
re(4): Go on, indeed. by Jer (2015-05-13 10:02:01)
re(2): Go on, indeed. by Jer (2015-05-12 13:25:27)
Solution Go on, indeed. by Jer (2015-05-12 09:36:57)
Difficulty: 1 of 5Under A Quickie, not tricky (in Numbers)
Posted on 2015-05-11 (6 Comments)
re(4): Solution spoiler.....Now list them ALL! by Jer (2015-05-11 12:48:26)
re(2): Solution spoiler.....Now list them ALL! by Jer (2015-05-11 11:54:57)
Solution spoiler by Jer (2015-05-11 09:41:43)
Difficulty: 3 of 5Under Sum Root Sum Settlement (in Just Math)
Posted on 2015-05-10 (5 Comments)
re(2): No Subject by Jer (2015-05-12 09:05:02)
Solution No Subject by Jer (2015-05-11 10:15:26)
Difficulty: 2 of 5Under Animal Anagram - Not (in Word Problems)
Posted on 2015-05-06 (3 Comments)
Some Thoughts Anatomical Anagram by Jer (2015-05-07 06:49:27)
Difficulty: 3 of 5Under Printer's glitch (in Just Math)
Posted on 2015-05-05 (4 Comments)
re: answer by Jer (2015-05-06 10:20:05)
Some Thoughts Part (i) by Jer (2015-05-05 13:45:48)
Difficulty: 3 of 5Under My friend (in Cryptography)
Posted on 2015-05-05 (2 Comments)
Solution Solution by Jer (2015-05-05 08:36:06)
Difficulty: 3 of 5Under From E to D (in Logic)
Posted on 2015-04-28 (4 Comments)
Some Thoughts E (if an error) and H solutions only by Jer (2015-04-28 13:32:49)
Difficulty: 3 of 5Under Largest palindrome (in Numbers)
Posted on 2015-04-27 (4 Comments)
Solution Solution by Jer (2015-04-27 12:05:32)
Difficulty: 3 of 5Under Divisor Determination (in Just Math)
Posted on 2015-04-25 (2 Comments)
Some Thoughts A start? by Jer (2015-04-25 16:04:04)
Difficulty: 4 of 5Under Three's a company (in General)
Posted on 2015-04-23 (7 Comments)
5, 9, 12 by Jer (2015-04-23 09:47:18)
Difficulty: 3 of 5Under Arithmetic Quadrilateral (in Shapes)
Posted on 2015-04-19 (4 Comments)
example by Jer (2015-04-20 12:14:45)
Some Thoughts Part (B) no proof. by Jer (2015-04-20 12:04:03)
Solution Part (A) by Jer (2015-04-20 10:55:27)
Difficulty: 3 of 5Under Acute Ascertainment (in Shapes)
Posted on 2015-04-18 (3 Comments)
re(2): Solution by Jer (2015-04-19 21:15:20)
Solution Solution by Jer (2015-04-18 22:12:46)
Difficulty: 3 of 5Under 2012 Lamps (in Games)
Posted on 2015-04-17 (5 Comments)
re(3): Possible solution by Jer (2015-04-18 22:18:40)
Difficulty: 3 of 5Under A Chinese Scene (in Word Problems)
Posted on 2015-04-17 (4 Comments)
Many by Jer (2015-04-17 11:00:50)
Difficulty: 3 of 5Under Some powers decomposed (in Numbers)
Posted on 2015-04-16 (5 Comments)
re(2): Thoughts from OEIS by Jer (2015-04-17 21:13:39)
Thoughts from OEIS by Jer (2015-04-17 08:52:47)
Difficulty: 3 of 5Under Number Count Conclusion (in Just Math)
Posted on 2015-04-15 (4 Comments)
Solution Analytics can get you there by Jer (2015-04-16 09:53:17)
Difficulty: 1 of 5Under So what? (in General)
Posted on 2015-04-13 (5 Comments)
re: Facilissimus by Jer (2015-04-13 08:59:00)
Difficulty: 3 of 5Under Deux Power Divisibility (in Algorithms)
Posted on 2015-04-12 (3 Comments)
re: continuation of Jer's table by Jer (2015-04-12 17:15:52)
Some Thoughts A sequence and some thoughts. by Jer (2015-04-12 10:39:57)
Difficulty: 4 of 5Under Bright light (in Science)
Posted on 2015-04-09 (9 Comments)
I fixed my model. by Jer (2015-04-16 10:23:09)
GSP Model disagrees with the previous posts by Jer (2015-04-09 14:19:29)
Difficulty: 3 of 5Under Tile flipping (in Just Math)
Posted on 2015-04-08 (12 Comments)
re: N = 5; Hypothesis when N is odd by Jer (2015-04-13 06:51:55)
re: Thoughts - a counterexample for you by Jer (2015-04-09 08:51:08)
Difficulty: 2 of 5Under Roman palindrome (in Numbers)
Posted on 2015-04-07 (3 Comments)
Depending on what's allowed. by Jer (2015-04-07 08:54:41)
Difficulty: 3 of 5Under Geometric Rubric (in Just Math)
Posted on 2015-04-04 (2 Comments)
Something cool I never knew about polynomials (hint) by Jer (2015-04-04 14:52:45)
Difficulty: 3 of 5Under Reflection Matrix (in Just Math)
Posted on 2015-04-01 (3 Comments)
re: researched solution by Jer (2015-04-01 21:08:11)
Difficulty: 3 of 5Under Function Function Function Function Foray (in Just Math)
Posted on 2015-03-31 (2 Comments)
Solution A good guess / computer help by Jer (2015-03-31 12:50:47)
Difficulty: 2 of 5Under 27-8=19 (in Just Math)
Posted on 2015-03-31 (2 Comments)
Solution Solution by Jer (2015-03-31 11:59:48)
Difficulty: 3 of 5Under Animal to animal (in Word Problems)
Posted on 2015-03-27 (2 Comments)
Easy Threes and Fours by Jer (2015-03-27 10:23:46)
Difficulty: 3 of 5Under Neighboring tickets (in Numbers)
Posted on 2015-03-26 (2 Comments)
A guess - possible solution by Jer (2015-03-26 14:18:55)
Difficulty: 3 of 5Under Zero Sum Expression (in Just Math)
Posted on 2015-03-25 (2 Comments)
Solution algebraic solution by Jer (2015-03-26 08:17:28)
Difficulty: 2 of 5Under A State of Contradictions (in Word Problems)
Posted on 2015-03-24 (2 Comments)
Spicy solution by Jer (2015-03-24 08:41:01)
Difficulty: 3 of 5Under Polynomial problem (in Just Math)
Posted on 2015-03-22 (2 Comments)
Assuming linear factor by Jer (2015-03-23 14:05:30)
Difficulty: 4 of 5Under Chord Triangle Constant (in Geometry)
Posted on 2015-03-21 (4 Comments)
A GSP start by Jer (2015-03-21 20:45:12)
Difficulty: 3 of 5Under Isosceles Crease (in Shapes)
Posted on 2015-03-19 (2 Comments)
Solution exact solution by Jer (2015-03-19 14:16:21)
Difficulty: 3 of 5Under Pentagon Fraction Minimizing (in Just Math)
Posted on 2015-03-16 (2 Comments)
re: solution by Jer (2015-03-16 16:19:38)
Difficulty: 3 of 5Under Linear and Quadratic Square (in Just Math)
Posted on 2015-03-15 (4 Comments)
re: A way not to do it. by Jer (2015-03-16 11:51:33)
Difficulty: 1 of 5Under A Quickie (in Numbers)
Posted on 2015-03-13 (1 Comments)
Solution solution by Jer (2015-03-13 08:50:08)
Difficulty: 3 of 5Under Location, location, location (in Geometry)
Posted on 2015-03-12 (8 Comments)
Some Thoughts re(3): To answer the question... by Jer (2015-03-13 08:44:48)
Difficulty: 3 of 5Under Root sum equals integer (in Just Math)
Posted on 2015-03-10 (7 Comments)
Solution solution & playing around by Jer (2015-03-10 12:07:14)
Difficulty: 3 of 5Under Triangle to Triangle (in General)
Posted on 2015-03-07 (1 Comments)
Solution by Jer (2015-03-09 14:23:21)
Difficulty: 3 of 5Under Divisor Count Conclusion (in Just Math)
Posted on 2015-03-06 (2 Comments)
solution by Jer (2015-03-06 08:46:17)
Difficulty: 2 of 5Under Minimizing Perimeter (in Shapes)
Posted on 2015-03-04 (15 Comments)
re(2): A triangle that works, may not be minimum (spoiler) by Jer (2015-03-04 12:32:22)
re(3): NO DICE.....not a spoiler by Jer (2015-03-04 12:28:11)
A triangle that works, may not be minimum by Jer (2015-03-04 09:47:08)
re: NO DICE.....not a spoiler by Jer (2015-03-04 09:15:51)
Difficulty: 2 of 5Under Phrase a question II (in Numbers)
Posted on 2015-03-03 (2 Comments)
Solution What is... (solution) by Jer (2015-03-03 09:10:57)
Difficulty: 2 of 5Under Equilateral fun (in Geometry)
Posted on 2015-02-28 (2 Comments)
Solution Not the easy way (solution) by Jer (2015-02-28 13:58:00)
Difficulty: 2 of 5Under Prime and perfect (in Numbers)
Posted on 2015-02-27 (3 Comments)
re(2): Solution - may not be complete by Jer (2015-03-01 20:16:44)
Solution Solution - may not be complete by Jer (2015-02-28 11:26:35)
Difficulty: 3 of 5Under Academia, defeated, yesterday (in Word Problems)
Posted on 2015-02-26 (6 Comments)
Bad puns by Jer (2015-02-26 10:00:26)
Difficulty: 2 of 5Under Next year vs the current year (in Numbers)
Posted on 2015-02-25 (5 Comments)
re(3): Paper and Pencil solution, part (a) / part (b) by Jer (2015-02-25 11:42:40)
re: Paper and Pencil solution, part (a) / part (b) by Jer (2015-02-25 11:04:56)
Difficulty: 3 of 5Under No other case (in Just Math)
Posted on 2015-02-24 (2 Comments)
re: The easy half / another third by Jer (2015-02-25 10:43:51)
The easy half by Jer (2015-02-24 12:13:27)
Difficulty: 1 of 5Under Composite prime (in Numbers)
Posted on 2015-02-24 (2 Comments)
Solution by Jer (2015-02-24 08:29:41)
Difficulty: 3 of 5Under Bamboo Baffle (in Riddles)
Posted on 2015-02-23 (3 Comments)
glub glub by Jer (2015-02-23 13:37:14)
Difficulty: 2 of 5Under Not too much (in Numbers)
Posted on 2015-02-20 (8 Comments)
re(2): Is this valid? no ! - partial spoiler by Jer (2015-02-20 21:19:34)
Is this valid? by Jer (2015-02-20 10:07:29)
Difficulty: 2 of 5Under The final quantity (in Numbers)
Posted on 2015-02-18 (4 Comments)
Solution Two methods by hand by Jer (2015-02-18 22:56:24)
Difficulty: 3 of 5Under Approximating radicals (in Numbers)
Posted on 2015-02-17 (4 Comments)
Clarification by Jer (2015-02-18 21:59:23)
Difficulty: 3 of 5Under An ancient Egyptian problem (in Just Math)
Posted on 2015-02-13 (5 Comments)
re: computer solutions by Jer (2015-02-14 11:55:06)
Some simple solutions by Jer (2015-02-13 13:36:37)
Difficulty: 2 of 5Under Bound the product (in Numbers)
Posted on 2015-02-13 (4 Comments)
re: Possible solution. Correction and second part. by Jer (2015-02-13 12:47:18)
Difficulty: 3 of 5Under Minding mines. (in Just Math)
Posted on 2015-02-07 (1 Comments)
Solution Solution by Jer (2015-02-08 15:12:14)
Difficulty: 3 of 5Under Very very colourful (in General)
Posted on 2015-02-06 (2 Comments)
#1, 3, 8 by Jer (2015-02-06 14:01:25)
Difficulty: 3 of 5Under Rooting for Roots (in Just Math)
Posted on 2015-02-04 (2 Comments)
re: solution by Jer (2015-02-05 09:26:25)
Difficulty: 2 of 5Under ProSum Numbers (in Numbers)
Posted on 2015-01-28 (5 Comments)
re: computer solution by Jer (2015-01-28 11:32:19)
Some Thoughts some sequences by Jer (2015-01-28 11:25:10)
Difficulty: 3 of 5Under Deux Difference Deduction (in Sequences)
Posted on 2015-01-23 (8 Comments)
Solution Enough factors? Solution. by Jer (2015-01-23 12:45:52)
Difficulty: 2 of 5Under Eliot Ness meets Paul Erdős (in Numbers)
Posted on 2015-01-23 (3 Comments)
Solution Solution by Jer (2015-01-23 08:11:40)
Difficulty: 2 of 5Under What price glory? (in Games)
Posted on 2015-01-22 (5 Comments)
re: If there isn't an even better strategy... (spoiler?) by Jer (2015-01-22 12:02:31)
Difficulty: 3 of 5Under Deux Digit Deduction (in Just Math)
Posted on 2015-01-21 (2 Comments)
Solution powerful solution by Jer (2015-01-21 12:25:04)
Difficulty: 2 of 5Under Easy as One, Two, Three (in Numbers)
Posted on 2015-01-20 (1 Comments)
Solution by Jer (2015-01-20 09:13:44)
Difficulty: 2 of 5Under 4 clues (in Numbers)
Posted on 2015-01-19 (3 Comments)
Solution Solution by Jer (2015-01-19 10:28:32)
Difficulty: 3 of 5Under Volume Ratio Validation (in Shapes)
Posted on 2015-01-18 (2 Comments)
Solution Solution by Jer (2015-01-22 08:28:06)
Difficulty: 2 of 5Under Squares and Rectangles II (in Just Math)
Posted on 2015-01-16 (2 Comments)
Solution A quick count. by Jer (2015-01-16 09:03:48)
Difficulty: 2 of 5Under Square Sum Settlement (in Just Math)
Posted on 2015-01-14 (3 Comments)
re: computer solution (spoiler) by Jer (2015-01-14 11:26:08)
Difficulty: 3 of 5Under Sum and Difference (in Just Math)
Posted on 2015-01-05 (1 Comments)
Solution From a graph by Jer (2015-01-05 09:02:01)
Difficulty: 3 of 5Under 4d divides 5d (in Just Math)
Posted on 2014-12-26 (2 Comments)
Possible solution by Jer (2014-12-26 20:41:27)
Difficulty: 2 of 5Under m & n (in Just Math)
Posted on 2014-12-18 (2 Comments)
Some Thoughts re: computer-aided solution by Jer (2014-12-18 13:00:57)
Difficulty: 2 of 5Under Equation Exercise (in Just Math)
Posted on 2014-12-16 (3 Comments)
Solution solving as little as possible by Jer (2014-12-16 13:48:49)
Difficulty: 3 of 5Under Trigo inequality (in Just Math)
Posted on 2014-12-11 (11 Comments)
re(4): solution. An idea by Jer (2014-12-13 20:25:35)
Difficulty: 3 of 5Under Year Yearn 2 (in General)
Posted on 2014-12-11 (4 Comments)
Solution d1 solution by Jer (2014-12-11 13:36:40)
Difficulty: 3 of 5Under Out of this word (in Word Problems)
Posted on 2014-12-08 (9 Comments)
re(3): Most of a solution ---- hint , not a spoiler by Jer (2014-12-08 22:03:24)
re: Most of a solution by Jer (2014-12-08 11:56:19)
Difficulty: 3 of 5Under Triangle Area Trial (in Shapes)
Posted on 2014-12-07 (3 Comments)
Approximate solution from GSP by Jer (2014-12-08 06:51:09)
Difficulty: 3 of 5Under Going North-East (in Just Math)
Posted on 2014-12-05 (4 Comments)
re(2): Another way to avoid tedium. by Jer (2014-12-07 20:31:21)
Solution Another way to avoid tedium. by Jer (2014-12-06 21:41:37)
Difficulty: 4 of 5Under Simultaneous Surmise (in Just Math)
Posted on 2014-11-29 (3 Comments)
re: Finally! by Jer (2014-11-29 22:27:41)
Difficulty: 3 of 5Under Geometric Sequence Settlement III (in Sequences)
Posted on 2014-11-26 (3 Comments)
Solution A slightly different approach by Jer (2014-11-28 16:13:21)
Difficulty: 3 of 5Under A symmetric relation (in Just Math)
Posted on 2014-11-19 (5 Comments)
Solution Polar solution by Jer (2014-11-19 10:40:05)
Difficulty: 3 of 5Under Inconsiderable Integer Illation (in Just Math)
Posted on 2014-11-16 (10 Comments)
re(2): Actual answer -- calculator solution by Jer (2014-11-16 22:26:01)
Difficulty: 2 of 5Under My numbers (in Numbers)
Posted on 2014-11-14 (3 Comments)
Solution All of the solutions by Jer (2014-11-14 09:02:55)
Difficulty: 3 of 5Under Deux Digit Determination (in Just Math)
Posted on 2014-11-13 (4 Comments)
Some Thoughts Full expansion, but unproven result by Jer (2014-11-13 14:00:50)
Difficulty: 3 of 5Under Box Volume Baffle (in Shapes)
Posted on 2014-11-05 (5 Comments)
Solution Probable solution (is my reasoning sensible?) by Jer (2014-11-05 22:36:58)
Difficulty: 3 of 5Under RMS Rigor (in Just Math)
Posted on 2014-11-04 (4 Comments)
Solution Almost full solution by Jer (2014-11-05 13:11:15)
Difficulty: 3 of 5Under Friendship paradox (in Paradoxes)
Posted on 2014-10-31 (4 Comments)
re: n = 721,000,000: Intuitively by Jer (2014-11-03 09:30:35)
Difficulty: 2 of 5Under Angle evaluating (in Geometry)
Posted on 2014-10-28 (1 Comments)
Solution One inefficient way. by Jer (2014-10-28 13:56:37)
Difficulty: 3 of 5Under Extending tic-tac-toe (in Just Math)
Posted on 2014-10-23 (6 Comments)
Some Thoughts General Solution by Jer (2014-10-23 10:18:48)
Solution 6x6x6 solution by Jer (2014-10-23 10:05:28)
Solution 5x5x5 solution by Jer (2014-10-23 10:00:22)
Difficulty: 1 of 5Under One by two (in Numbers)
Posted on 2014-10-22 (6 Comments)
re(3): 19 solutions by Jer (2014-10-22 20:46:38)
Some Thoughts 19 solutions by Jer (2014-10-22 10:38:08)
Difficulty: 2 of 5Under Switch Settlement (in Logic)
Posted on 2014-10-20 (3 Comments)
Solution Solution (different from previous) by Jer (2014-10-20 08:48:17)
Difficulty: 3 of 5Under Distinct Values Validation (in Just Math)
Posted on 2014-10-16 (7 Comments)
re(2): Simplified, no solution by Jer (2014-10-17 09:47:23)
Hints/Tips Simplified, no solution by Jer (2014-10-16 10:16:51)
Difficulty: 3 of 5Under Counting Crossings (in Geometry)
Posted on 2014-10-08 (7 Comments)
Are the solutions correct? by Jer (2014-10-08 14:29:43)
Difficulty: 3 of 5Under Winning Ticket Tickle (in Probability)
Posted on 2014-10-06 (6 Comments)
re: possible solution by Jer (2014-10-06 14:13:49)
Difficulty: 3 of 5Under Defrosting the Cone (in Calculus)
Posted on 2014-10-02 (1 Comments)
Solution Most calculations not shown by Jer (2014-10-03 11:29:41)
Difficulty: 3 of 5Under Square Result Rumination (in Just Math)
Posted on 2014-09-28 (6 Comments)
re: Technical solution--but a larger question remains. by Jer (2014-09-28 10:04:46)
Difficulty: 3 of 5Under Mary, Mary, Quite Orderly (in Just Math)
Posted on 2014-09-24 (6 Comments)
re: solution by Jer (2014-09-25 06:46:45)
Difficulty: 2 of 5Under Fill in (in Sequences)
Posted on 2014-09-24 (6 Comments)
Solution re(2): Not sure why you would do this... (Probable intended solution.) by Jer (2014-09-25 09:50:59)
Not sure why you would do this... by Jer (2014-09-24 10:56:48)
Difficulty: 3 of 5Under Rectangle Color Rigor (in Just Math)
Posted on 2014-09-23 (4 Comments)
Solution This seems too easy by Jer (2014-09-23 10:10:57)
Difficulty: 2 of 5Under Max and Min (in Just Math)
Posted on 2014-09-22 (3 Comments)
Some Thoughts Guesses by Jer (2014-09-22 09:15:13)
Difficulty: 2 of 5Under Interior Angle Aggregate (in Shapes)
Posted on 2014-09-16 (2 Comments)
Solution alternate solution by Jer (2014-09-16 12:07:39)
A solution by Jer (2014-09-16 11:52:06)
Difficulty: 3 of 5Under Cubic Quandary (in Calculus)
Posted on 2014-09-13 (2 Comments)
Solution Solution without calculus. by Jer (2014-09-16 10:01:59)
Solution Solution by Jer (2014-09-15 14:02:41)
Difficulty: 3 of 5Under 4 cents (in Shapes)
Posted on 2014-09-12 (11 Comments)
About this problem. by Jer (2016-01-31 11:03:45)
Difficulty: 3 of 5Under Convex Hull (in Geometry)
Posted on 2014-09-10 (1 Comments)
Solution Most of the answer by Jer (2014-09-11 11:56:14)
Difficulty: 2 of 5Under Angle Analysis (in Shapes)
Posted on 2014-09-05 (1 Comments)
Solution based on previous by Jer (2014-09-06 00:24:51)
Difficulty: 1 of 5Under Fibo's quickie (in Logic)
Posted on 2014-09-03 (4 Comments)
Solution not so quick answer by Jer (2014-09-03 11:57:38)
Difficulty: 2 of 5Under Decimal Digits (in General)
Posted on 2014-09-02 (5 Comments)
Some Thoughts My thoughts by Jer (2014-09-02 15:44:34)
Difficulty: 2 of 5Under Segment Section Settlement (in Probability)
Posted on 2014-08-28 (3 Comments)
Solution This should work by Jer (2014-08-28 12:24:32)
Difficulty: 3 of 5Under A PowerSum Puzzle (in Numbers)
Posted on 2014-08-27 (3 Comments)
Playing with sketchpad by Jer (2014-09-04 23:32:27)
Close but not quite. by Jer (2014-08-31 01:31:59)
Difficulty: 3 of 5Under Testy Triplet Treat II (in Just Math)
Posted on 2014-07-25 (4 Comments)
Solution Solution and generalization by Jer (2014-07-25 10:28:45)
Difficulty: 4 of 5Under Heptadecagon Hinder (in Shapes)
Posted on 2014-07-13 (1 Comments)
Some Thoughts I suppose by Jer (2014-07-16 00:46:38)
Difficulty: 3 of 5Under Sum Power Digit Determination (in Just Math)
Posted on 2014-07-12 (4 Comments)
Solution Shortcut solution by Jer (2014-07-12 23:51:27)
Difficulty: 3 of 5Under Union of squares (in Shapes)
Posted on 2014-07-09 (10 Comments)
re: set of numbers by Jer (2014-07-12 23:55:14)
Some odds are possible by Jer (2014-07-09 13:30:53)
Difficulty: 3 of 5Under Two Oblate Spheroids (in Shapes)
Posted on 2014-07-04 (1 Comments)
Approximate solution by Jer (2014-07-07 00:28:57)
Difficulty: 2 of 5Under Arctan Appraisal (in Just Math)
Posted on 2014-07-01 (2 Comments)
No Subject by Jer (2014-07-01 11:17:51)
Difficulty: 3 of 5Under F. to P. generator (in Numbers)
Posted on 2014-06-25 (4 Comments)
Solution Isn't this more general and simple? by Jer (2014-06-26 11:07:00)
Difficulty: 3 of 5Under Minimum Value Muse (in Just Math)
Posted on 2014-06-20 (3 Comments)
re: computer solution by Jer (2014-06-20 13:45:13)
Possible solution with thought process by Jer (2014-06-20 11:48:18)
Difficulty: 3 of 5Under A tall tower (in Geometry)
Posted on 2014-06-18 (6 Comments)
re: Question by Jer (2014-06-19 01:21:00)
Difficulty: 2 of 5Under Validity Vindication (in Shapes)
Posted on 2014-06-18 (2 Comments)
Solution solution in three and a half folds. by Jer (2014-06-18 15:02:57)
Difficulty: 3 of 5Under Cardboard Conclusion (in Shapes)
Posted on 2014-06-08 (3 Comments)
Prettier solution by Jer (2014-06-09 10:56:11)
Difficulty: 3 of 5Under Sum Settlement (in Just Math)
Posted on 2014-06-03 (4 Comments)
Solution Possible solution by Jer (2014-06-03 13:42:42)
Difficulty: 2 of 5Under Fuel Feat (in Just Math)
Posted on 2014-06-03 (4 Comments)
re(2): Solution by Jer (2014-06-03 12:46:38)
Difficulty: 2 of 5Under 3 more hats (in General)
Posted on 2014-06-02 (1 Comments)
Solution Solution spoiler by Jer (2014-06-02 16:04:37)
Difficulty: 2 of 5Under Bricks and Box Baffle II (in Shapes)
Posted on 2014-05-29 (1 Comments)
solution and minimum by Jer (2014-05-29 15:18:16)
Difficulty: 3 of 5Under Representation Initiation (in Just Math)
Posted on 2014-05-26 (3 Comments)
Solution Simpler computer solution by Jer (2014-05-27 12:45:26)
Difficulty: 3 of 5Under Harmonic Sequence Settlement (in Just Math)
Posted on 2014-05-22 (3 Comments)
Some Thoughts solution with no explanation by Jer (2014-05-22 16:25:10)
Difficulty: 3 of 5Under Array Assignment (in Just Math)
Posted on 2014-05-20 (2 Comments)
Some Thoughts Ignoring (ii) by Jer (2014-05-20 13:36:50)
Difficulty: 3 of 5Under Guessing Game (in Numbers)
Posted on 2014-05-16 (18 Comments)
Ideas for part (a) by Jer (2014-05-16 16:04:57)
Difficulty: 2 of 5Under The highest prime (in Numbers)
Posted on 2014-05-16 (8 Comments)
Solution Possible solution by Jer (2014-05-16 10:31:41)
Difficulty: 3 of 5Under Attack Assay (in Probability)
Posted on 2014-05-14 (3 Comments)
Solution queens solution by Jer (2014-05-14 13:19:31)
Difficulty: 4 of 5Under 5 unknown digits (in Numbers)
Posted on 2014-05-13 (5 Comments)
an interesting result by Jer (2014-05-13 15:51:56)
Solution Solution by Jer (2014-05-13 13:41:40)
Difficulty: 3 of 5Under Repdigit Rigor (in Just Math)
Posted on 2014-05-11 (2 Comments)
Solution Solution by Jer (2014-05-12 12:47:31)
Difficulty: 3 of 5Under The Ten Statements II (in Logic)
Posted on 2014-05-08 (7 Comments)
re(3): Solution by Jer (2014-05-09 00:34:13)
Question re: Solution by Jer (2014-05-08 23:31:24)
Difficulty: 3 of 5Under Baby Blue (in Probability)
Posted on 2014-05-08 (11 Comments)
Careful reading and further thoughts by Jer (2014-05-08 12:46:47)
Difficulty: 3 of 5Under Powerful Divisor (in Just Math)
Posted on 2014-05-01 (8 Comments)
re(2): solution by Jer (2014-05-02 12:39:33)
re: some examples by Jer (2014-05-01 16:47:40)
Solution solution by Jer (2014-05-01 16:38:40)
Difficulty: 3 of 5Under Entertain Every Value? (in Just Math)
Posted on 2014-04-29 (2 Comments)
Solution proof (acceptable?) by Jer (2014-04-29 14:10:04)
Difficulty: 3 of 5Under Egg Exertion (in Just Math)
Posted on 2014-04-28 (1 Comments)
Solution solution by Jer (2014-04-28 13:05:56)
Difficulty: 4 of 5Under Cinq Carve (in Shapes)
Posted on 2014-04-25 (7 Comments)
Solution New, simpler solution. by Jer (2014-04-27 01:21:40)
re(4): a solution - clarifying by Jer (2014-04-27 01:00:39)
re(2): a solution by Jer (2014-04-26 18:26:00)
Solution a solution by Jer (2014-04-26 11:28:00)
Difficulty: 2 of 5Under Half of 4X4 (in Numbers)
Posted on 2014-04-24 (5 Comments)
re: Spoiler by Jer (2014-04-26 18:44:45)
Solution Possible solution possible spoiler by Jer (2014-04-24 21:50:23)
Difficulty: 1 of 5Under 5 Digit Number III (in Just Math)
Posted on 2014-04-22 (3 Comments)
re: Proof - shortened by Jer (2014-04-24 01:32:35)
Difficulty: 2 of 5Under Neighbors (in Numbers)
Posted on 2014-04-18 (8 Comments)
re(3): computer solution by Jer (2014-04-18 23:09:25)
re: computer solution by Jer (2014-04-18 14:08:50)
Solution a bit of cheating (spoiler) by Jer (2014-04-18 12:58:37)
Difficulty: 3 of 5Under Cubic Sequence? (in Sequences)
Posted on 2014-04-16 (2 Comments)
Solution Easy to answer, proof not so much. (solution) by Jer (2014-04-17 10:55:34)
Difficulty: 2 of 5Under Colorful hats (in Logic)
Posted on 2014-04-16 (6 Comments)
obvious answer if possible by Jer (2014-04-16 10:26:41)
Difficulty: 4 of 5Under Pseudo-FIBO (in Sequences)
Posted on 2014-04-14 (5 Comments)
'generated' by Jer (2014-04-15 00:06:58)
Difficulty: 2 of 5Under What digit? (in Numbers)
Posted on 2014-04-08 (1 Comments)
Solution When you see it... (spoiler) by Jer (2014-04-08 10:44:32)
Difficulty: 3 of 5Under Fold Ratio (in Shapes)
Posted on 2014-04-05 (2 Comments)
Solution I can almost do it in my head. by Jer (2014-04-07 00:27:59)
Difficulty: 3 of 5Under Directly from Lucas (in Sequences)
Posted on 2014-04-04 (1 Comments)
Show, yes. Prove, no. by Jer (2014-04-07 12:46:52)
Difficulty: 3 of 5Under Reverse Rigor (in Just Math)
Posted on 2014-04-04 (2 Comments)
Solution Interesting result solution by Jer (2014-04-04 13:10:20)
Difficulty: 3 of 5Under Intriguing Integral Illation II (in Calculus)
Posted on 2014-04-03 (2 Comments)
Some Thoughts Ummm... by Jer (2014-04-04 22:02:57)
Difficulty: 3 of 5Under Fold Judgement II (in Shapes)
Posted on 2014-04-01 (6 Comments)
Solution Full solution by Jer (2014-04-01 14:51:31)
Difficulty: 3 of 5Under Integers only (in Sequences)
Posted on 2014-03-31 (7 Comments)
re(3): Some questions / Possible solution(s) by Jer (2014-03-31 20:29:02)
Solution re: Some questions / Possible solution(s) by Jer (2014-03-31 14:56:35)
Difficulty: 3 of 5Under 2 to 1 Bisector (in Geometry)
Posted on 2014-03-30 (2 Comments)
Some Thoughts A track. (right track?) by Jer (2014-03-31 12:56:05)
Difficulty: 3 of 5Under Divisible by 27? (in Just Math)
Posted on 2014-03-29 (1 Comments)
Solution Why 27? Solution. by Jer (2014-03-29 15:27:39)
Difficulty: 4 of 5Under Words count (in Numbers)
Posted on 2014-03-25 (8 Comments)
re(3): Solution by Jer (2014-03-26 09:21:08)
Solution re: Solution by Jer (2014-03-25 15:00:05)
Solution by Jer (2014-03-25 13:09:33)
Difficulty: 2 of 5Under How high? (in Numbers)
Posted on 2014-03-25 (4 Comments)
Solution Recursive Proof by Jer (2014-03-25 12:03:38)
Difficulty: 3 of 5Under Simultaneous Settlement IV (in Just Math)
Posted on 2014-03-22 (2 Comments)
Solution Solution. by Jer (2014-03-22 23:48:51)
Difficulty: 3 of 5Under Solution or solutions (in Sequences)
Posted on 2014-03-20 (6 Comments)
re: computer evaluation by Jer (2014-03-20 21:44:13)
Part 1 by Jer (2014-03-20 14:51:12)
Difficulty: 3 of 5Under Summing the factorials (in Numbers)
Posted on 2014-03-15 (3 Comments)
re: computer solution by Jer (2014-03-15 22:34:56)
Difficulty: 4 of 5Under A permuted multiplication (in Numbers)
Posted on 2014-03-11 (9 Comments)
re(2): Can it be done? by Jer (2014-03-12 07:51:37)
re: Yes it can. by Jer (2014-03-11 14:41:09)
Solution Can it be done? by Jer (2014-03-11 12:21:11)
Difficulty: 3 of 5Under Inradii Ratio (in Geometry)
Posted on 2014-03-08 (1 Comments)
Solution Analytic Solution by Jer (2014-03-10 23:45:18)
Difficulty: 3 of 5Under Equilateral Crease II (in Shapes)
Posted on 2014-03-05 (3 Comments)
Solution Part (ii) by Jer (2014-03-06 15:34:49)
Difficulty: 2 of 5Under A partial deck (in Numbers)
Posted on 2014-03-05 (3 Comments)
re(2): Solution ....... att: Jer by Jer (2014-03-06 11:19:56)
Solution Solution by Jer (2014-03-05 10:26:11)
Difficulty: 3 of 5Under Formula Formulation (in Just Math)
Posted on 2014-03-03 (4 Comments)
Some Thoughts first findings by Jer (2014-03-03 16:26:12)
Difficulty: 3 of 5Under Switching Teams (in Probability)
Posted on 2014-02-28 (8 Comments)
Question Clarifying questions by Jer (2014-02-28 12:58:08)
To Charlie. by Jer (2014-02-28 12:54:46)
Difficulty: 3 of 5Under sum Up (in Numbers)
Posted on 2014-02-26 (5 Comments)
re: Method for solution... by Jer (2014-02-27 00:37:04)
Difficulty: 3 of 5Under Bullseye II (in Logic)
Posted on 2014-02-25 (3 Comments)
Solution Solution by Jer (2014-02-25 13:55:35)
Difficulty: 2 of 5Under All Odds (in Numbers)
Posted on 2014-02-24 (2 Comments)
Possible solution by Jer (2014-02-24 10:49:32)
Difficulty: 3 of 5Under Penta-Quadratic (in Just Math)
Posted on 2014-02-23 (5 Comments)
re(2): A long way ----=0.0024990669i ?? by Jer (2014-03-06 11:25:22)
Solution A long way by Jer (2014-02-23 21:35:56)
Difficulty: 3 of 5Under Overlapping Triangles (in Geometry)
Posted on 2014-02-22 (1 Comments)
Solution Sketchpad by Jer (2014-02-22 11:50:18)
Difficulty: 3 of 5Under Naturally Geometric (in Just Math)
Posted on 2014-02-21 (1 Comments)
Solution A solution by Jer (2014-02-21 23:17:21)
Difficulty: 2 of 5Under Mean = median (in Just Math)
Posted on 2014-02-20 (4 Comments)
re: solution by Jer (2014-02-21 01:03:35)
Difficulty: 3 of 5Under Get a good look (in Calculus)
Posted on 2014-02-18 (5 Comments)
re: Interesting observation by Jer (2014-02-19 00:39:47)
Difficulty: 3 of 5Under Six sets (in Numbers)
Posted on 2014-02-17 (7 Comments)
Ignoring distinct p&p but it has an error by Jer (2014-02-18 00:11:36)
Difficulty: 3 of 5Under Equal areas (in Geometry)
Posted on 2014-02-15 (1 Comments)
Solution Solution by Jer (2014-02-16 20:04:20)
Difficulty: 3 of 5Under Largest Overlapped Area (in Shapes)
Posted on 2014-02-11 (3 Comments)
Solution More thorough answer by Jer (2014-02-12 17:03:47)
Hastily sketched answer by Jer (2014-02-12 08:44:40)
Difficulty: 3 of 5Under Remove last three to get cube root (in Numbers)
Posted on 2014-02-11 (3 Comments)
Solution Solution by Jer (2014-02-11 10:43:09)
Difficulty: 3 of 5Under Cards In A Circle (in General)
Posted on 2014-02-09 (1 Comments)
Some Thoughts My reckoning by Jer (2014-02-11 00:51:23)
Difficulty: 3 of 5Under Reciprocal composition is reciprocal. (in Just Math)
Posted on 2014-02-08 (4 Comments)
re: Family Plan (spoiler?) by Jer (2014-02-08 13:19:40)
Difficulty: 2 of 5Under 3 after 4 (in Sequences)
Posted on 2014-02-04 (1 Comments)
Hints? by Jer (2014-02-04 13:31:57)
Difficulty: 4 of 5Under My crazy die (in Probability)
Posted on 2014-02-03 (3 Comments)
Some Thoughts a and c by hand by Jer (2014-02-04 13:09:46)
Difficulty: 2 of 5Under A Tetrahedron (in General)
Posted on 2014-01-30 (4 Comments)
re(3): Multiple ways (spoiler) by Jer (2014-01-30 15:54:33)
re: Multiple ways (spoiler) by Jer (2014-01-30 11:03:28)
Difficulty: 2 of 5Under N & n (in Just Math)
Posted on 2014-01-27 (7 Comments)
re(2): Looking at my wall by Jer (2014-01-27 13:41:59)
Excel solutions by Jer (2014-01-27 13:39:16)
Looking at my wall by Jer (2014-01-27 12:42:36)
Difficulty: 2 of 5Under Geography? Spelling? Logic? (in Tricks)
Posted on 2014-01-24 (4 Comments)
re(2): question of identity by Jer (2014-01-24 23:28:18)
Difficulty: 3 of 5Under Maximizing Matches Model (in Numbers)
Posted on 2014-01-22 (16 Comments)
Some Thoughts My initial suggestions by Jer (2014-01-22 14:11:12)
Difficulty: 4 of 5Under Advanced alphametics (in Numbers)
Posted on 2014-01-17 (8 Comments)
Other thoughts by Jer (2014-01-17 15:54:35)
Difficulty: 3 of 5Under Some Squares Sum Year (in Just Math)
Posted on 2014-01-16 (2 Comments)
I can program by Jer (2014-01-16 15:38:29)
Difficulty: 3 of 5Under Summing up the dividers' dividers (in Numbers)
Posted on 2014-01-15 (1 Comments)
Solution Some sum (spoiler, incomplete proof) by Jer (2014-01-15 14:07:06)
Difficulty: 3 of 5Under Pentagon in a semicircle (in Geometry)
Posted on 2014-01-11 (1 Comments)
Solution Solution by Jer (2014-01-12 01:33:18)
Difficulty: 2 of 5Under Unusual Crossword Puzzle (in Word Problems)
Posted on 2014-01-09 (5 Comments)
Observations and a question for all. by Jer (2014-01-09 13:42:05)
Difficulty: 1 of 5Under A missing symbol (in Word Problems)
Posted on 2014-01-08 (2 Comments)
Some Thoughts Some solutions by Jer (2014-01-08 11:32:52)
Difficulty: 3 of 5Under Supreme Subset (in Just Math)
Posted on 2014-01-02 (6 Comments)
Some Thoughts Blindly crossing possible solution by Jer (2014-01-02 15:04:41)
Difficulty: 2 of 5Under all squares (in Geometry)
Posted on 2014-01-01 (1 Comments)
Solution Proof by Jer (2014-01-02 14:37:05)
Difficulty: 2 of 5Under Trigonometric product (in Numbers)
Posted on 2013-12-29 (4 Comments)
Solution A proof. by Jer (2013-12-29 19:10:25)
Difficulty: 3 of 5Under Going Maximum With Harmonic (in Just Math)
Posted on 2013-12-28 (2 Comments)
Solution By hand by Jer (2013-12-28 23:54:34)
Difficulty: 3 of 5Under Lucas squares (in Just Math)
Posted on 2013-12-15 (6 Comments)
re(4): Long solution. by Jer (2013-12-17 11:06:49)
re(2): Long solution. by Jer (2013-12-16 15:46:27)
Solution Long solution. by Jer (2013-12-16 09:33:17)
Difficulty: 1 of 5Under Six Letter Strikeout (in Tricks)
Posted on 2013-12-10 (6 Comments)
Solution Solution with explanation by Jer (2013-12-11 11:15:49)
Difficulty: 2 of 5Under Two Rectangles (in Geometry)
Posted on 2013-12-09 (2 Comments)
Some solutions by Jer (2013-12-09 11:20:33)
Difficulty: 3 of 5Under Only One, One, One II (in Just Math)
Posted on 2013-12-08 (5 Comments)
re: Counterexample? by Jer (2013-12-10 18:22:03)
Counterexample? by Jer (2013-12-09 13:20:52)
Difficulty: 4 of 5Under Amazing (in Geometry)
Posted on 2013-12-07 (1 Comments)
A specific case by Jer (2013-12-10 16:19:51)
Difficulty: 3 of 5Under 1998 (in Numbers)
Posted on 2013-12-05 (5 Comments)
Some ways to do 2 by Jer (2013-12-05 15:55:41)
Some Thoughts Just the first by Jer (2013-12-05 15:15:47)
Difficulty: 3 of 5Under Consecutive Base Baffle (in Just Math)
Posted on 2013-12-04 (4 Comments)
re: computer solution by Jer (2013-12-04 18:27:49)
Difficulty: 3 of 5Under Square in a Pentagon (in Geometry)
Posted on 2013-12-01 (4 Comments)
Solution re: More likely to be correct solution. by Jer (2013-12-03 00:44:35)
Solution More likely to be correct solution. by Jer (2013-12-02 16:15:39)
Possible solution by Jer (2013-12-02 15:58:05)
Difficulty: 3 of 5Under Minimize Angle (in Calculus)
Posted on 2013-11-30 (1 Comments)
Solution Direct calculus approach by Jer (2013-11-30 14:51:24)
Difficulty: 3 of 5Under Joker Possession (in Logic)
Posted on 2013-11-27 (1 Comments)
Solution Three of a kind (Solution) by Jer (2013-11-27 10:48:51)
Difficulty: 3 of 5Under Face-Up Card Array (in Logic)
Posted on 2013-11-20 (1 Comments)
Solution by homomorphism by Jer (2013-11-20 14:02:18)
Difficulty: 2 of 5Under Testing Three Students (in Just Math)
Posted on 2013-11-20 (2 Comments)
Solution with reasonable assumptions by Jer (2013-11-20 12:11:51)
Difficulty: 3 of 5Under Michelangelo? (in Shapes)
Posted on 2013-11-18 (2 Comments)
Solution I spy by Jer (2013-11-19 09:14:38)
Difficulty: 3 of 5Under A Square, a Rectangle and a Triangle (in Geometry)
Posted on 2013-11-17 (3 Comments)
Just the answers, no derivation. by Jer (2013-11-18 15:50:43)
Difficulty: 3 of 5Under Define winning strategy (in Games)
Posted on 2013-11-14 (6 Comments)
It's complicated by Jer (2013-11-15 16:09:10)
Solution How to win. by Jer (2013-11-15 09:08:43)
Difficulty: 5 of 5Under Collinear and Equal Angles (in Geometry)
Posted on 2013-11-09 (5 Comments)
Some Thoughts Specific case. Almost full solution by Jer (2013-11-12 09:53:12)
Difficulty: 3 of 5Under Dart Discharge (in Logic)
Posted on 2013-11-07 (2 Comments)
Logical solution. by Jer (2013-11-07 15:32:49)
Difficulty: 2 of 5Under Four Digits (in Numbers)
Posted on 2013-11-05 (4 Comments)
re(2): computer solution --- KUDOS by Jer (2013-11-05 15:47:41)
Difficulty: 3 of 5Under Quadratic Quandary (in Just Math)
Posted on 2013-11-04 (6 Comments)
Solution re: approximate - exact by Jer (2013-11-04 15:49:37)
Solution approximate by Jer (2013-11-04 15:43:48)
Difficulty: 3 of 5Under Two ways (in Just Math)
Posted on 2013-10-31 (2 Comments)
Solution Solution by Jer (2013-11-01 08:18:40)
Difficulty: 1 of 5Under End Breadth (in Science)
Posted on 2013-10-29 (1 Comments)
form vs function by Jer (2013-10-29 14:52:14)
Difficulty: 3 of 5Under Forty-five Product (in Just Math)
Posted on 2013-10-28 (2 Comments)
Solution Solution by Jer (2013-10-28 15:05:15)
Difficulty: 2 of 5Under In and Out (in Geometry)
Posted on 2013-10-24 (2 Comments)
Solution Two more complicated proofs. by Jer (2013-10-25 09:10:13)
Solution Proof by Jer (2013-10-24 14:19:49)
Difficulty: 2 of 5Under Sum of Cubes (in Numbers)
Posted on 2013-10-23 (5 Comments)
re: No Subject by Jer (2013-10-26 00:10:59)
Difficulty: 2 of 5Under Knaves! 2 (in Liars and Knights)
Posted on 2013-10-22 (1 Comments)
Solution Easy but interesting solution. by Jer (2013-10-22 13:49:12)
Difficulty: 2 of 5Under Five by Five (in Numbers)
Posted on 2013-10-21 (2 Comments)
re: modular solution by Jer (2013-10-22 13:54:30)
Difficulty: 2 of 5Under Just prove it (in Just Math)
Posted on 2013-10-20 (4 Comments)
Some Thoughts Musing on possible lines of attack by Jer (2013-10-23 08:55:08)
Difficulty: 2 of 5Under DoDeCaGon (in Shapes)
Posted on 2013-10-18 (4 Comments)
re: No Subject by Jer (2013-10-18 10:56:29)
Difficulty: 3 of 5Under No multiplication allowed (in Numbers)
Posted on 2013-10-17 (8 Comments)
Not the way you intended. by Jer (2013-10-17 15:48:58)
Difficulty: 1 of 5Under Trigo computation (in Numbers)
Posted on 2013-10-11 (1 Comments)
Not exactly D1 solution by Jer (2013-10-11 16:49:43)
Difficulty: 2 of 5Under Quintic Expression (in Just Math)
Posted on 2013-10-09 (8 Comments)
More evidence. by Jer (2013-10-10 11:44:04)
Easy way out by Jer (2013-10-09 11:39:22)
Difficulty: 2 of 5Under Restore from scratches (in Numbers)
Posted on 2013-10-08 (2 Comments)
In retrospect - spoiler by Jer (2013-10-08 13:57:09)
Difficulty: 3 of 5Under Powering (in Just Math)
Posted on 2013-10-05 (5 Comments)
re: this does it by Jer (2013-10-08 09:45:05)
re: possible solution by Jer (2013-10-07 09:59:24)
Difficulty: 3 of 5Under Feisty Fifty-six (in Just Math)
Posted on 2013-10-04 (5 Comments)
Solution By hand method by Jer (2013-10-04 16:11:41)
Difficulty: 2 of 5Under Non existing altitudes (in Geometry)
Posted on 2013-10-03 (4 Comments)
Some Thoughts extension: Altitude inequality. by Jer (2013-10-04 09:13:46)
Solution My (slightly different) way by Jer (2013-10-04 09:07:31)
Difficulty: 3 of 5Under Listing cubes (in Numbers)
Posted on 2013-10-01 (3 Comments)
Some Thoughts A start by Jer (2013-10-01 14:15:42)
Difficulty: 3 of 5Under Warm/Cool Number Guessing (in Numbers)
Posted on 2013-09-30 (6 Comments)
re: How does the game end? by Jer (2013-10-02 13:09:12)
re: A limit by Jer (2013-10-01 15:55:08)
Difficulty: 3 of 5Under Rhomboctagon (in Geometry)
Posted on 2013-09-28 (1 Comments)
Solution Solutions by Jer (2013-09-28 15:44:39)
Difficulty: 3 of 5Under Shared Vertex (in Geometry)
Posted on 2013-09-25 (1 Comments)
Solution Coordinatized Solution by Jer (2013-09-27 10:16:15)
Difficulty: 2 of 5Under Four Cards (in Logic)
Posted on 2013-09-20 (3 Comments)
Solution Solution by Jer (2013-09-20 10:15:33)
Difficulty: 3 of 5Under Big areas (in Numbers)
Posted on 2013-09-17 (16 Comments)
re: att: Charlie by Jer (2013-09-18 11:31:48)
Difficulty: 3 of 5Under Nominal Expression Sum (in Just Math)
Posted on 2013-09-17 (4 Comments)
Solution Full solution by Jer (2013-09-17 10:21:15)
Difficulty: 2 of 5Under Subscript Substitution (in Just Math)
Posted on 2013-09-16 (1 Comments)
Solution Spoiler and commentary by Jer (2013-09-16 13:59:00)
Difficulty: 3 of 5Under Score Degree Deduction (in Just Math)
Posted on 2013-09-14 (1 Comments)
Solution No Subject by Jer (2013-09-14 13:14:44)
Difficulty: 2 of 5Under Mysterious Sequence (in Sequences)
Posted on 2013-09-11 (3 Comments)
Hints/Tips Very strong hints by Jer (2013-09-11 12:28:20)
Difficulty: 3 of 5Under Different Routes (in Logic)
Posted on 2013-09-09 (2 Comments)
Simplified solution by Jer (2013-09-09 14:12:50)
Difficulty: 2 of 5Under Sum of Chords (in Geometry)
Posted on 2013-09-07 (1 Comments)
Solution Solution by Jer (2013-09-07 13:30:53)
Difficulty: 2 of 5Under Two top targets (in Numbers)
Posted on 2013-09-06 (2 Comments)
Solution Solution by Jer (2013-09-06 10:45:10)
Difficulty: 4 of 5Under Expression Ratio (in Just Math)
Posted on 2013-09-03 (4 Comments)
Solution re: Method Finished by Jer (2013-09-04 13:57:20)
Method by Jer (2013-09-04 13:28:20)
Difficulty: 2 of 5Under NegaFibo series (in Numbers)
Posted on 2013-08-29 (2 Comments)
Solution Solution by Jer (2013-08-29 13:57:50)
Difficulty: 3 of 5Under Dodecagonal Diagonals (in Shapes)
Posted on 2013-08-22 (1 Comments)
Solution Solution by Jer (2013-08-23 20:17:56)
Difficulty: 3 of 5Under Tread Ware (in General)
Posted on 2013-08-20 (4 Comments)
Max dist, no plan. by Jer (2013-08-20 11:19:35)
Difficulty: 2 of 5Under Rectangle to Square (in Geometry)
Posted on 2013-08-13 (9 Comments)
re(2): Full solution by Jer (2013-08-15 18:05:40)
Solution Full solution by Jer (2013-08-15 13:12:13)
Solution One way by Jer (2013-08-13 14:47:52)
Difficulty: 3 of 5Under Squarely Sorted (in Numbers)
Posted on 2013-07-27 (4 Comments)
re: answer with proof / neater & corrected by Jer (2013-07-27 14:14:38)
Difficulty: 3 of 5Under Prince Rupert's Tetrahedron (in Shapes)
Posted on 2013-07-21 (1 Comments)
2-d solution by Jer (2013-07-27 14:36:39)
Difficulty: 1 of 5Under Simple Thinking (in Numbers)
Posted on 2013-07-09 (2 Comments)
Solution Simple answer by Jer (2013-07-09 11:06:05)
Difficulty: 3 of 5Under Parallelogram Requirement (in Geometry)
Posted on 2013-07-07 (1 Comments)
Solution Proof. No picture. by Jer (2013-07-09 11:00:04)
Difficulty: 3 of 5Under Concyclic Points of Tangency (in Geometry)
Posted on 2013-07-02 (2 Comments)
Solution Solution by Jer (2013-07-04 01:27:18)
Difficulty: 2 of 5Under Digital Factorial (in Numbers)
Posted on 2013-07-01 (2 Comments)
Solution One way to reach a solution. by Jer (2013-07-01 11:20:38)
Difficulty: 4 of 5Under My uncle's habits (in Probability)
Posted on 2013-06-28 (4 Comments)
First two days manually by Jer (2013-06-29 15:03:34)
Difficulty: 3 of 5Under Words, words, numbers (in Word Problems)
Posted on 2013-06-21 (2 Comments)
re: computer findings by Jer (2013-06-23 00:47:15)
Difficulty: 3 of 5Under Three Bricklayers (in Just Math)
Posted on 2013-06-21 (4 Comments)
re: answer - spoiler - better answer by Jer (2013-06-21 12:38:50)
Difficulty: 3 of 5Under Shiny Numbers (in Just Math)
Posted on 2013-06-20 (6 Comments)
First steps to proof by Jer (2013-06-21 10:05:40)
Difficulty: 2 of 5Under Any others? (in Numbers)
Posted on 2013-06-18 (9 Comments)
re(4): Solution - flaw? by Jer (2013-06-19 23:20:07)
re: Solution - flaw? by Jer (2013-06-18 18:15:33)
Solution by Jer (2013-06-18 12:11:52)
Difficulty: 3 of 5Under Four Equal Triangles (in Geometry)
Posted on 2013-06-16 (3 Comments)
re(2): Solution by Jer (2013-06-17 15:13:56)
Solution by Jer (2013-06-16 22:34:58)
Difficulty: 3 of 5Under Divisibility of N (in Numbers)
Posted on 2013-06-15 (3 Comments)
re: No Subject by Jer (2013-06-15 19:14:50)
Difficulty: 4 of 5Under Lion and Tamer (in Logic)
Posted on 2013-06-10 (7 Comments)
Outsmarting the tamer by Jer (2013-06-11 14:22:02)
Difficulty: 2 of 5Under Adjacent Square Sum II (in Just Math)
Posted on 2013-06-10 (5 Comments)
More generalizations of the algebra by Jer (2013-06-10 15:28:26)
The algebra by Jer (2013-06-10 14:15:21)
Difficulty: 3 of 5Under Divisibility and Digit Sum (in Just Math)
Posted on 2013-06-07 (8 Comments)
re(2): Solution by Jer (2013-06-07 13:39:37)
Solution Solution by Jer (2013-06-07 10:25:26)
Difficulty: 1 of 5Under B & G (in Logic)
Posted on 2013-06-03 (1 Comments)
Solution Solution by Jer (2013-06-03 12:52:49)
Difficulty: 3 of 5Under Mean Distance Two Points (in Shapes)
Posted on 2013-06-01 (8 Comments)
re(3): Part 2 in two different ways. by Jer (2013-06-02 11:59:58)
Part 2 in two different ways. by Jer (2013-06-02 01:10:39)
Difficulty: 2 of 5Under Strings of Nines (in Numbers)
Posted on 2013-05-29 (2 Comments)
re: a d1 answer (+background) by Jer (2013-05-29 12:37:31)
Difficulty: 3 of 5Under High Scorer (in General)
Posted on 2013-05-21 (11 Comments)
Diagonal line. by Jer (2013-05-22 12:41:25)
Solution Solution by Jer (2013-05-21 15:41:58)
Difficulty: 2 of 5Under Simple expression but difficult answer (in Just Math)
Posted on 2013-05-21 (2 Comments)
Solution Long algebra solution by Jer (2013-05-21 14:11:23)
Difficulty: 2 of 5Under Adjacent Square Sum (in Just Math)
Posted on 2013-05-20 (3 Comments)
Solution Easy way by Jer (2013-05-20 12:29:32)
Difficulty: 3 of 5Under Divisibility of 29 (in Numbers)
Posted on 2013-05-15 (4 Comments)
Some Thoughts A curious and interesting number. by Jer (2013-05-21 15:53:26)
Solution Rest of solution by Jer (2013-05-15 12:40:39)
Some Thoughts Solutions I can find (partial solution) by Jer (2013-05-15 12:25:00)
Difficulty: 2 of 5Under Distance to Diagonal (in Geometry)
Posted on 2013-05-14 (6 Comments)
re: Typo in problem statement by Jer (2013-05-16 00:38:14)
re: Simple Trigonometry (spoiler) by Jer (2013-05-14 16:01:20)
Difficulty: 2 of 5Under Diophantine Equation (in Just Math)
Posted on 2013-05-14 (1 Comments)
Solution This should work by Jer (2013-05-14 12:45:34)
Difficulty: 3 of 5Under Lovely Fibonacci (in Just Math)
Posted on 2013-05-11 (2 Comments)
Question Counterexamples by Jer (2013-05-13 13:54:05)
Difficulty: 2 of 5Under Four Reals (in Numbers)
Posted on 2013-05-10 (1 Comments)
Easy way by Jer (2013-05-10 12:05:59)
Difficulty: 3 of 5Under Triangle from Perimeter (in Geometry)
Posted on 2013-05-04 (3 Comments)
Didn't solve fully but interesting result. by Jer (2013-05-09 13:10:44)
Difficulty: 2 of 5Under Colorful Win (in Games)
Posted on 2013-05-02 (4 Comments)
Solution Another try by Jer (2013-05-03 11:21:21)
Some Thoughts Move-counter move by Jer (2013-05-02 13:52:11)
Difficulty: 3 of 5Under Generalize (in Numbers)
Posted on 2013-05-01 (5 Comments)
Question Can you prove it? by Jer (2013-05-02 09:22:50)
Difficulty: 2 of 5Under Three in, one out (in Just Math)
Posted on 2013-04-29 (5 Comments)
I've done something wrong. by Jer (2013-04-29 14:04:46)
Difficulty: 2 of 5Under Fifthing the quart (in Just Math)
Posted on 2013-04-28 (2 Comments)
Some Thoughts Some (all?) by Jer (2013-05-01 15:00:18)
Difficulty: 3 of 5Under Dark Divisibility (in Just Math)
Posted on 2013-04-27 (18 Comments)
re(2): Infinite examples, no proof yet. by Jer (2013-04-29 12:49:14)
Some Thoughts Infinite examples, no proof yet. by Jer (2013-04-28 12:41:10)
Difficulty: 2 of 5Under Equaliteral Triangle Division (in Shapes)
Posted on 2013-04-25 (5 Comments)
re: I can do this! (spoiler) by Jer (2013-04-29 12:55:44)
Difficulty: 2 of 5Under Winning Chance (in Probability)
Posted on 2013-04-24 (3 Comments)
Solution by Jer (2013-04-24 12:17:02)
Difficulty: 3 of 5Under Circular Billiards Table (in Geometry)
Posted on 2013-04-23 (6 Comments)
re(2): Playing with Geometers' Sketchpad -- a method by Jer (2013-04-24 12:49:34)
Difficulty: 3 of 5Under 2012 sum Digit (in Just Math)
Posted on 2013-04-23 (4 Comments)
re: Grade inflation by Jer (2013-04-23 13:32:31)
Difficulty: 3 of 5Under Non-arithmetic Triplets (in General)
Posted on 2013-04-08 (9 Comments)
re(3): Counting Up by Jer (2013-04-09 00:46:52)
Some Thoughts re: Counting Up by Jer (2013-04-08 16:01:02)
Difficulty: 2 of 5Under Area of hexagon... (in Geometry)
Posted on 2013-04-06 (1 Comments)
A start. by Jer (2013-04-09 15:29:03)
Difficulty: 3 of 5Under Neat Network II (in General)
Posted on 2013-04-05 (4 Comments)
A good browse. by Jer (2013-04-05 22:10:41)
Difficulty: 2 of 5Under Mission impossible (in Just Math)
Posted on 2013-04-03 (5 Comments)
re(2): Not achieved (spoiler)......hinting by Jer (2013-04-03 13:23:24)
Solution Not achieved (spoiler) by Jer (2013-04-03 11:32:42)
Difficulty: 1 of 5Under Finding Average (in Logic)
Posted on 2013-04-01 (9 Comments)
re(2): D1 says ultimate simplicity. by Jer (2013-04-02 11:14:59)
Solution One solution (and a simple variation) by Jer (2013-04-01 11:22:19)
Difficulty: 3 of 5Under Pentagon Ratio (in Shapes)
Posted on 2013-03-30 (2 Comments)
Solution Solution. by Jer (2013-04-01 13:06:07)
Difficulty: 3 of 5Under Mileage Muse (in Numbers)
Posted on 2013-03-26 (7 Comments)
re(2): Part 1 with no reset by Jer (2013-03-27 08:03:16)
A solution for 2 (button pressing) by Jer (2013-03-26 14:08:40)
Part 1 with no reset by Jer (2013-03-26 12:49:55)
re: Part 1 only by Jer (2013-03-26 12:37:12)
Difficulty: 3 of 5Under Conga Primes (in Numbers)
Posted on 2013-03-23 (11 Comments)
Are there solutions? by Jer (2013-03-25 22:08:49)
Difficulty: 3 of 5Under So many ways.... (in Numbers)
Posted on 2013-03-21 (3 Comments)
Some short answers by Jer (2013-03-21 14:55:59)
Difficulty: 3 of 5Under Equal Segments (in Geometry)
Posted on 2013-03-20 (2 Comments)
Solution Solution by Jer (2013-03-20 22:18:31)
Difficulty: 2 of 5Under Inequality challenged (in Just Math)
Posted on 2013-03-19 (1 Comments)
Solution I think I got it. by Jer (2013-03-20 12:54:06)
Difficulty: 3 of 5Under Four Coin Theorem (in Shapes)
Posted on 2013-03-17 (2 Comments)
Some Thoughts Almost there by Jer (2013-03-18 12:32:26)
Difficulty: 3 of 5Under Homophones Misrepresented (in Word Problems)
Posted on 2013-03-06 (3 Comments)
No Subject by Jer (2013-03-07 09:19:46)
Difficulty: 3 of 5Under Ceiling and Floor Formulation (in Algorithms)
Posted on 2013-03-04 (6 Comments)
re(2): Solution? by Jer (2013-03-04 23:12:21)
Solution Solution? by Jer (2013-03-04 14:46:40)
Difficulty: 2 of 5Under Math spelling (in Word Problems)
Posted on 2013-03-04 (9 Comments)
re: Quick guess and some other ideas. by Jer (2013-03-04 12:21:04)
Difficulty: 3 of 5Under Intriguing Integral Illation (in Calculus)
Posted on 2013-03-02 (6 Comments)
Solution exact solution another way by Jer (2013-03-03 23:10:34)
Partial answer - solution later by Jer (2013-03-03 02:28:51)
Difficulty: 3 of 5Under Quarting the cube (in Just Math)
Posted on 2013-02-28 (6 Comments)
Solution - no cube spotted by Jer (2013-03-01 09:22:59)
Difficulty: 3 of 5Under Geometric Generalization (in Probability)
Posted on 2013-02-28 (6 Comments)
Corrected solution by Jer (2013-02-28 11:30:27)
Solution and most of bonus by Jer (2013-02-28 10:54:38)
Difficulty: 3 of 5Under Touching polygons (in Shapes)
Posted on 2013-02-27 (5 Comments)
re: Triangular reply (partial spoiler by Jer (2013-02-28 11:45:25)
Difficulty: 3 of 5Under Liar Lock (in Liars and Knights)
Posted on 2013-02-26 (5 Comments)
Unorthodox Solution by Jer (2013-02-26 12:28:12)
Difficulty: 2 of 5Under Magical Magician (in Numbers)
Posted on 2013-02-23 (6 Comments)
re(2): Simplest w r o n g...answer by Jer (2013-02-23 16:41:21)
Simplest answer by Jer (2013-02-23 13:51:54)
Difficulty: 3 of 5Under Point to 2013 (2) (in Just Math)
Posted on 2013-02-22 (2 Comments)
Outline of analytic solution by Jer (2013-02-23 17:06:46)
Difficulty: 3 of 5Under Reasonable Root ? (in Just Math)
Posted on 2013-02-17 (2 Comments)
Seems to me... by Jer (2013-02-17 19:19:06)
Difficulty: 3 of 5Under Composite Contemplation (in Just Math)
Posted on 2013-02-16 (3 Comments)
re: spoiler by Jer (2013-02-17 22:13:01)
Difficulty: 3 of 5Under Triangle Perimeters (in Shapes)
Posted on 2013-02-13 (6 Comments)
Poor wording by Jer (2013-02-14 09:10:56)
re: Resist by Jer (2013-02-13 23:14:04)
Difficulty: 3 of 5Under Fifteen Frolic (in Games)
Posted on 2013-02-12 (2 Comments)
Mimimum moves (computer aided) by Jer (2013-02-15 11:42:51)
First part by Jer (2013-02-15 11:19:22)
Difficulty: 3 of 5Under Cans in a cooler (in Shapes)
Posted on 2013-02-11 (3 Comments)
An interactive Wolfram Demonstration by Jer (2016-08-04 22:10:34)
A picture by Jer (2013-02-13 13:01:31)
Difficulty: 3 of 5Under Consecutive Contemplation II (in Sequences)
Posted on 2013-02-10 (2 Comments)
An example by Jer (2013-02-11 14:58:35)
A guess by Jer (2013-02-11 14:49:11)
Difficulty: 3 of 5Under Commemorations (in Weights and Scales)
Posted on 2013-02-06 (7 Comments)
re: A misread? by Jer (2013-02-06 23:04:42)
Difficulty: 3 of 5Under A false claim (in Numbers)
Posted on 2013-02-05 (2 Comments)
Interesting by Jer (2013-02-06 12:33:29)
Difficulty: 3 of 5Under Midpoint problem (in Geometry)
Posted on 2013-02-03 (2 Comments)
re: Some thoughts / tediousness by Jer (2013-02-04 13:48:42)
Difficulty: 2 of 5Under Geometric Parabola (in Geometry)
Posted on 2013-02-02 (6 Comments)
re(4): A note about the problem. by Jer (2013-02-04 16:25:40)
re(2): A note about the problem. by Jer (2013-02-03 19:40:35)
A note about the problem. by Jer (2013-02-03 01:17:48)
Solution Calculus solution by Jer (2013-02-03 01:12:43)
Difficulty: 3 of 5Under Arrangements count (in Just Math)
Posted on 2013-01-31 (2 Comments)
Essentially by Jer (2013-01-31 16:45:38)
Difficulty: 3 of 5Under Cubing the square (in Just Math)
Posted on 2013-01-30 (8 Comments)
Solution found y, got bonus by Jer (2013-01-30 14:51:54)
x, not y but some thoughts by Jer (2013-01-30 14:33:57)
Difficulty: 2 of 5Under Planetary Perception (in Word Problems)
Posted on 2013-01-30 (14 Comments)
Last one. by Jer (2013-01-30 15:28:02)
Difficulty: 3 of 5Under Group Endeavor (in General)
Posted on 2013-01-29 (8 Comments)
Solution Deductions and a careful reading. by Jer (2013-01-29 15:12:40)
Difficulty: 3 of 5Under The 73rd digit (in Numbers)
Posted on 2013-01-29 (3 Comments)
Solution Solution with D1 explanation by Jer (2013-01-29 12:22:18)
Difficulty: 2 of 5Under Greetings from P (in Sequences)
Posted on 2013-01-24 (5 Comments)
re(2): P is for what? by Jer (2013-01-25 09:18:28)
Solution P is for what? by Jer (2013-01-24 16:52:10)
Difficulty: 1 of 5Under Penny Drop (in Science)
Posted on 2013-01-17 (6 Comments)
Eureka! by Jer (2013-01-17 16:37:32)
Difficulty: 2 of 5Under A chain of odds (in Numbers)
Posted on 2013-01-11 (2 Comments)
Solution Interesting cube by Jer (2013-01-11 13:58:41)
Difficulty: 3 of 5Under Point to 2013 (in Just Math)
Posted on 2013-01-09 (7 Comments)
re(2): With computer by Jer (2013-01-09 13:40:49)
Difficulty: 3 of 5Under Square from four points (in Geometry)
Posted on 2013-01-08 (5 Comments)
When it's not possible. by Jer (2013-01-10 11:27:52)
Some Thoughts Analytic beginning. by Jer (2013-01-09 13:48:50)
Difficulty: 2 of 5Under Triple 8 (in Numbers)
Posted on 2013-01-08 (9 Comments)
re(4): Observation by Jer (2013-01-11 14:01:08)
re(2): Observation by Jer (2013-01-10 13:42:14)
Observation by Jer (2013-01-08 12:49:12)
Difficulty: 3 of 5Under Fifth powers (in Just Math)
Posted on 2013-01-06 (8 Comments)
re(2): Assuming... by Jer (2013-01-07 12:53:05)
re: my way by Jer (2013-01-07 12:45:56)
Solution Assuming... by Jer (2013-01-06 19:04:30)
Difficulty: 3 of 5Under Die Order (in Probability)
Posted on 2013-01-04 (7 Comments)
Solution by Jer (2013-01-04 14:02:54)
Difficulty: 2 of 5Under Accurate Association (in Logic)
Posted on 2013-01-03 (3 Comments)
Solution A solution by Jer (2013-01-03 11:03:12)
Difficulty: 3 of 5Under Divisibility of factorials II (in Numbers)
Posted on 2013-01-01 (2 Comments)
Some Thoughts n=5 like part 1 by Jer (2013-01-02 13:40:19)
Difficulty: 3 of 5Under Divisibility of factorials (in Numbers)
Posted on 2012-12-29 (1 Comments)
Some Thoughts A start. by Jer (2012-12-29 23:32:15)
Difficulty: 3 of 5Under Perpendicular (in Geometry)
Posted on 2012-12-26 (5 Comments)
Solution Very short version of analytic solution by Jer (2012-12-26 23:49:36)
Difficulty: 2 of 5Under Dollars and Cents II (in Just Math)
Posted on 2012-12-19 (5 Comments)
re(2): No brute force solution by Jer (2012-12-20 11:50:56)
Solution No brute force solution by Jer (2012-12-19 14:04:32)
Difficulty: 3 of 5Under Five Fives Fancy Formula (in Just Math)
Posted on 2012-12-17 (4 Comments)
re: another form of the answer - nope by Jer (2012-12-18 13:59:18)
Difficulty: 3 of 5Under Ratio Resolution III (in Weights and Scales)
Posted on 2012-12-14 (2 Comments)
alternate solution by Jer (2012-12-14 16:10:35)
Difficulty: 2 of 5Under Exp=log (in Just Math)
Posted on 2012-12-12 (9 Comments)
re(3): possible solution--correction by Jer (2012-12-13 11:13:02)
Difficulty: 3 of 5Under Subtractive years (in Numbers)
Posted on 2012-12-12 (6 Comments)
Millennial question by Jer (2012-12-13 10:57:17)
By calculator program by Jer (2012-12-12 12:35:15)
Difficulty: 2 of 5Under Go count (in Numbers)
Posted on 2012-12-11 (6 Comments)
Solution Solution by Jer (2012-12-11 12:59:39)
Difficulty: 3 of 5Under My new sequence (in Sequences)
Posted on 2012-12-08 (5 Comments)
Hint. by Jer (2012-12-09 20:41:35)
Difficulty: 3 of 5Under Pyramid Maneuver (in Geometry)
Posted on 2012-12-06 (4 Comments)
re(2): No trig soluiton by Jer (2012-12-10 13:51:01)
Solution No trig soluiton by Jer (2012-12-07 11:44:59)
Difficulty: 2 of 5Under GCD of Fibonacci (in Numbers)
Posted on 2012-12-06 (2 Comments)
Solution Is it this simple? by Jer (2012-12-06 10:41:31)
Difficulty: 2 of 5Under One equation with nine unknowns! (2) (in Numbers)
Posted on 2012-12-05 (3 Comments)
re: computer solution by Jer (2012-12-05 12:49:10)
Difficulty: 2 of 5Under Two Dominoes (in Probability)
Posted on 2012-12-04 (1 Comments)
Solution Solution by Jer (2012-12-04 13:10:45)
Difficulty: 3 of 5Under Intersection of Bisectors (in Geometry)
Posted on 2012-12-01 (2 Comments)
Proof. by Jer (2012-12-03 13:56:48)
From sketchpad. No proof. by Jer (2012-12-03 13:10:40)
Difficulty: 2 of 5Under Twelve Period Tease (in Just Math)
Posted on 2012-11-30 (5 Comments)
re: This may be right (Why it isn't.) by Jer (2012-12-01 00:35:54)
Solution This may be right by Jer (2012-11-30 11:11:06)
Difficulty: 1 of 5Under A square is a cube (in Numbers)
Posted on 2012-11-29 (2 Comments)
Answer by Jer (2012-11-29 11:27:27)
Difficulty: 3 of 5Under Ratio Resolution II (in Just Math)
Posted on 2012-11-24 (3 Comments)
Solution I think I got it. by Jer (2012-11-25 00:03:57)
Difficulty: 3 of 5Under 5 partitions (in Just Math)
Posted on 2012-11-21 (3 Comments)
Solution By hand by Jer (2012-11-21 13:19:35)
Difficulty: 3 of 5Under Corner Commencement (in Word Problems)
Posted on 2012-11-19 (2 Comments)
Solution Solution by Jer (2012-11-19 12:26:19)
Difficulty: 3 of 5Under Peculiar pentagon (in Geometry)
Posted on 2012-11-15 (1 Comments)
Solution General Proof by Jer (2012-11-15 11:09:03)
Difficulty: 3 of 5Under 2-way traffic (in Word Problems)
Posted on 2012-11-14 (7 Comments)
I Palindrome I by Jer (2012-11-14 12:51:27)
Difficulty: 3 of 5Under Consecutive Contemplation (in Numbers)
Posted on 2012-11-08 (6 Comments)
Not proven yet but I have a guess by Jer (2012-11-08 16:35:18)
Difficulty: 3 of 5Under Missing digit (in General)
Posted on 2012-11-03 (3 Comments)
A link by Jer (2012-11-03 22:20:22)
Difficulty: 3 of 5Under Vampire numbers (in Just Math)
Posted on 2012-10-31 (3 Comments)
Year in vampire number or fang? by Jer (2012-10-31 12:28:28)
Difficulty: 3 of 5Under Exploring HCNs (in Numbers)
Posted on 2012-10-26 (5 Comments)
An idea for 4. by Jer (2012-10-26 16:22:26)
Difficulty: 1 of 5Under Store Survey (in Just Math)
Posted on 2012-10-16 (2 Comments)
Solution Another way to think about it (spoiler) by Jer (2012-10-17 12:33:53)
Difficulty: 2 of 5Under A flawed proof? (2) (in Tricks)
Posted on 2012-09-27 (3 Comments)
Solution You can't do that by Jer (2012-09-27 10:48:59)
Difficulty: 3 of 5Under A Pythagorean piglet (in Just Math)
Posted on 2012-09-22 (4 Comments)
re(2): Oinking solution. by Jer (2012-09-26 12:41:34)
Solution Oinking solution. by Jer (2012-09-25 16:17:25)
Difficulty: 2 of 5Under Though this be madness, yet there is method in it... (in Numbers)
Posted on 2012-09-20 (6 Comments)
re: Solution by Jer (2012-09-20 22:34:50)
Difficulty: 3 of 5Under A productive s.o.d. (in Just Math)
Posted on 2012-09-19 (5 Comments)
re: A start by Jer (2012-09-20 14:00:47)
A start by Jer (2012-09-19 18:34:53)
Difficulty: 3 of 5Under Boxing Baffle (in Logic)
Posted on 2012-09-12 (4 Comments)
re: computer solution by Jer (2012-09-13 10:54:15)
Difficulty: 2 of 5Under 440 (in Tricks)
Posted on 2012-09-10 (12 Comments)
re: Time Solution by Jer (2012-09-11 12:29:27)
Difficulty: 3 of 5Under Complex Conclusion (in Just Math)
Posted on 2012-08-29 (6 Comments)
re(2): Playing around on the complex plane. by Jer (2012-08-31 15:48:56)
Some Thoughts Playing around on the complex plane. by Jer (2012-08-30 16:20:59)
Solution Solution by Jer (2012-08-29 13:57:00)
Difficulty: 3 of 5Under Floor and Absolute (in Calculus)
Posted on 2012-08-17 (2 Comments)
Solution? by Jer (2012-08-17 14:08:37)
Difficulty: 3 of 5Under Timely determination II (in Just Math)
Posted on 2012-07-13 (4 Comments)
Solution One way by Jer (2012-07-13 11:25:46)
Difficulty: 4 of 5Under Circle in a Prism (in Shapes)
Posted on 2012-06-30 (2 Comments)
n=3 and n=large by Jer (2012-07-01 14:27:19)
n=4 (the easy one) by Jer (2012-07-01 00:29:51)
Difficulty: 2 of 5Under One is k times the other (in Numbers)
Posted on 2012-06-25 (7 Comments)
Some Thoughts Possible solution by Jer (2012-06-25 12:12:57)
Difficulty: 1 of 5Under Equal digits (in Numbers)
Posted on 2012-06-11 (7 Comments)
re(2): Solution (spoiler) Base 12 error by Jer (2012-06-13 12:56:05)
Difficulty: 3 of 5Under Irrational to Rational (in Just Math)
Posted on 2012-06-09 (2 Comments)
Some Thoughts Two possible n by Jer (2012-06-11 12:31:26)
Difficulty: 1 of 5Under Fruit prices (in Word Problems)
Posted on 2012-06-05 (8 Comments)
Solution A semi-sensible solution by Jer (2012-06-05 13:14:29)
Difficulty: 3 of 5Under Concylic Feet Part 2 (in Geometry)
Posted on 2012-05-24 (2 Comments)
Observations by Jer (2012-05-24 14:05:14)
Difficulty: 3 of 5Under Prefix Precision (in Word Problems)
Posted on 2012-05-23 (3 Comments)
All but #3 by Jer (2012-05-23 12:24:46)
Difficulty: 3 of 5Under Triangular Crease 789 (in Shapes)
Posted on 2012-05-20 (7 Comments)
Some Thoughts re: 6 solutions (unverified) Only 4 Work by Jer (2012-05-22 14:06:47)
6 solutions (unverified) by Jer (2012-05-22 13:24:41)
re: Geometer's Sketchpad Solution by Jer (2012-05-21 13:52:24)
Solution Algebra solution by Jer (2012-05-21 13:41:55)
Difficulty: 3 of 5Under A Prime Triplet (in Numbers)
Posted on 2012-05-19 (5 Comments)
Question re: Prime solution (?'s) by Jer (2012-05-19 23:21:10)
Difficulty: 3 of 5Under Ready, action…,CUT! (in Geometry)
Posted on 2012-05-16 (19 Comments)
re(5): Here's a picture -in fact two with links by Jer (2012-05-18 08:59:51)
Trying another picture by Jer (2012-05-18 00:45:09)
Solution Here's a picture. by Jer (2012-05-16 23:06:41)
re(2): Solution by Jer (2012-05-16 13:27:58)
Pythagorean by Jer (2012-05-16 11:04:00)
Difficulty: 3 of 5Under Last 2007 digits (in Just Math)
Posted on 2012-05-12 (3 Comments)
A start by Jer (2012-05-14 09:05:33)
Difficulty: 1 of 5Under Doubtful Divisibility (in Tricks)
Posted on 2012-05-09 (3 Comments)
Error(s) spotted by Jer (2012-05-09 12:17:47)
Difficulty: 3 of 5Under Mirror, mirror (in Numbers)
Posted on 2012-05-04 (4 Comments)
A quick note and some Links (spoilers) by Jer (2012-05-04 11:21:40)
Difficulty: 3 of 5Under Lean-to shelter (in Shapes)
Posted on 2012-05-03 (5 Comments)
Hints/Tips re: some thoughts (Clarification.) by Jer (2012-05-03 13:56:42)
Difficulty: 1 of 5Under A red herring marble (in Logic)
Posted on 2012-05-01 (1 Comments)
Solution One fish two fish red fish blue fish (solution) by Jer (2012-05-01 12:11:34)
Difficulty: 3 of 5Under Normal or not? (in Numbers)
Posted on 2012-04-29 (3 Comments)
I think... by Jer (2012-05-01 12:52:07)
Difficulty: 4 of 5Under Smart Trams (in Word Problems)
Posted on 2012-04-26 (8 Comments)
re(2): The two letter word(s?) by Jer (2012-04-27 22:23:35)
The two letter word(s?) by Jer (2012-04-27 10:46:05)
Difficulty: 4 of 5Under No comments (in General)
Posted on 2012-04-12 (3 Comments)
Hand solution by Jer (2012-04-13 11:03:07)
Difficulty: 3 of 5Under Four people II (in Logic)
Posted on 2012-04-11 (6 Comments)
Solution Solution with assumptions by Jer (2012-04-11 12:32:37)
Difficulty: 3 of 5Under Return to Treasure Island (in General)
Posted on 2012-04-05 (14 Comments)
Some Thoughts I've seen this before so just a hint... by Jer (2012-04-05 22:39:19)
Difficulty: 3 of 5Under Point to 2012 (in Just Math)
Posted on 2012-04-04 (7 Comments)
Explaining the arithmetic sequence. by Jer (2012-04-05 13:35:48)
Non computer solution (pretty much) by Jer (2012-04-04 13:38:30)
Difficulty: 3 of 5Under Identifiable Identities (in Cryptography)
Posted on 2012-03-31 (6 Comments)
Sorry I forgot to tell you. by Jer (2012-03-31 17:25:20)
Difficulty: 3 of 5Under Lengthy Word (in Word Problems)
Posted on 2012-03-29 (4 Comments)
re: Solution method by Jer (2012-03-30 14:52:23)
Difficulty: 3 of 5Under DO MAGIC (in Numbers)
Posted on 2012-03-27 (2 Comments)
Solution Got it. by Jer (2012-03-27 11:57:46)
Difficulty: 2 of 5Under From primes to palindrome (in Numbers)
Posted on 2012-03-24 (7 Comments)
Solution All solutions by Jer (2012-03-24 22:49:03)
Difficulty: 4 of 5Under I can see the origin from here. (in Calculus)
Posted on 2012-03-11 (2 Comments)
Part 4 still unsolved by Jer (2012-10-05 10:57:06)
Difficulty: 3 of 5Under Locus of Intersections (in Geometry)
Posted on 2012-03-09 (4 Comments)
re(2): Initital exploration by Jer (2012-03-10 00:34:58)
Initital exploration by Jer (2012-03-09 12:06:36)
Difficulty: 3 of 5Under Regular Tetrahedron 1234 (in Shapes)
Posted on 2012-03-08 (8 Comments)
re(2): Is it possible? by Jer (2012-03-10 00:39:08)
re(2): Is it possible? by Jer (2012-03-08 16:45:41)
Some Thoughts Is it possible? by Jer (2012-03-08 11:31:16)
Difficulty: 3 of 5Under A Cup Of Coffee II (in Weights and Scales)
Posted on 2012-03-06 (11 Comments)
How to get 8%? by Jer (2012-03-07 09:12:08)
Difficulty: 3 of 5Under Matchstick Frenzy II (in Just Math)
Posted on 2012-02-26 (6 Comments)
Solution General n pile solution with proof by Jer (2012-02-27 12:55:44)
Difficulty: 2 of 5Under S.o.d . of s.o.d ,,, (in Just Math)
Posted on 2012-02-21 (4 Comments)
Solution by Jer (2012-02-21 12:12:24)
Difficulty: 1 of 5Under Decimal base? Of course... (in Tricks)
Posted on 2012-02-13 (15 Comments)
Some Thoughts Well... by Jer (2012-02-13 12:18:10)
Difficulty: 3 of 5Under Boosted board (in General)
Posted on 2012-02-07 (11 Comments)
re: Final Answer ?? (spoiler) by Jer (2012-02-09 21:27:41)
re: Final Answer? (spoiler) by Jer (2012-02-09 10:47:34)
re: Shaky ground? You misunderstand. by Jer (2012-02-08 09:02:35)
Difficulty: 4 of 5Under Non - Zero Digit II (in Just Math)
Posted on 2012-02-05 (7 Comments)
re: No Subject by Jer (2012-02-07 12:29:20)
Question The previous two answers by Jer (2012-02-06 13:20:14)
Difficulty: 3 of 5Under Chess Tournament (in Logic)
Posted on 2012-02-03 (2 Comments)
Solution Spoiler solution. by Jer (2012-02-03 11:02:56)
Difficulty: 2 of 5Under Covering a rectangle by circles (in Shapes)
Posted on 2012-01-30 (6 Comments)
Thoughts by Jer (2012-01-30 12:33:57)
Difficulty: 3 of 5Under Simultaneous Settlement (in Just Math)
Posted on 2012-01-27 (8 Comments)
Solution Solution by Jer (2012-01-27 11:10:40)
Difficulty: 2 of 5Under Odd One Out II (in General)
Posted on 2012-01-25 (4 Comments)
2 Possible answers by Jer (2012-01-25 11:37:33)
Difficulty: 3 of 5Under Logical connectives (in Algorithms)
Posted on 2012-01-24 (6 Comments)
Solution Solution if I understand the logic of -> and by Jer (2012-01-24 13:58:26)
Difficulty: 3 of 5Under Yes and no (in Just Math)
Posted on 2012-01-21 (1 Comments)
musings by Jer (2012-01-22 02:00:19)
Difficulty: 3 of 5Under Isosceles from Regular (in Shapes)
Posted on 2012-01-20 (13 Comments)
re(2): Equilateral triangle are certainly isosceles. by Jer (2012-01-21 23:11:16)
Equilateral triangle are certainly isosceles. by Jer (2012-01-21 16:18:13)
re: Not sure if this is what you want - A rewrite. by Jer (2012-01-21 00:05:43)
Difficulty: 3 of 5Under 'W'here to Start (in Cryptography)
Posted on 2012-01-19 (3 Comments)
Some thoughts by Jer (2012-01-20 16:05:01)
Difficulty: 3 of 5Under Suffix Settlement (in Word Problems)
Posted on 2012-01-17 (8 Comments)
Some Thoughts All but the last by Jer (2012-01-17 11:16:22)
Difficulty: 2 of 5Under Sum Binary Digits (in Probability)
Posted on 2012-01-16 (2 Comments)
Solution Counting, hoping I didn't make a mistake. by Jer (2012-01-16 17:32:25)
Difficulty: 2 of 5Under Integer Forms (in Just Math)
Posted on 2012-01-07 (2 Comments)
Solution re: Some Observations (partial solution) / The rest by Jer (2012-01-07 20:29:52)
Difficulty: 3 of 5Under Multi-Birth Convention (in Numbers)
Posted on 2012-01-05 (1 Comments)
Solution I think this works. by Jer (2012-01-05 12:30:13)
Difficulty: 3 of 5Under More about 1729 (in Numbers)
Posted on 2012-01-04 (7 Comments)
re: computer solution by Jer (2012-01-04 13:43:55)
Solutions by Jer (2012-01-04 11:27:31)
Difficulty: 2 of 5Under A repunit number (in Numbers)
Posted on 2011-12-26 (5 Comments)
re: is there a mistake in the puzzle? by Jer (2011-12-26 11:29:12)
Solution Solution by Jer (2011-12-26 11:25:28)
Difficulty: 3 of 5Under Summing square inverses (in Just Math)
Posted on 2011-12-25 (2 Comments)
Solution Pen and paper solution by Jer (2011-12-25 17:23:09)
Difficulty: 4 of 5Under PentaWord 1 (in General)
Posted on 2011-12-14 (6 Comments)
Some Thoughts Probably not solved but a reasonable method by Jer (2011-12-14 11:06:10)
Difficulty: 1 of 5Under Not sexy! (in Just Math)
Posted on 2011-12-13 (1 Comments)
Work my way up by Jer (2011-12-13 10:56:07)
Difficulty: 3 of 5Under Orthogonal Conics (in Geometry)
Posted on 2011-12-10 (2 Comments)
A single case by Jer (2011-12-12 16:04:11)
Difficulty: 2 of 5Under Ones or twos (in Just Math)
Posted on 2011-12-07 (4 Comments)
re(2): Depends what natural numbers are. by Jer (2011-12-07 13:46:59)
Solution Depends what natural numbers are. by Jer (2011-12-07 11:02:43)
Difficulty: 3 of 5Under Four Point Polygons (in Probability)
Posted on 2011-12-06 (2 Comments)
Solution Almost trivial by Jer (2011-12-06 11:10:30)
Difficulty: 2 of 5Under Timely determination (in Just Math)
Posted on 2011-11-29 (2 Comments)
Hmm by Jer (2011-11-29 13:55:03)
Difficulty: 3 of 5Under Pandigital Multiple (in Probability)
Posted on 2011-11-25 (2 Comments)
Some Thoughts Base 10 by Jer (2011-11-28 16:09:30)
Some Thoughts Sometimes impossible, not nearly solved by Jer (2011-11-28 11:46:24)
Difficulty: 2 of 5Under Point to 2011 (in Just Math)
Posted on 2011-11-22 (2 Comments)
Solution .2011 by Jer (2011-11-22 11:05:43)
Difficulty: 3 of 5Under Platonic Colors (in Probability)
Posted on 2011-11-21 (1 Comments)
Solution Formula and solution. No derivation. by Jer (2011-11-21 16:13:44)
Difficulty: 3 of 5Under Proximo Ultimo Sum (in Sequences)
Posted on 2011-11-16 (5 Comments)
re: The easy way is turning out to be hard by Jer (2011-11-16 12:05:31)
The easy way is turning out to be hard by Jer (2011-11-16 11:22:03)
Difficulty: 3 of 5Under Frog Frolics (in Numbers)
Posted on 2011-11-15 (6 Comments)
Some more thoughts and more questions by Jer (2011-11-16 09:07:08)
Some thoughts and questions by Jer (2011-11-15 16:07:16)
Difficulty: 2 of 5Under Some relation! (in Just Math)
Posted on 2011-11-11 (10 Comments)
re: Solution by Jer (2011-11-11 16:25:44)
Difficulty: 3 of 5Under Momentous Multiple (in Numbers)
Posted on 2011-11-10 (2 Comments)
Some Thoughts Thoughts by Jer (2011-11-10 13:18:42)
Difficulty: 2 of 5Under Magic 46 (in Numbers)
Posted on 2011-11-03 (2 Comments)
Hints/Tips too easy by Jer (2011-11-03 11:26:52)
Difficulty: 3 of 5Under Looking for n (2) (in Numbers)
Posted on 2011-11-02 (1 Comments)
Solution Solution and a question/request by Jer (2011-11-02 10:56:13)
Difficulty: 3 of 5Under An extended harmony (in Just Math)
Posted on 2011-11-01 (5 Comments)
A lower bound and a stab at a solution by Jer (2011-11-01 10:37:54)
A simple upper bound by Jer (2011-11-01 10:19:57)
Difficulty: 2 of 5Under Sense of Discovery (in General)
Posted on 2011-10-31 (11 Comments)
pairs by Jer (2011-11-06 01:26:05)
Difficulty: 2 of 5Under Angle of view (in Just Math)
Posted on 2011-10-28 (2 Comments)
algebra solution by Jer (2011-10-28 13:42:03)
Difficulty: 3 of 5Under Going Maximum with Geometric (in Just Math)
Posted on 2011-10-21 (4 Comments)
Solution Analysis and solution by Jer (2011-10-21 16:20:27)
Difficulty: 3 of 5Under Last three digits (in Just Math)
Posted on 2011-10-19 (9 Comments)
re(4): two-thirds of a solution. by Jer (2011-10-19 16:02:29)
re(2): two-thirds of a solution. by Jer (2011-10-19 13:57:49)
two-thirds of a solution. by Jer (2011-10-19 11:08:01)
Difficulty: 1 of 5Under Three customers (in Logic)
Posted on 2011-10-17 (9 Comments)
Solution Im having waffles (solution) by Jer (2011-10-17 13:50:05)
Difficulty: 3 of 5Under 2011 Square End (in Just Math)
Posted on 2011-10-06 (3 Comments)
an inefficient method. by Jer (2011-10-07 12:28:20)
Difficulty: 3 of 5Under Multiply Digits, Get Quadratic (in Just Math)
Posted on 2011-10-05 (2 Comments)
Solution Different solution by Jer (2011-10-05 11:34:16)
Difficulty: 3 of 5Under Concerning combinatorics (in Numbers)
Posted on 2011-10-04 (7 Comments)
Some Thoughts 1 step further. by Jer (2011-10-05 10:53:14)
Difficulty: 2 of 5Under Two-digit numbers (in Sequences)
Posted on 2011-09-29 (4 Comments)
Solution I got it (spoiler.) by Jer (2011-09-29 13:20:14)
Difficulty: 2 of 5Under Telephone Number Travail (in Just Math)
Posted on 2011-09-28 (2 Comments)
Solution Solution by Jer (2011-09-28 11:12:07)
Difficulty: 2 of 5Under Surf City Semiprimes (in Numbers)
Posted on 2011-09-27 (4 Comments)
I don't think it's true. Maybe I do. by Jer (2011-09-27 11:13:57)
Difficulty: 3 of 5Under 1000 ways (in Numbers)
Posted on 2011-09-23 (5 Comments)
re: Making inside info public: Hint (credit to Jer) by Jer (2011-09-23 23:35:17)
Difficulty: 3 of 5Under Sum Month and Day II (in General)
Posted on 2011-09-20 (4 Comments)
part 3 and maybe 2 by Jer (2011-09-20 11:26:47)
Difficulty: 3 of 5Under 2011 Square Start (in Just Math)
Posted on 2011-09-16 (5 Comments)
A method by Jer (2011-09-16 12:45:25)
Difficulty: 3 of 5Under Lucky seven V (in Just Math)
Posted on 2011-09-13 (3 Comments)
Question Outline of non-computer solution by Jer (2011-09-14 11:03:47)
Difficulty: 2 of 5Under Five out of one (in Geometry)
Posted on 2011-09-06 (3 Comments)
Solution (almost) complete analysis by Jer (2011-09-06 13:01:30)
Difficulty: 3 of 5Under Factorial Remainder (in Just Math)
Posted on 2011-09-02 (9 Comments)
Trying to avoid 98 mods... by Jer (2011-09-02 14:56:06)
Difficulty: 4 of 5Under Melting the ice (in General)
Posted on 2011-09-01 (12 Comments)
3 solutions by Jer (2011-09-01 14:09:54)
Difficulty: 2 of 5Under It is not hard (in Word Problems)
Posted on 2011-08-29 (8 Comments)
re: The only way I can see it... by Jer (2011-08-29 17:23:51)
Difficulty: 3 of 5Under Sum of Ratios (in Geometry)
Posted on 2011-08-25 (2 Comments)
Unproven answer. by Jer (2011-08-25 13:58:29)
Difficulty: 2 of 5Under a!+ b!+ c!= abc – a (in Just Math)
Posted on 2011-08-14 (1 Comments)
Some Thoughts One triplet by Jer (2011-08-21 01:35:05)
Difficulty: 3 of 5Under 59 in one way (in Numbers)
Posted on 2011-08-13 (7 Comments)
re(2): Solution by Jer (2011-08-21 20:22:13)
Solution Solution by Jer (2011-08-21 01:28:14)
Difficulty: 3 of 5Under Floors and decimals integral II (in Calculus)
Posted on 2011-07-21 (3 Comments)
Solution for m=n=2 by Jer (2011-07-25 19:03:12)
Some Thoughts Solution to a lower dimension. by Jer (2011-07-25 00:11:00)
Difficulty: 4 of 5Under S-olve T-his (in Word Problems)
Posted on 2011-07-17 (4 Comments)
re(2): All except R by Jer (2011-07-18 00:08:49)
Difficulty: 3 of 5Under Three spheres (in Geometry)
Posted on 2011-07-08 (1 Comments)
Some Thoughts Possible 3 sphere solution. by Jer (2011-07-11 02:02:46)
Difficulty: 3 of 5Under Missing Hexadecimal Digits (in Just Math)
Posted on 2011-06-18 (2 Comments)
What is wrong? by Jer (2011-06-21 10:47:33)
Difficulty: 3 of 5Under By all means (in Just Math)
Posted on 2011-06-16 (5 Comments)
ths time by vectors by Jer (2011-06-16 15:54:07)
Another trigonometry way (this is too fun) by Jer (2011-06-16 15:35:29)
A more calculus way by Jer (2011-06-16 15:17:30)
A geometry + calculus way by Jer (2011-06-16 15:02:15)
A trigonometry way by Jer (2011-06-16 14:49:38)
Difficulty: 3 of 5Under Sum number equals integer (in Numbers)
Posted on 2011-06-11 (5 Comments)
Some Thoughts A start, by Jer (2011-06-14 02:03:15)
Difficulty: 3 of 5Under Missing digits (in Just Math)
Posted on 2011-06-06 (8 Comments)
D5 simpler by Jer (2011-06-07 10:16:13)
A few by hand by Jer (2011-06-06 15:07:01)
Difficulty: 2 of 5Under Fortieth logs (in Just Math)
Posted on 2011-05-31 (15 Comments)
Who is right for 7? by Jer (2011-06-01 15:08:08)
re(2): A start (spoiler) by Jer (2011-05-31 17:06:27)
Difficulty: 3 of 5Under A well-defined age (in Just Math)
Posted on 2011-05-23 (2 Comments)
Solution solution by Jer (2011-05-23 14:56:32)
Difficulty: 2 of 5Under Successively incident (in Just Math)
Posted on 2011-05-18 (2 Comments)
Hand solution by Jer (2011-05-19 10:32:02)
Difficulty: 2 of 5Under How young is he? (in Just Math)
Posted on 2011-05-16 (2 Comments)
Solution solution by Jer (2011-05-16 14:57:48)
Difficulty: 3 of 5Under Sum Remainder Deduction (in Just Math)
Posted on 2011-05-14 (1 Comments)
Solution Long Solution by Jer (2011-05-17 17:25:57)
Difficulty: 3 of 5Under Terminating in three 8s (in Just Math)
Posted on 2011-05-11 (3 Comments)
Solution unaided solution by Jer (2011-05-11 15:29:26)
Difficulty: 3 of 5Under 1 penny / 1 die (in Probability)
Posted on 2011-05-06 (5 Comments)
re: standard deviations -- of course -- by Jer (2011-05-08 00:18:22)
re: some solutions, but not sure about standard deviations by Jer (2011-05-06 15:52:41)
Difficulty: 3 of 5Under Concurrent Cevians (in Geometry)
Posted on 2011-05-03 (3 Comments)
Some Thoughts with different givens by Jer (2011-05-03 14:59:03)
Difficulty: 3 of 5Under Inversely Irrational (in Just Math)
Posted on 2011-05-01 (1 Comments)
Some Thoughts Inverse? by Jer (2011-05-02 15:11:04)
Difficulty: 3 of 5Under S.O.S. partition needed!! (in Just Math)
Posted on 2011-04-23 (1 Comments)
abcde by Jer (2011-04-25 10:59:05)
Difficulty: 4 of 5Under Limiting Ratio (in Calculus)
Posted on 2011-04-22 (3 Comments)
easy/hard by Jer (2011-04-22 14:40:04)
Difficulty: 2 of 5Under Random number sequence (in Probability)
Posted on 2011-04-20 (2 Comments)
re: Simple enough by Jer (2011-04-21 01:26:53)
Solution Simple enough by Jer (2011-04-21 01:24:22)
Difficulty: 3 of 5Under Unconsecutive-summables (in Numbers)
Posted on 2011-04-14 (3 Comments)
re: possible solution by Jer (2011-04-15 00:22:27)
Difficulty: 1 of 5Under Odd and Integer Zeros (in Just Math)
Posted on 2011-04-13 (4 Comments)
re: Question... by Jer (2011-04-13 15:08:53)
Difficulty: 3 of 5Under Lattice Point as Centroid (in Geometry)
Posted on 2011-04-10 (8 Comments)
re(2): One Solution (spoiler) by Jer (2011-04-11 11:40:09)
Difficulty: 3 of 5Under Find the area (in Numbers)
Posted on 2011-04-08 (5 Comments)
Hyperbolic solution. Seems to work. by Jer (2011-04-08 15:16:18)
Difficulty: 3 of 5Under My favorite numbers VII (in Just Math)
Posted on 2011-04-06 (3 Comments)
Solution Is it really this easy? by Jer (2011-04-06 15:09:44)
Difficulty: 2 of 5Under The median is shorter (in Geometry)
Posted on 2011-04-04 (1 Comments)
Solution solution by Jer (2011-04-04 15:10:47)
Difficulty: 1 of 5Under Almost equal (in Just Math)
Posted on 2011-04-01 (10 Comments)
Solution Now I remember the D1 way. by Jer (2011-04-01 16:51:05)
I must be doing something wrong. by Jer (2011-04-01 16:37:48)
Difficulty: 4 of 5Under Sequence Group V (in Just Math)
Posted on 2011-03-31 (4 Comments)
Some Thoughts Have to start somewhere. by Jer (2011-04-05 02:00:21)
Difficulty: 3 of 5Under Back to the base (in Numbers)
Posted on 2011-03-30 (3 Comments)
Solution Derivation by Jer (2011-03-30 22:39:18)
Difficulty: 3 of 5Under Powerful Digit (in Probability)
Posted on 2011-03-29 (12 Comments)
re: An attempt as (3), but it looks wrong according to simulation by Jer (2011-03-30 14:10:39)
re: part (1) not so hard after all (spoiler) by Jer (2011-03-30 10:01:43)
Difficulty: 3 of 5Under All or Exactly Two (in Geometry)
Posted on 2011-03-27 (5 Comments)
Some Thoughts Some thoughts by Jer (2011-03-27 23:56:40)
Difficulty: 3 of 5Under 2011 Powered Digits (in Just Math)
Posted on 2011-03-25 (5 Comments)
re: The Broll guesses... by Jer (2011-03-25 14:28:25)
Difficulty: 3 of 5Under Twice true (in Numbers)
Posted on 2011-03-24 (3 Comments)
Solution full solution by Jer (2011-03-24 11:09:02)
Difficulty: 3 of 5Under Incenter Assignment (in Geometry)
Posted on 2011-03-23 (4 Comments)
re(2): Solution. Hope this makes sense. by Jer (2011-03-23 17:03:55)
Solution Solution. Hope this makes sense. by Jer (2011-03-23 13:31:32)
Difficulty: 3 of 5Under Numerous Numeral Enumeration (in Just Math)
Posted on 2011-03-20 (10 Comments)
re(2): Solution of simple problem by Jer (2011-03-21 17:31:24)
Some Thoughts Solution of simple problem by Jer (2011-03-21 14:12:28)
re(2): Initial thoughts. by Jer (2011-03-21 14:07:59)
Initial thoughts. by Jer (2011-03-21 01:00:07)
Difficulty: 3 of 5Under Powerful Couple (in Probability)
Posted on 2011-03-16 (6 Comments)
re(2): exploration turned up something strange by Jer (2011-03-17 13:58:24)
exploration turned up something strange by Jer (2011-03-16 14:14:58)
Difficulty: 2 of 5Under Partition a Square (in Shapes)
Posted on 2011-03-15 (2 Comments)
Solution Spoiler. by Jer (2011-03-16 09:16:12)
Difficulty: 4 of 5Under Domino Polygons (in Probability)
Posted on 2011-03-14 (5 Comments)
re: 25! (Eureka!) by Jer (2011-03-15 16:05:20)
Difficulty: 4 of 5Under Neither 3 nor 6 (in Just Math)
Posted on 2011-03-11 (6 Comments)
re(2): Part a only (spoiler) by Jer (2011-03-14 09:11:42)
Difficulty: 3 of 5Under Hill Numbers Settlement II (in Probability)
Posted on 2011-03-09 (5 Comments)
Some Thoughts possible solution by Jer (2011-03-09 14:58:17)
Difficulty: 3 of 5Under Two happy ends (in Just Math)
Posted on 2011-03-07 (11 Comments)
re(3): solution NOT enough by Jer (2011-03-08 10:08:47)
Hints/Tips solution enough by Jer (2011-03-07 14:32:20)
Difficulty: 3 of 5Under a) is easy, b) is not (in Just Math)
Posted on 2011-02-18 (8 Comments)
My error - why we disagree on part 1 by Jer (2011-02-19 17:57:58)
Why a) is easy... by Jer (2011-02-18 16:51:57)
Difficulty: 4 of 5Under Upgrade to 13 (in Weights and Scales)
Posted on 2011-02-16 (4 Comments)
Almost solution. by Jer (2011-02-17 18:16:48)
Difficulty: 3 of 5Under Sum Supplement Settlement (in Geometry)
Posted on 2011-02-12 (2 Comments)
Solution Not a simple solution. by Jer (2011-02-15 11:11:14)
Difficulty: 2 of 5Under The Natives of Calendria (in Liars and Knights)
Posted on 2011-02-10 (3 Comments)
Solution Analysis & solution by Jer (2011-02-10 18:04:29)
Difficulty: 3 of 5Under Reloading the Dice (in Probability)
Posted on 2011-01-20 (10 Comments)
Solution Complete proof finished. by Jer (2011-01-24 16:44:44)
re(2): A further improvement by Jer (2011-01-24 16:31:50)
Some Thoughts A further improvement by Jer (2011-01-20 20:00:10)
possible solution by Jer (2011-01-20 18:11:52)
Difficulty: 4 of 5Under Two ellipses (in Geometry)
Posted on 2011-01-19 (3 Comments)
3 ellipses is as bad as I thought. by Jer (2011-01-20 16:52:19)
Possible solution with two ellipses. by Jer (2011-01-19 13:10:54)
Difficulty: 2 of 5Under A sequence (in Sequences)
Posted on 2011-01-14 (2 Comments)
re: who's counting? by Jer (2011-01-14 17:25:25)
Difficulty: 4 of 5Under I WONDER (in Logic)
Posted on 2011-01-13 (10 Comments)
Solution Divisibility in any base. by Jer (2011-01-13 15:28:43)
Difficulty: 2 of 5Under Scarce primes (in Numbers)
Posted on 2011-01-10 (10 Comments)
re(2): proof by Jer (2011-01-11 10:18:20)
proof by Jer (2011-01-10 15:01:43)
Difficulty: 3 of 5Under Lucky seven III (in Just Math)
Posted on 2011-01-05 (4 Comments)
With only a little cheating by Jer (2011-01-05 14:58:35)
Difficulty: 4 of 5Under 5 Digit Number II (in Numbers)
Posted on 2011-01-03 (4 Comments)
re(2): A start. by Jer (2011-01-04 11:04:31)
A start. by Jer (2011-01-03 15:13:28)
Difficulty: 3 of 5Under Around the ring (in Shapes)
Posted on 2010-12-20 (9 Comments)
re(2): part 1 not finished. by Jer (2010-12-21 15:08:01)
part 1 not finished. by Jer (2010-12-21 10:15:11)
Difficulty: 3 of 5Under Sum Divisors - 1 = Number (in Just Math)
Posted on 2010-12-16 (3 Comments)
Solution by Jer (2010-12-17 16:26:14)
Difficulty: 3 of 5Under Reverse Square to Prime (in Numbers)
Posted on 2010-12-14 (1 Comments)
Solution Ruling out possibilities by Jer (2010-12-14 17:17:43)
Difficulty: 2 of 5Under Hail to thee, Sofia! (in Just Math)
Posted on 2010-12-13 (10 Comments)
Solution re(2): What does not work..FIGURES CAN'T LIE . by Jer (2010-12-14 10:39:09)
What does not work... by Jer (2010-12-13 17:35:22)
Difficulty: 2 of 5Under Minimum perimeter length (in Geometry)
Posted on 2010-12-10 (5 Comments)
re: this program finds... (spoiler) by Jer (2010-12-10 16:26:33)
Solution Analytic solution by Jer (2010-12-10 16:12:22)
Difficulty: 2 of 5Under Mother of nine (in Just Math)
Posted on 2010-12-03 (5 Comments)
Solution just a bit of brute force by Jer (2010-12-03 17:29:16)
Difficulty: 3 of 5Under Dozen Divisibility Dilemma (in Just Math)
Posted on 2010-12-02 (4 Comments)
Solution re: Possible solution by Jer (2010-12-03 17:52:28)
Difficulty: 3 of 5Under Divide Into Four (in Geometry)
Posted on 2010-12-02 (3 Comments)
Solution Full solution by Jer (2010-12-02 15:34:48)
Difficulty: 3 of 5Under Mélodie de porc (in Cryptography)
Posted on 2010-11-30 (3 Comments)
re: Hints? Ok a hint or two. by Jer (2010-12-05 00:22:20)
Difficulty: 2 of 5Under Polynomial Ponder (in Just Math)
Posted on 2010-11-26 (2 Comments)
Solution? by Jer (2010-11-26 17:27:14)
Difficulty: 3 of 5Under Duplicate Digit Determination II (in Just Math)
Posted on 2010-11-19 (3 Comments)
An analogous case. by Jer (2010-11-19 17:26:33)
Difficulty: 3 of 5Under srebmuN desreveR (in Just Math)
Posted on 2010-11-18 (4 Comments)
Solution Analytic Solution to part 2 by Jer (2010-11-19 16:59:04)
Difficulty: 3 of 5Under Ambiguous PIN Code (in Numbers)
Posted on 2010-11-17 (8 Comments)
re(3): A Pin that works by Jer (2010-11-19 16:22:05)
re: Possible solution by Jer (2010-11-19 16:13:10)
A Pin that works by Jer (2010-11-18 15:55:00)
Difficulty: 2 of 5Under Magic, but limited (in Just Math)
Posted on 2010-11-12 (1 Comments)
Solution Full solution by Jer (2010-11-12 16:04:01)
Difficulty: 2 of 5Under Odd One Out (in Word Problems)
Posted on 2010-11-10 (10 Comments)
probably what you had in mind by Jer (2010-11-10 12:42:55)
Difficulty: 3 of 5Under Length of Angle Bisector (in Geometry)
Posted on 2010-11-07 (3 Comments)
Solution trig solution worked out by Jer (2010-11-08 14:57:42)
Difficulty: 4 of 5Under Abracadabra (in Word Problems)
Posted on 2010-10-29 (3 Comments)
making things up by Jer (2010-10-29 15:12:48)
Difficulty: 3 of 5Under Defined Function (in Just Math)
Posted on 2010-10-24 (4 Comments)
True story by Jer (2010-10-27 12:30:49)
Difficulty: 4 of 5Under Big, super and prime (in Numbers)
Posted on 2010-10-20 (8 Comments)
Solved by hand by Jer (2010-10-21 15:39:50)
Difficulty: 3 of 5Under Delicate Divisibility (in Probability)
Posted on 2010-10-19 (7 Comments)
re(3): ABACADABrA (Solution) by Jer (2010-10-20 01:30:59)
Solution ABACADABrA (Solution) by Jer (2010-10-19 17:07:14)
Difficulty: 2 of 5Under TriNRect (in Just Math)
Posted on 2010-10-13 (3 Comments)
re: solution. minor correction by Jer (2010-10-14 15:15:37)
Difficulty: 2 of 5Under Increase in number of factors. (in Numbers)
Posted on 2010-10-05 (3 Comments)
Solution by Jer (2010-10-05 14:55:03)
Difficulty: 2 of 5Under Cross Product Equality Settlement (in Sequences)
Posted on 2010-10-04 (2 Comments)
Solution Full solution by Jer (2010-10-04 15:01:41)
Difficulty: 2 of 5Under Three forever (in Tricks)
Posted on 2010-09-30 (5 Comments)
Solution by Jer (2010-09-30 15:49:41)
Difficulty: 3 of 5Under Nineteen triplets (in Just Math)
Posted on 2010-09-23 (10 Comments)
Solution Rational number solution. by Jer (2010-09-23 17:16:04)
Difficulty: 4 of 5Under If....Then... (in Logic)
Posted on 2010-09-21 (4 Comments)
re: computer solution (with diagnals) by Jer (2010-09-22 14:50:49)
Difficulty: 3 of 5Under Which multiple of 9? (in Just Math)
Posted on 2010-09-17 (8 Comments)
Part 5 by Jer (2010-09-26 21:11:14)
Difficulty: 2 of 5Under Foundation Piece (in Cryptography)
Posted on 2010-09-16 (7 Comments)
Solution Spoiler by Jer (2010-09-16 15:05:22)
Difficulty: 3 of 5Under 129 again (in Numbers)
Posted on 2010-09-15 (6 Comments)
Solution solution by Jer (2010-09-15 14:54:13)
Difficulty: 2 of 5Under Slowing by snowing (in Numbers)
Posted on 2010-09-13 (6 Comments)
re: numerical integration by Jer (2010-09-13 14:52:02)
Difficulty: 4 of 5Under Lamps in a row (in Geometry)
Posted on 2010-09-03 (11 Comments)
Almost proved: two gaps by Jer (2010-09-03 15:34:40)
Difficulty: 2 of 5Under The coat of many (in Word Problems)
Posted on 2010-06-24 (4 Comments)
You'll never see a unicorn. by Jer (2010-06-25 12:41:06)
Difficulty: 2 of 5Under Number = Sum (Digit)*Product (Digit) (in Numbers)
Posted on 2010-06-21 (10 Comments)
Solution & thoughts by Jer (2010-06-21 14:09:07)
Difficulty: 2 of 5Under Three Perps (in Geometry)
Posted on 2010-06-11 (2 Comments)
Analytic solution by Jer (2010-06-11 16:01:23)
Difficulty: 4 of 5Under Russian Roulette (in Probability)
Posted on 2010-06-08 (12 Comments)
Some Thoughts More complicated than I thought. How to do it. by Jer (2010-06-09 15:56:32)
Empty seats. by Jer (2010-06-08 14:38:31)
Difficulty: 5 of 5Under Cover the Center (in Geometry)
Posted on 2010-06-04 (6 Comments)
Trying N=4 by Jer (2010-06-04 17:14:45)
Some Thoughts N=2 and N=3 by Jer (2010-06-04 16:11:15)
Difficulty: 3 of 5Under Cubic and Consecutive Concern II (in Probability)
Posted on 2010-05-31 (10 Comments)
False start on an analytic solution by Jer (2010-06-01 15:14:59)
Difficulty: 4 of 5Under Make it equal (in Numbers)
Posted on 2010-05-26 (7 Comments)
Solution Full proof. by Jer (2010-05-27 11:32:44)
Difficulty: 3 of 5Under Constructing Minimal Area (in Geometry)
Posted on 2010-05-13 (5 Comments)
re: Solution by Jer (2010-05-13 15:07:11)
Difficulty: 4 of 5Under Power of two (in Just Math)
Posted on 2010-05-12 (1 Comments)
Solution Proof. by Jer (2010-05-12 15:26:52)
Difficulty: 2 of 5Under Many triplets (in Just Math)
Posted on 2010-05-10 (6 Comments)
re: Another set by Jer (2010-05-12 16:53:19)
Solution Some more infinities of solutions. by Jer (2010-05-10 15:36:11)
Difficulty: 3 of 5Under Successive Stones Settlement (in Games)
Posted on 2010-05-03 (2 Comments)
Some Thoughts A bunch of random thoughts. by Jer (2010-05-05 16:20:55)
Difficulty: 4 of 5Under 2*P + 2 = Perfect Square? (in Just Math)
Posted on 2010-05-01 (5 Comments)
re: a computerized start but no proof and too small a sample size by Jer (2010-05-03 02:03:04)
Difficulty: 2 of 5Under Power Pattern Poser (in Sequences)
Posted on 2010-04-27 (3 Comments)
Answer. No time to explain. by Jer (2010-04-27 17:27:03)
Difficulty: 4 of 5Under Choose your neighbor (in Numbers)
Posted on 2010-04-23 (3 Comments)
Solution Structure by Jer (2010-04-23 13:31:07)
Difficulty: 4 of 5Under Double coded message (in Cryptography)
Posted on 2010-04-21 (2 Comments)
Hint: by Jer (2010-04-23 11:34:40)
Difficulty: 3 of 5Under Choose To Prime Poser (in Just Math)
Posted on 2010-04-18 (4 Comments)
re(2): No Subject. No real hole in my proof. by Jer (2010-04-26 15:42:02)
Solution No Subject by Jer (2010-04-23 16:28:43)
Difficulty: 3 of 5Under Indi Games (in Geometry)
Posted on 2010-04-13 (12 Comments)
My thoughts on solutions and posted solution. by Jer (2010-04-15 11:20:21)
Difficulty: 3 of 5Under Twelve Divisor Trial (in Probability)
Posted on 2010-04-09 (7 Comments)
re: BARBARA IS EXPECTING (tiny error) by Jer (2010-04-09 15:30:47)
solution by Jer (2010-04-09 15:08:16)
Difficulty: 4 of 5Under Perfect Square To Divisibility By 56 (in Just Math)
Posted on 2010-04-01 (14 Comments)
re: Does this explain why 7 is a factor of n? by Jer (2010-04-06 10:18:02)
Some Thoughts A start by Jer (2010-04-01 15:26:23)
Difficulty: 3 of 5Under Counting triplets (in Numbers)
Posted on 2010-03-31 (7 Comments)
re: Solution (interpretations) by Jer (2010-03-31 14:09:23)
Difficulty: 2 of 5Under Minimal area. (in Geometry)
Posted on 2010-03-29 (11 Comments)
Explanation with no real proof. by Jer (2010-03-29 14:07:24)
Difficulty: 3 of 5Under Gambler's triangulation (in Probability)
Posted on 2010-03-18 (9 Comments)
Including degenerates by Jer (2010-03-19 14:26:56)
Solution General geometric solution by Jer (2010-03-18 14:18:10)
Difficulty: 3 of 5Under In Harmony with averages (in Numbers)
Posted on 2010-03-12 (2 Comments)
Solution A solution that might make sense. by Jer (2010-03-12 15:07:40)
Difficulty: 2 of 5Under Cubic and Consecutive Concern (in Probability)
Posted on 2010-03-11 (2 Comments)
Some Thoughts Partial analytic solution by Jer (2010-03-11 22:52:58)
Difficulty: 2 of 5Under Pigeons will like it (in Numbers)
Posted on 2010-03-08 (2 Comments)
Solution Adding zeros (full solution) by Jer (2010-03-08 16:12:52)
Difficulty: 2 of 5Under Limiting Mean (in Calculus)
Posted on 2010-03-07 (3 Comments)
Solution Solution by Jer (2010-03-08 15:21:12)
Difficulty: 3 of 5Under Squares joining quadratics (in Just Math)
Posted on 2010-02-24 (5 Comments)
re: Four squares by analysis (spoiler) by Jer (2011-02-12 19:10:06)
re(2): computer exploration (there is a 4th. a hint) by Jer (2010-02-26 15:01:36)
Difficulty: 2 of 5Under Getting Natural With Derivative And Integral (in Calculus)
Posted on 2010-02-11 (4 Comments)
re: Time for a solution, KS? by Jer (2010-02-18 13:16:20)
Difficulty: 4 of 5Under Lucky seven (in Numbers)
Posted on 2010-02-05 (5 Comments)
Such a number exists. by Jer (2010-02-05 16:30:09)
Difficulty: 3 of 5Under Infinitely Continued III (in Numbers)
Posted on 2010-02-04 (7 Comments)
A couple of things by Jer (2010-02-06 15:20:25)
Question Is my reasoning valid? by Jer (2010-02-04 15:17:51)
Difficulty: 3 of 5Under Drop into the Bucket (in Shapes)
Posted on 2010-02-03 (9 Comments)
Hints/Tips All 3 below are incorrect. No spoilers. by Jer (2010-02-03 16:31:24)
Difficulty: 3 of 5Under Enough is enough (in Games)
Posted on 2010-01-29 (4 Comments)
Solution If its the second option (spoiler) by Jer (2010-01-29 15:45:34)
Need clarification. by Jer (2010-01-29 15:36:31)
Difficulty: 2 of 5Under Square String Settlement (in Sequences)
Posted on 2010-01-28 (8 Comments)
Solution If I counted right... by Jer (2010-01-28 11:44:39)
Difficulty: 2 of 5Under Right Triangles (in Geometry)
Posted on 2010-01-22 (4 Comments)
re(2): Thank you Descartes. 3 solutions. by Jer (2010-01-24 02:24:13)
Solution Thank you Descartes. 3 solutions. by Jer (2010-01-22 15:05:10)
Difficulty: 1 of 5Under Sum Month and Day (in General)
Posted on 2010-01-14 (5 Comments)
Leaping lizards! by Jer (2010-01-14 14:58:35)
Difficulty: 3 of 5Under PX + 144 = Perfect Square (in Just Math)
Posted on 2010-01-12 (9 Comments)
Analytic solution by Jer (2010-01-12 14:39:18)
Difficulty: 3 of 5Under 15-Digits and Repunit Division (in Numbers)
Posted on 2010-01-07 (4 Comments)
Solution Analytical Solution by Jer (2010-01-09 20:16:05)
Difficulty: 1 of 5Under Triangles with no area (in Shapes)
Posted on 2009-12-30 (9 Comments)
re: Removal? by Jer (2010-01-01 14:15:17)
Difficulty: 4 of 5Under Supreme Successive Shuffle (in Probability)
Posted on 2009-12-15 (9 Comments)
Solution re: Some thoughts (Spoiler) Finished by Jer (2009-12-18 16:37:57)
re: Recursive two-way formula. Fixed. by Jer (2009-12-17 10:16:29)
Recursive two-way formula. by Jer (2009-12-16 18:55:43)
Difficulty: 3 of 5Under Rooting For The Limit II (in Calculus)
Posted on 2009-11-26 (4 Comments)
re: further computer exploration by Jer (2009-11-28 14:34:29)
Difficulty: 2 of 5Under sum of outcomes of three dice (in Probability)
Posted on 2009-11-20 (4 Comments)
pair plus a third by Jer (2009-11-20 15:14:22)
Difficulty: 2 of 5Under Rolling Die (in General)
Posted on 2009-11-19 (6 Comments)
dru my solutions by Jer (2009-11-19 15:17:32)
Difficulty: 3 of 5Under Consecutive 8-Digit Heron (in Geometry)
Posted on 2009-11-15 (4 Comments)
OEIS by Jer (2009-11-16 15:11:19)
Difficulty: 3 of 5Under Splitting a 2 by N Rectangle (in Shapes)
Posted on 2009-11-11 (3 Comments)
re: Table by Jer (2009-11-12 10:07:14)
Difficulty: 3 of 5Under Getting Powerful With Euler II (in Calculus)
Posted on 2009-11-10 (4 Comments)
puzzling by Jer (2009-11-10 15:27:08)
Difficulty: 3 of 5Under Two Rolling Balls (in Science)
Posted on 2009-11-04 (21 Comments)
depends by Jer (2009-11-04 16:56:11)
Difficulty: 2 of 5Under Gassed Up Racing (in General)
Posted on 2009-11-02 (4 Comments)
Some Thoughts Thinking about extensions (solved them too) by Jer (2009-11-03 15:15:28)
Difficulty: 3 of 5Under Supreme Seventy Sum (in Just Math)
Posted on 2009-10-30 (4 Comments)
Some Thoughts General method by Jer (2009-10-30 15:23:27)
Difficulty: 3 of 5Under 4x4 Grid Difference (in Probability)
Posted on 2009-10-27 (2 Comments)
Bonus first: by Jer (2009-10-27 16:29:25)
Difficulty: 3 of 5Under The ants go marching. (in Just Math)
Posted on 2009-10-21 (7 Comments)
re: Anty Climax for #6 by Jer (2009-10-28 16:16:59)
Difficulty: 3 of 5Under 2/5 ≤ m/n ≤ 3/5 (in Just Math)
Posted on 2009-10-20 (7 Comments)
re: Eureka! (spoiler) by Jer (2009-10-22 10:42:22)
Some Thoughts Stumped by Jer (2009-10-21 15:35:24)
Difficulty: 3 of 5Under x + y * 3√2 + z * 3√4 = 0 (in Just Math)
Posted on 2009-10-15 (14 Comments)
re: Non-rigorous argument by Jer (2009-10-15 14:59:19)
Difficulty: 3 of 5Under No Monochrome Sums (in Numbers)
Posted on 2009-10-14 (9 Comments)
re: Sloane says by Jer (2009-10-15 00:18:25)
Difficulty: 4 of 5Under 9 points to convex pentagon (in Shapes)
Posted on 2009-10-12 (4 Comments)
re(3): Happy Ending by Jer (2009-10-19 01:48:22)
re: Happy Ending by Jer (2009-10-18 01:22:37)
Difficulty: 2 of 5Under 8 points no convex pentagon (in Shapes)
Posted on 2009-10-09 (4 Comments)
re: possible real solution (not proven yet) -counterexample by Jer (2009-10-09 15:32:22)
Difficulty: 2 of 5Under 5 points to convex quad (in Shapes)
Posted on 2009-10-05 (4 Comments)
Hints/Tips re: another proof (tiny problem) by Jer (2009-10-06 17:52:27)
Difficulty: 3 of 5Under Chameleon Island (in Numbers)
Posted on 2009-09-25 (3 Comments)
Solution The key to solution by Jer (2009-09-25 15:27:02)
Difficulty: 4 of 5Under Unit lengths from movable points to unit triangles. (in Geometry)
Posted on 2009-09-14 (11 Comments)
You have about as much as I do. by Jer (2009-09-15 10:25:18)
Difficulty: 2 of 5Under Even Corners and Equal Subgrids (in Numbers)
Posted on 2009-08-18 (5 Comments)
re: computer solution by Jer (2009-08-18 14:05:40)
Difficulty: 3 of 5Under and W (in Word Problems)
Posted on 2009-07-14 (5 Comments)
re: Google's thoughts - Hints by Jer (2009-07-16 23:14:20)
Difficulty: 2 of 5Under Terminating in seven sevens (in Numbers)
Posted on 2009-06-26 (2 Comments)
re: computer solution by Jer (2009-06-26 20:32:47)
Difficulty: 3 of 5Under 3x3 Nim (in Games)
Posted on 2009-06-25 (26 Comments)
re: Winning Strategy (spoiler) by Jer (2009-06-25 17:02:11)
Difficulty: 3 of 5Under Powering Up The Matrix (in Just Math)
Posted on 2009-06-20 (3 Comments)
re: Solution by Jer (2009-06-22 13:37:20)
Difficulty: 3 of 5Under Triangles and Squares (in Geometry)
Posted on 2009-06-17 (4 Comments)
re: yellow/cyan proof by Jer (2009-06-17 14:23:39)
Difficulty: 4 of 5Under Lights switched (in Logic)
Posted on 2009-06-03 (5 Comments)
The search for order... by Jer (2009-06-04 15:08:52)
re(3): computer solution by Jer (2009-06-04 13:48:23)
re: computer solution by Jer (2009-06-04 11:51:06)
Difficulty: 4 of 5Under 5 Cards Magic Trick (in Logic)
Posted on 2009-05-29 (7 Comments)
Solution Possible system by Jer (2009-05-29 14:10:41)
re: This is not the solution but close by Jer (2009-05-29 13:51:34)
Difficulty: 1 of 5Under Random chord problem (in Geometry)
Posted on 2009-05-11 (15 Comments)
re(2): solution, maybe (good question) by Jer (2009-05-12 13:47:39)
Difficulty: 2 of 5Under Taking the 5th (in Numbers)
Posted on 2009-05-03 (5 Comments)
This takes me back... by Jer (2009-05-03 17:24:55)
Difficulty: 2 of 5Under Binomial Pandigital(s) (in Numbers)
Posted on 2009-04-28 (3 Comments)
thoughts by Jer (2009-04-29 13:35:09)
Difficulty: 3 of 5Under Factorials and Powers (in Just Math)
Posted on 2009-04-22 (8 Comments)
Question Related problem by Jer (2009-04-25 01:39:08)
Difficulty: 4 of 5Under In a Mystery.... (in Word Problems)
Posted on 2009-04-16 (12 Comments)
Listing words by Jer (2009-04-16 13:48:14)
Difficulty: 2 of 5Under Way to minimum and maximum (in Just Math)
Posted on 2009-04-08 (4 Comments)
analytic solution by Jer (2009-04-08 14:23:14)
Difficulty: 3 of 5Under Composite Total (in Numbers)
Posted on 2009-03-31 (2 Comments)
Solution solution by Jer (2009-03-31 10:58:13)
Difficulty: 3 of 5Under Derivative chains. (in Calculus)
Posted on 2009-03-29 (6 Comments)
Keep trying by Jer (2009-04-02 13:35:30)
Difficulty: 3 of 5Under Dicey numbers (in Numbers)
Posted on 2009-03-27 (6 Comments)
Got too big by Jer (2009-03-27 13:18:45)
A starting observation. by Jer (2009-03-27 12:56:37)
Difficulty: 2 of 5Under Making integer an expression (in Just Math)
Posted on 2009-03-20 (12 Comments)
solution by Jer (2009-03-20 13:22:09)
Difficulty: 3 of 5Under Exponent Crossed Power (in Just Math)
Posted on 2009-03-18 (10 Comments)
seemed like it would work by Jer (2009-03-18 13:06:25)
Difficulty: 2 of 5Under Integer Side Lengths (in Just Math)
Posted on 2009-03-05 (8 Comments)
re: To Jer and a Confirmation by Jer (2009-03-06 13:24:51)
re: Geometric solution! by Jer (2009-03-06 13:15:03)
Different solution by Jer (2009-03-05 14:02:01)
Difficulty: 3 of 5Under Factorials to Squares (in Numbers)
Posted on 2009-02-25 (3 Comments)
Some Thoughts Integer sequence for n! +1 = p^2 (help) by Jer (2009-02-26 14:55:52)
Difficulty: 3 of 5Under super powerful pandigitals (in Numbers)
Posted on 2009-02-24 (7 Comments)
Some Thoughts An uninteresting property. by Jer (2009-02-24 13:59:23)
Difficulty: 2 of 5Under Curious Consecutive Cyphers II (in Just Math)
Posted on 2009-02-23 (7 Comments)
Solution Complete Analytic Solution by Jer (2009-02-24 14:23:54)
Difficulty: 2 of 5Under Pennies, Dimes, and Quarters (in Numbers)
Posted on 2009-02-17 (10 Comments)
Some Thoughts On the generalization by Jer (2009-02-17 14:39:33)
Difficulty: 3 of 5Under Non-Multiples (in Numbers)
Posted on 2009-02-10 (3 Comments)
Some Thoughts smallish by Jer (2009-02-10 15:16:24)
Difficulty: 3 of 5Under Why, it's elementary my dear 74851687! (in Riddles)
Posted on 2009-02-04 (10 Comments)
Solution Got it. by Jer (2009-02-09 14:43:35)
Difficulty: 3 of 5Under Square And Intersection (in Geometry)
Posted on 2007-12-13 (3 Comments)
Analytic by Jer (2007-12-14 14:26:19)
Difficulty: 3 of 5Under Water Cocoon - Defying Newton (in Science)
Posted on 2007-12-09 (10 Comments)
Ideas by Jer (2007-12-10 10:47:30)
Difficulty: 3 of 5Under Cutting a Rectangle (in Shapes)
Posted on 2007-12-07 (8 Comments)
re(3): Solution missed some by Jer (2007-12-07 16:35:59)
re: Solution missed some by Jer (2007-12-07 14:02:25)
Difficulty: 2 of 5Under Linear and quadratic (in Calculus)
Posted on 2007-10-23 (9 Comments)
My 3 solutions. by Jer (2007-10-24 08:31:53)
Difficulty: 2 of 5Under Laser Puzzle (in General)
Posted on 2007-10-22 (9 Comments)
Hints/Tips Finally got to try it... by Jer (2007-10-22 11:13:17)
Difficulty: 3 of 5Under Mixing Meters, Yards and Months (in Numbers)
Posted on 2007-10-04 (8 Comments)
Improvement on brute force? by Jer (2007-10-04 15:26:36)
Difficulty: 3 of 5Under Convex Quadrilateral And Intersection (in Geometry)
Posted on 2007-10-03 (8 Comments)
Solution Harder than it looks by Jer (2007-10-03 10:53:09)
Difficulty: 3 of 5Under Rationalizing Decimals (in Numbers)
Posted on 2007-09-26 (8 Comments)
Question How about the numerator? by Jer (2007-09-26 11:05:27)
Difficulty: 3 of 5Under Getting Quadratic With Two Digits (in Numbers)
Posted on 2007-09-07 (2 Comments)
Solution By program (spoiler) by Jer (2007-09-07 10:53:39)
Difficulty: 2 of 5Under Take The Midpoints, Get Equilateral? (in Geometry)
Posted on 2007-08-01 (4 Comments)
re: answer--but not solution by Jer (2007-08-01 22:59:53)
Difficulty: 3 of 5Under 4,4,4,4.... (in Sequences)
Posted on 2007-07-31 (8 Comments)
Solution Assumed there is a trick by Jer (2007-08-01 17:09:28)
Difficulty: 3 of 5Under Spies Like Us (in General)
Posted on 2007-07-30 (3 Comments)
Some thoughts by Jer (2007-07-30 16:55:43)
Difficulty: 4 of 5Under Numbered Cards (in Probability)
Posted on 2007-07-23 (13 Comments)
re: Some starting thoughts by Jer (2007-07-23 20:34:51)
Difficulty: 3 of 5Under A problem on factors (in Just Math)
Posted on 2007-07-16 (2 Comments)
Some Thoughts Part 1 by Jer (2007-07-16 10:57:36)
Difficulty: 3 of 5Under Sum Three Factorials, Get Exponent (in Numbers)
Posted on 2007-07-03 (8 Comments)
Solution Full solution by Jer (2007-07-03 12:05:30)
Difficulty: 4 of 5Under The Pace of the Race (in Probability)
Posted on 2007-06-19 (4 Comments)
Part 1 for more players by Jer (2007-06-22 19:52:03)
Part 1 for 1 player by Jer (2007-06-22 19:41:05)
Difficulty: 3 of 5Under From Minus One to Plus One (in Numbers)
Posted on 2007-06-13 (6 Comments)
Solution general solution for even by Jer (2007-06-14 14:22:27)
re: computer solution by Jer (2007-06-14 09:05:22)
Difficulty: 3 of 5Under Equal Maxes (in Calculus)
Posted on 2007-06-12 (6 Comments)
Solution Too simple? by Jer (2007-06-12 11:46:03)
Difficulty: 3 of 5Under Triple Convergence (in Algorithms)
Posted on 2007-06-08 (1 Comments)
Cosine. No proofs. by Jer (2007-06-11 12:46:43)
Difficulty: 3 of 5Under Square in a Sector (in Geometry)
Posted on 2007-06-06 (5 Comments)
Solution by Jer (2007-06-07 12:06:23)
Difficulty: 3 of 5Under Face up Poker (in Games)
Posted on 2007-06-04 (8 Comments)
Some Thoughts Can you do better than tie? by Jer (2007-06-04 12:31:14)
Difficulty: 3 of 5Under Subtle Summed Squares (in Numbers)
Posted on 2007-05-18 (5 Comments)
re: Not so fast! by Jer (2007-05-21 12:26:28)
Solution Solution by Jer (2007-05-18 13:03:28)
Difficulty: 3 of 5Under Falling through the floor (in Probability)
Posted on 2007-05-18 (4 Comments)
re: solutions for first three by Jer (2007-05-18 12:54:48)
Difficulty: 3 of 5Under Consecutive Integer Series (in Numbers)
Posted on 2007-05-14 (12 Comments)
Solution Full expicit formula by Jer (2007-05-15 12:07:13)
Some Thoughts Better but worse by Jer (2007-05-14 15:36:15)
Difficulty: 3 of 5Under Magic trick (in General)
Posted on 2007-05-11 (51 Comments)
Some Thoughts A new approach by Jer (2007-05-14 12:59:05)
Some Thoughts A start by Jer (2007-05-11 13:20:12)
Difficulty: 4 of 5Under TetraCubes (in Shapes)
Posted on 2007-05-08 (2 Comments)
Found one by Jer (2007-05-09 12:25:58)
Difficulty: 4 of 5Under Sum Squared Divisors, Get Number (in Numbers)
Posted on 2007-05-03 (6 Comments)
One number that works by Jer (2007-05-03 13:19:49)
Difficulty: 2 of 5Under A Parallelogram Puzzle (in Geometry)
Posted on 2007-05-01 (5 Comments)
Harder solution by Jer (2007-05-01 12:13:28)
Difficulty: 2 of 5Under Well Balanced Letter: E (in Shapes)
Posted on 2007-04-30 (4 Comments)
re: If ... by Jer (2007-04-30 11:59:04)
Difficulty: 3 of 5Under Subtract Products, Get Identity? (in Just Math)
Posted on 2007-04-11 (3 Comments)
Solution Solution and a variant by Jer (2007-04-11 13:36:30)
Difficulty: 2 of 5Under Fast clock, slow clock (in Riddles)
Posted on 2007-04-11 (16 Comments)
Even more far fetched by Jer (2007-04-11 12:16:42)
Difficulty: 3 of 5Under Sum the squares, get factorial (in Numbers)
Posted on 2007-04-03 (2 Comments)
Solution Some insights by Jer (2007-04-04 12:10:54)
Difficulty: 3 of 5Under Paint it black (in Probability)
Posted on 2007-04-02 (9 Comments)
Not likely by Jer (2007-04-02 12:24:25)
Difficulty: 4 of 5Under Chain Reaction (in Logic)
Posted on 2007-04-01 (4 Comments)
re(2): Solution by Jer (2007-04-02 11:59:59)
Difficulty: 3 of 5Under A 2547 Puzzle (in Numbers)
Posted on 2007-03-29 (4 Comments)
My start by Jer (2007-03-30 11:30:41)
Difficulty: 3 of 5Under More Harmonic Integers (2) (in Numbers)
Posted on 2007-03-28 (6 Comments)
Some Thoughts Partly solved by Jer (2007-03-29 11:24:46)
Difficulty: 2 of 5Under Differences Do Dozen? (in Numbers)
Posted on 2007-03-28 (2 Comments)
Solution Dozen by Jer (2007-03-28 07:33:45)
Difficulty: 2 of 5Under Basic Statistics (in Numbers)
Posted on 2007-03-26 (3 Comments)
Solution Method by Jer (2007-03-26 11:36:35)
Difficulty: 4 of 5Under Incongruency (in Geometry)
Posted on 2007-03-23 (4 Comments)
6 triangles by Jer (2007-03-26 11:28:18)
Difficulty: 3 of 5Under At Fault Coverage (in Shapes)
Posted on 2007-03-22 (9 Comments)
re: A counting solution by Jer (2007-03-23 10:46:44)
Difficulty: 2 of 5Under Basic Factoring (in Just Math)
Posted on 2007-03-21 (4 Comments)
Question How's this? (Probable spoiler) by Jer (2007-03-21 11:07:37)
Difficulty: 2 of 5Under Powersdale To Quicksville (in General)
Posted on 2007-03-20 (4 Comments)
Solution slightly different solution by Jer (2007-03-21 11:58:01)
Difficulty: 2 of 5Under Integer coefficients (in Just Math)
Posted on 2007-03-13 (3 Comments)
Some Thoughts Outline of solution by Jer (2007-03-13 09:34:49)
Difficulty: 2 of 5Under Fair Pairs (in Probability)
Posted on 2007-03-05 (5 Comments)
Solution Triangles (solution) by Jer (2007-03-05 12:35:26)
Difficulty: 5 of 5Under Cutting Corners (in Geometry)
Posted on 2007-02-27 (20 Comments)
re: Corner Cutting Function by Jer (2007-03-01 13:34:11)
Some Thoughts Links and stuff by Jer (2007-02-28 12:40:52)
re: my observations by Jer (2007-02-28 08:32:57)
Difficulty: 4 of 5Under Special indices (in Just Math)
Posted on 2007-02-26 (3 Comments)
Solution My solution by Jer (2007-02-26 11:54:34)
Difficulty: 3 of 5Under Tricky Troublesome Trisection (in Shapes)
Posted on 2007-02-19 (9 Comments)
Solution 3 Origami Ways by Jer (2007-02-19 12:15:52)
Difficulty: 3 of 5Under Painted Sphere (in Geometry)
Posted on 2007-02-13 (9 Comments)
Solution Simplify by Jer (2007-02-13 15:41:03)
Difficulty: 2 of 5Under Connecting the Points (in General)
Posted on 2007-02-04 (8 Comments)
Solution Picture of Optimized solution by Jer (2007-02-05 12:12:58)
Optimized by Jer (2007-02-05 11:56:03)
Difficulty: 3 of 5Under Internal Triangle Problem (in Geometry)
Posted on 2007-02-02 (4 Comments)
Solution Non-vector solution by Jer (2007-02-02 12:40:39)
Difficulty: 3 of 5Under Let's Roll (in Science)
Posted on 2007-01-26 (4 Comments)
On a roll by Jer (2007-01-29 08:33:25)
Difficulty: 2 of 5Under Difficulties with hotel rooms (in General)
Posted on 2007-01-25 (20 Comments)
Solution One of infinitely many ways by Jer (2007-01-25 12:58:46)
Difficulty: 3 of 5Under Alien Messages (in Science)
Posted on 2007-01-23 (4 Comments)
re: from general knowledge (spoiler) by Jer (2007-01-24 11:51:48)
Difficulty: 2 of 5Under Allen's Ambivalent Approximation (in Probability)
Posted on 2007-01-11 (5 Comments)
Some Thoughts He's approximately correct - sort of by Jer (2007-01-11 12:08:13)
Difficulty: 2 of 5Under Addition sequence (in Sequences)
Posted on 2007-01-09 (5 Comments)
next few terms. (No spoiler) by Jer (2007-01-09 13:02:12)
Difficulty: 3 of 5Under A 2007 Problem (in Just Math)
Posted on 2007-01-04 (2 Comments)
Some Thoughts Only positive numbers. Don't ask me to actually find them. by Jer (2007-01-05 13:33:38)
Difficulty: 2 of 5Under An Atypical Product Problem (in Just Math)
Posted on 2007-01-03 (5 Comments)
Solutions by Jer (2007-01-03 11:32:30)
Difficulty: 2 of 5Under Six hundred coins (in Probability)
Posted on 2006-12-22 (12 Comments)
re(2): I might think you cheated. by Jer (2006-12-22 15:03:08)
Solution I might think you cheated. by Jer (2006-12-22 11:42:40)
Difficulty: 2 of 5Under No Cigar (in Numbers)
Posted on 2006-12-19 (10 Comments)
Hints/Tips OOO wins so far by Jer (2006-12-19 12:31:05)
Solution re: Closer still? Even better thanks to OOO by Jer (2006-12-19 11:51:16)
Solution re: Closer still? Even better thanks to OOO by Jer (2006-12-19 11:51:10)
Some Thoughts Closer still? by Jer (2006-12-19 11:43:33)
Difficulty: 2 of 5Under The Game (in Paradoxes)
Posted on 2006-12-14 (14 Comments)
Possible way to win by Jer (2006-12-14 11:07:06)
Difficulty: 3 of 5Under Row on Row (in General)
Posted on 2006-12-11 (10 Comments)
No ambiguity solution for part 1 by Jer (2006-12-12 10:41:22)
Difficulty: 3 of 5Under Sum crazy dice (in Probability)
Posted on 2006-11-30 (8 Comments)
Hints/Tips Part c) clarified. by Jer (2006-12-01 10:56:36)
Difficulty: 4 of 5Under Horoscope Hijinks I (in General)
Posted on 2006-11-28 (7 Comments)
Some Thoughts Smaller Zodiacs by Jer (2006-11-28 15:11:31)
Difficulty: 3 of 5Under Angle Trisection (in Geometry)
Posted on 2006-11-09 (6 Comments)
re: 'Dis Proof. The mistake by Jer (2006-11-10 10:46:20)
Difficulty: 2 of 5Under Geometric Integers (in Just Math)
Posted on 2006-11-09 (6 Comments)
re: doing something wrong? by Jer (2006-11-10 14:31:11)
re: doing something wrong? by Jer (2006-11-10 14:31:11)
doing something wrong? by Jer (2006-11-09 11:04:09)
Difficulty: 3 of 5Under 4-gon Probability (in Probability)
Posted on 2006-11-03 (2 Comments)
Part 1 is simpler. by Jer (2006-11-03 11:37:43)
Difficulty: 2 of 5Under Shrink needed (in Algorithms)
Posted on 2006-10-18 (26 Comments)
re(2): Ideas by Jer (2006-10-19 11:26:18)
Ideas by Jer (2006-10-18 12:04:55)
Difficulty: 5 of 5Under Radioactive Coins (in Weights and Scales)
Posted on 2006-10-17 (18 Comments)
Not opimum: 48 by Jer (2006-10-19 11:44:36)
Difficulty: 4 of 5Under Three Periodical Questions (in Numbers)
Posted on 2006-10-16 (4 Comments)
Question What is 'pure'? (and part 1 & 2)) by Jer (2006-10-16 11:09:06)
Difficulty: 3 of 5Under The digits and square numbers (in Numbers)
Posted on 2006-10-12 (3 Comments)
re: computer solution (spoiler) - Observation by Jer (2006-10-13 07:30:37)
Difficulty: 2 of 5Under Two Mirrors (in Geometry)
Posted on 2006-10-08 (4 Comments)
Some Thoughts To start by Jer (2006-10-10 11:36:40)
Difficulty: 2 of 5Under Those infinite small steps (in Just Math)
Posted on 2006-10-03 (8 Comments)
re: One proof out of many by Jer (2006-10-03 11:00:20)
Difficulty: 3 of 5Under A rational number problem (in Numbers)
Posted on 2006-10-02 (12 Comments)
re(2): Got it by Jer (2006-10-03 07:32:48)
Solution Got it by Jer (2006-10-02 14:35:17)
Difficulty: 2 of 5Under Corker (in Science)
Posted on 2006-10-02 (14 Comments)
re(2): Cheerios - bewilderment by Jer (2006-10-03 11:10:48)
I knew I had seen it recently by Jer (2006-10-02 11:26:30)
Some Thoughts Cheerios by Jer (2006-10-02 10:50:49)
Difficulty: 3 of 5Under Margana (in Word Problems)
Posted on 2006-09-27 (7 Comments)
Some Thoughts But which is the best? by Jer (2006-09-27 11:47:08)
Difficulty: 3 of 5Under Repeating decimals (in Numbers)
Posted on 2006-09-25 (11 Comments)
re: General solution by Jer (2006-09-26 11:17:03)
re(2): computer exploration by Jer (2006-09-25 11:46:38)
Difficulty: 5 of 5Under Can you match them up? (in Just Math)
Posted on 2006-09-21 (6 Comments)
re: Solutions 2 to 4 -I'm not sure by Jer (2006-09-21 20:28:18)
Difficulty: 4 of 5Under compoundwordplay (in Word Problems)
Posted on 2006-09-20 (5 Comments)
re: a solution (not bad) by Jer (2006-09-21 11:22:16)
Difficulty: 4 of 5Under Paint Job Pro (in Shapes)
Posted on 2006-09-19 (2 Comments)
Some Thoughts No Subject by Jer (2006-09-19 12:38:19)
Difficulty: 3 of 5Under Cutting planes with polygons (in Shapes)
Posted on 2006-09-06 (16 Comments)
re: Who dares: Not I by Jer (2006-09-11 11:20:23)
Solution I agree. Full explanation. by Jer (2006-09-07 11:46:34)
Difficulty: 3 of 5Under These are no fractions, are they? (in Numbers)
Posted on 2006-09-05 (15 Comments)
My thought by Jer (2006-09-06 07:27:50)
Difficulty: 4 of 5Under The gardener's woe is continuous (in Just Math)
Posted on 2006-08-30 (5 Comments)
re: Converge/Diverge by Jer (2006-08-31 14:33:05)
Difficulty: 4 of 5Under Summing or Multiplying (in Numbers)
Posted on 2006-08-21 (20 Comments)
Cursory examination by Jer (2006-08-21 10:03:34)
Difficulty: 3 of 5Under So how small is it then? (in Numbers)
Posted on 2006-08-09 (14 Comments)
re(2): This is a notation trick by Jer (2006-09-26 11:27:45)
re: different solution by Jer (2006-08-11 09:41:18)
Difficulty: 1 of 5Under Vital Vegetal Vibes (in General)
Posted on 2006-08-07 (11 Comments)
Yuck & Yum by Jer (2006-08-07 09:34:30)
Difficulty: 4 of 5Under Various Valleys, More Mountains (in Shapes)
Posted on 2006-07-26 (7 Comments)
Some possibly enlightening sites by Jer (2006-07-27 14:51:04)
Difficulty: 4 of 5Under 10 Ultimate cribbage hands (in Games)
Posted on 2006-07-18 (4 Comments)
re: Did I just peg out? by Jer (2006-07-19 09:20:56)
Difficulty: 4 of 5Under Rising water levels (in Shapes)
Posted on 2006-06-26 (26 Comments)
re: Worth a vote - calculusless by Jer (2006-06-28 09:53:43)
Difficulty: 4 of 5Under Gardener's Woe (in Just Math)
Posted on 2006-06-24 (26 Comments)
re(3): Nicely done -- now through 7 seedlings by Jer (2006-06-26 18:58:23)
Nicely done by Jer (2006-06-26 09:50:11)
re: My solution for 5 seeds by Jer (2006-06-25 11:26:50)
Clarifications and stuff by Jer (2006-06-24 17:01:57)
Difficulty: 3 of 5Under A case of misguided sheep. (in Riddles)
Posted on 2006-06-23 (22 Comments)
re: first real six string by Jer (2006-06-24 17:19:53)
Difficulty: 3 of 5Under Three Intercepts (in Just Math)
Posted on 2006-06-19 (7 Comments)
re: The Old Kitchen Sink by Jer (2006-06-20 14:50:08)
Difficulty: 4 of 5Under The Ultimate Cribbage Hand (in Games)
Posted on 2006-06-07 (21 Comments)
re: Why is J5555 only 29 pts? by Jer (2006-06-07 17:55:16)
Difficulty: 3 of 5Under Trading Places 2D (in Algorithms)
Posted on 2006-06-07 (3 Comments)
Solution Solution by Jer (2006-06-07 11:57:32)
Difficulty: 5 of 5Under Pegless Painting Plummets! (2) (in General)
Posted on 2006-06-02 (6 Comments)
Solution This works by Jer (2006-06-05 13:16:59)
Difficulty: 2 of 5Under Math Rebuses (Rebi?) (in Word Problems)
Posted on 2006-06-01 (8 Comments)
The one that isn't right by Jer (2006-06-01 12:49:52)
Difficulty: 3 of 5Under Multicolored Coins (in Probability)
Posted on 2006-05-24 (10 Comments)
Some Thoughts Solution, no expl. by Jer (2006-05-24 09:09:39)
Difficulty: 3 of 5Under Game Over! (in Probability)
Posted on 2006-05-22 (14 Comments)
re: solution for question 2 by Jer (2006-05-22 13:15:44)
Difficulty: 3 of 5Under Least L.C.M. (in Just Math)
Posted on 2006-05-19 (5 Comments)
Solution Second try (probably the solution) by Jer (2006-05-19 12:46:36)
First try by Jer (2006-05-19 12:40:24)
Difficulty: 2 of 5Under Cubes in a tin (in Shapes)
Posted on 2006-05-15 (23 Comments)
re: This should be the question by Jer (2006-05-16 12:30:02)
Difficulty: 3 of 5Under A 'well known' Sequence (in Sequences)
Posted on 2006-05-11 (6 Comments)
Hints/Tips re: A wild guess by Jer (2006-05-25 12:30:45)
Hints/Tips Hint by Jer (2006-05-18 12:16:35)
Difficulty: 3 of 5Under Garden Path (in Geometry)
Posted on 2006-05-10 (11 Comments)
re: Solution- I guess by Jer (2006-05-10 13:25:05)
Difficulty: 3 of 5Under Squares in a cross (in General)
Posted on 2006-05-10 (5 Comments)
Minimum by Jer (2006-05-11 12:24:07)
Difficulty: 3 of 5Under Repeated Root Research (in Calculus)
Posted on 2006-05-08 (6 Comments)
Complex not possible by Jer (2006-05-09 13:14:57)
Difficulty: 3 of 5Under Gravity experiment (in General)
Posted on 2006-05-04 (29 Comments)
Solution Possibly right solution, partial expl. by Jer (2006-05-04 14:09:26)
Difficulty: 1 of 5Under Square = half itself? (in Shapes)
Posted on 2006-05-04 (19 Comments)
re: Another alternative by Jer (2006-05-04 12:32:39)
re: alternatives by Jer (2006-05-04 12:31:52)
Difficulty: 3 of 5Under View from Perplexus Tower (in General)
Posted on 2006-04-27 (9 Comments)
Solution The rest of them. by Jer (2006-04-27 13:06:05)
Solution First part, alternate expl. by Jer (2006-04-27 12:55:14)
Difficulty: 4 of 5Under 3 in a row = bad (in General)
Posted on 2006-04-26 (13 Comments)
re: Minimum and Maximum by Jer (2006-04-27 13:23:57)
Difficulty: 3 of 5Under They do it with mirrors (in Science)
Posted on 2006-04-26 (8 Comments)
Solution re: Not without help by Jer (2006-04-26 13:19:19)
Difficulty: 3 of 5Under Three from Nine (in Probability)
Posted on 2006-04-25 (12 Comments)
re(3): Partial Solution by Jer (2006-04-25 13:40:54)
re: Partial Solution by Jer (2006-04-25 13:08:44)
Some Thoughts Probable solution by Jer (2006-04-25 13:04:13)
Difficulty: 3 of 5Under A Composite Determination Problem (in Just Math)
Posted on 2006-04-23 (14 Comments)
Some Thoughts does this make sense? by Jer (2006-04-23 13:43:24)
re: A first stab at the solution by Jer (2006-04-23 13:21:48)
Difficulty: 1 of 5Under Padre (in Famous Riddles)
Posted on 2006-04-19 (27 Comments)
re: Solution (with computer verification) by Jer (2006-04-19 21:17:02)
Difficulty: 3 of 5Under Circular Jogging Track Problem 2 (in General)
Posted on 2006-04-13 (6 Comments)
re(2): solution by Jer (2006-04-14 07:41:47)
Solution, no explanation by Jer (2006-04-13 14:10:13)
Difficulty: 3 of 5Under Circular Jogging Track Problem (in General)
Posted on 2006-04-12 (9 Comments)
Near miss on day two by Jer (2006-04-13 13:38:00)
Difficulty: 3 of 5Under Two fours (or fewer?) (in Numbers)
Posted on 2006-04-07 (15 Comments)
Unreliable use of reliable source by Jer (2006-04-11 12:44:22)
re: Second Part by Jer (2006-04-11 12:26:36)
re: Reliable source by Jer (2006-04-10 15:59:32)
Reliable source by Jer (2006-04-10 15:50:32)
Difficulty: 2 of 5Under It's in the Cards (in General)
Posted on 2006-04-06 (6 Comments)
What kind of game? by Jer (2006-04-06 11:38:53)
Difficulty: 4 of 5Under Wreck out! (in Algorithms)
Posted on 2006-04-03 (6 Comments)
Solution I think I got it. by Jer (2006-04-03 13:24:26)
Difficulty: 3 of 5Under Integer Solutions (in Numbers)
Posted on 2006-03-30 (16 Comments)
I think I got it. by Jer (2006-03-30 14:25:56)
Difficulty: 3 of 5Under Rotating slopes (in Just Math)
Posted on 2006-03-21 (5 Comments)
re: Solution - how do you use it? by Jer (2006-03-22 14:25:41)
Difficulty: 3 of 5Under Pythagorean Chain (in Shapes)
Posted on 2006-03-20 (18 Comments)
re(2): Is 10000 too big? Is 1000 too big? by Jer (2006-03-21 13:16:29)
Is 10000 too big? by Jer (2006-03-21 07:42:36)
Difficulty: 3 of 5Under A Quintic Problem (in Just Math)
Posted on 2006-03-15 (7 Comments)
re: Small steps (another step) by Jer (2006-03-16 12:53:05)
Difficulty: 3 of 5Under Discover U.S. (in Cryptography)
Posted on 2006-03-14 (11 Comments)
re(3): Solution (again) by Jer (2006-03-14 14:41:44)
Difficulty: 3 of 5Under and (in Word Problems)
Posted on 2006-03-13 (26 Comments)
re(2): The coordinating conjunctions by Jer (2006-03-13 13:53:35)
re(2): The coordinating conjunctions by Jer (2006-03-13 13:52:27)
re(2): The coordinating conjunctions by Jer (2006-03-13 13:52:25)
re(2): The coordinating conjunctions by Jer (2006-03-13 13:52:20)
re(2): The coordinating conjunctions by Jer (2006-03-13 13:51:23)
Difficulty: 4 of 5Under Cross cut (in Shapes)
Posted on 2006-03-06 (18 Comments)
re(2): 4 pieces minus epsilon by Jer (2006-03-08 12:33:47)
4 pieces minus epsilon by Jer (2006-03-07 15:32:14)
Some Thoughts 8 pc. similar solution by Jer (2006-03-06 15:08:33)
Difficulty: 3 of 5Under Common Link (in Word Problems)
Posted on 2006-03-03 (7 Comments)
Some Thoughts my guess - possibly close by Jer (2006-03-03 12:41:54)
Difficulty: 3 of 5Under Factorial sequence (in Just Math)
Posted on 2006-03-02 (2 Comments)
Solution Proof/Explanation by Jer (2006-03-02 12:48:08)
Difficulty: 3 of 5Under The Gardener and the Cook (in Tricks)
Posted on 2006-03-01 (29 Comments)
re(2): April 1, 1900 - Sunday by Jer (2006-03-02 13:11:02)
Difficulty: 3 of 5Under Splitting shapes (in Shapes)
Posted on 2006-02-16 (9 Comments)
re(3): All but 5 by Jer (2006-03-16 13:12:10)
4 region solutions by Jer (2006-02-17 12:49:34)
Some Thoughts going further by Jer (2006-02-16 13:33:42)
Solution Pictures of solutions by Jer (2006-02-16 13:19:09)
Difficulty: 3 of 5Under Expect the unexpected (in Paradoxes)
Posted on 2006-02-15 (32 Comments)
well... by Jer (2006-02-15 12:34:43)
Difficulty: 4 of 5Under Bouncy Bouncy part 2 (in Calculus)
Posted on 2006-02-10 (14 Comments)
re: Some Thoughts by Jer (2006-02-14 12:32:50)
and other thing... by Jer (2006-02-13 12:39:34)
Hints/Tips Incidentally by Jer (2006-02-13 12:34:17)
Difficulty: 2 of 5Under Bouncy Bouncy Part 1 (in Geometry)
Posted on 2006-02-08 (10 Comments)
your solutions are all to complicated by Jer (2006-02-09 07:36:55)
Difficulty: 2 of 5Under Scrabble® Scramble (in Games)
Posted on 2006-02-03 (7 Comments)
re: Any better set of letters? (suggestion) by Jer (2006-02-03 14:16:06)
Difficulty: 4 of 5Under Sequence o' Fun (in Sequences)
Posted on 2006-01-25 (4 Comments)
Smaller than I thought... (spoiler) by Jer (2006-01-25 14:55:47)
Difficulty: 2 of 5Under A Capital Idea! (in Sequences)
Posted on 2006-01-24 (12 Comments)
Is that really it? by Jer (2006-01-24 14:30:55)
Difficulty: 3 of 5Under Odometer Sum of the Digits (in Numbers)
Posted on 2006-01-19 (11 Comments)
Some Thoughts Best I could get playing with it by Jer (2006-01-19 12:39:42)
Difficulty: 4 of 5Under A cute little angle to find (in Geometry)
Posted on 2006-01-18 (7 Comments)
Source of this problem by Jer (2006-01-19 07:39:25)
Difficulty: 2 of 5Under Circle's Limit (in Calculus)
Posted on 2006-01-13 (4 Comments)
I think I proved it without calculus. by Jer (2006-01-13 10:29:30)
Difficulty: 3 of 5Under Something in common (in General)
Posted on 2006-01-11 (5 Comments)
If I got it it doesn't make much sense... by Jer (2006-01-12 14:38:47)
re: Hints by Jer (2006-01-12 14:30:28)
Difficulty: 3 of 5Under Stupid number trick III (in Numbers)
Posted on 2006-01-11 (11 Comments)
re(2): Fractals & a hard extension by Jer (2006-01-12 07:41:19)
Fractals & a hard extension by Jer (2006-01-11 14:26:40)
Difficulty: 3 of 5Under Two squares (in Shapes)
Posted on 2006-01-05 (7 Comments)
re: Solution by Jer (2006-01-05 14:35:58)
Difficulty: 2 of 5Under Two spheres in a tank (in Science)
Posted on 2006-01-05 (11 Comments)
about sugar by Jer (2006-01-10 12:46:03)
Difficulty: 1 of 5Under What number? (in Tricks)
Posted on 2005-12-16 (6 Comments)
My thought by Jer (2005-12-19 09:28:17)
Difficulty: 2 of 5Under Only briefly continuous (in Calculus)
Posted on 2005-12-15 (11 Comments)
Question Non-piecewise by Jer (2005-12-15 14:34:42)
Difficulty: 3 of 5Under Equal Angles (in Geometry)
Posted on 2005-12-14 (4 Comments)
Question re: Is there an easier way? ??? by Jer (2005-12-14 14:28:39)
Difficulty: 5 of 5Under Boiling Impossibilities (in Science)
Posted on 2005-12-06 (41 Comments)
re(4): The Answer by Jer (2005-12-15 14:45:30)
so far no good by Jer (2005-12-06 10:42:47)
Difficulty: 3 of 5Under The prisoners and the beans (in Logic)
Posted on 2005-11-27 (38 Comments)
re: by Jer (2005-12-07 09:41:45)
re: Prisoner's Dilemma Deluxe by Jer (2005-11-30 09:47:08)
Difficulty: 4 of 5Under Box bounce (in Geometry)
Posted on 2005-11-17 (26 Comments)
re(6): weighing in (my error) by Jer (2005-11-26 13:22:32)
re(4): weighing in on the gravity solution (full solution?) by Jer (2005-11-22 07:48:04)
re(2): weighing in on the gravity solution (full solution?) by Jer (2005-11-21 10:07:18)
Solution weighing in on the gravity solution (full solution?) by Jer (2005-11-18 09:53:51)
Difficulty: 3 of 5Under Connect the planets (in General)
Posted on 2005-11-16 (10 Comments)
Mt drawing by Jer (2005-11-16 12:32:01)
Difficulty: 3 of 5Under A new kind of pattern? (in Sequences)
Posted on 2005-11-08 (7 Comments)
re: Next 3 by Jer (2005-11-08 15:28:33)
Difficulty: 2 of 5Under The Dice Game (in Games)
Posted on 2005-11-04 (12 Comments)
Solution Solution given assumptions. by Jer (2005-11-04 07:47:24)
Difficulty: 4 of 5Under Set of Spheres (in Geometry)
Posted on 2005-11-03 (7 Comments)
re(2): mathworld link by Jer (2005-11-07 07:39:00)
Hints/Tips mathworld link by Jer (2005-11-04 12:47:40)
Difficulty: 3 of 5Under Covering A Circle (in Shapes)
Posted on 2005-10-21 (11 Comments)
re: overlap solution by Jer (2005-10-21 13:08:16)
Solution overlap solution by Jer (2005-10-21 13:05:00)
Solution non-overlap solution by Jer (2005-10-21 12:59:52)
overlap? by Jer (2005-10-21 12:25:25)
Difficulty: 3 of 5Under Isosceles Right Triangles (in Geometry)
Posted on 2005-10-19 (10 Comments)
Analytic solution by Jer (2005-10-19 13:36:12)
Difficulty: 2 of 5Under Scratch a Home Run! (in Probability)
Posted on 2005-10-18 (8 Comments)
Solution My solution by Jer (2005-10-18 10:44:23)
Difficulty: 3 of 5Under Wrapping an Equilateral Triangle (in Geometry)
Posted on 2005-10-10 (15 Comments)
estimate by Jer (2005-10-11 19:15:06)
Difficulty: 4 of 5Under Trigrams (in Word Problems)
Posted on 2005-10-07 (36 Comments)
re: BWA by Jer (2005-10-07 18:56:21)
Difficulty: 2 of 5Under Twelve what?! (in General)
Posted on 2005-10-04 (22 Comments)
i) by Jer (2005-10-05 13:54:42)
Difficulty: 2 of 5Under Make a hole (in General)
Posted on 2005-10-02 (6 Comments)
Solution Solution and analysis by Jer (2005-10-03 14:10:14)
Difficulty: 3 of 5Under Crossing the board (in General)
Posted on 2005-09-30 (10 Comments)
Solution Spoiler by Jer (2005-09-30 19:27:34)
Difficulty: 3 of 5Under Buddy System (in Just Math)
Posted on 2005-09-22 (8 Comments)
re: need a better formula (!!) by Jer (2005-09-22 19:17:57)
Difficulty: 2 of 5Under Shorten and halve (in Word Problems)
Posted on 2005-09-21 (32 Comments)
Some Thoughts edible math solution by Jer (2005-09-21 18:48:23)
Difficulty: 4 of 5Under Recursive Definition (in Numbers)
Posted on 2005-09-09 (7 Comments)
Some Thoughts But can I prove it? by Jer (2005-09-09 16:52:56)
Difficulty: 3 of 5Under Sorta pythagoric... (in Numbers)
Posted on 2005-09-01 (16 Comments)
re(2): Not other small ones by Jer (2005-09-02 13:59:51)
re(2): chipping away at the possibilities by Jer (2005-09-02 13:57:00)
Not other small ones by Jer (2005-09-01 19:15:28)
Difficulty: 3 of 5Under Are we odd for liking this, too? (in Cryptography)
Posted on 2005-08-30 (18 Comments)
Question re: hint by Jer (2005-09-07 15:10:32)
Difficulty: 3 of 5Under A quadrilateral query (in Geometry)
Posted on 2005-08-29 (5 Comments)
re: Computer verification of minimum by Jer (2005-08-29 18:44:54)
Difficulty: 1 of 5Under Close to a million (in General)
Posted on 2005-07-18 (12 Comments)
re(2): Another great word by Jer (2015-08-09 22:14:12)
Difficulty: 3 of 5Under From a Balloon (in Science)
Posted on 2005-07-07 (33 Comments)
My thoughts by Jer (2005-07-07 19:45:23)
Difficulty: 2 of 5Under Digit Sequence (in Sequences)
Posted on 2005-06-28 (15 Comments)
re: the solution by Jer (2005-06-28 12:12:26)
Difficulty: 1 of 5Under My clever father (in Tricks)
Posted on 2005-06-24 (14 Comments)
A couple of choices by Jer (2005-06-24 12:02:26)
Difficulty: 4 of 5Under Tipping Tube (in Science)
Posted on 2005-06-23 (11 Comments)
re(2): What I think I know (displacement) by Jer (2005-06-24 12:58:39)
What I think I know by Jer (2005-06-23 18:47:55)
Difficulty: 3 of 5Under Similar Sides Sought (in Geometry)
Posted on 2005-06-20 (6 Comments)
Question re: BIG GOOF by Jer (2005-06-22 19:00:45)
General Solution by Jer (2005-06-20 17:56:51)
Difficulty: 2 of 5Under Perplexus Icon plus one (in Shapes)
Posted on 2005-06-18 (12 Comments)
re: No Subject by Jer (2005-06-24 12:12:14)
Great problem by Jer (2005-06-20 17:09:20)
Difficulty: 5 of 5Under Elemental game (in Probability)
Posted on 2005-06-16 (17 Comments)
Some Thoughts Ranking the Elements by Jer (2005-06-16 20:10:33)
Difficulty: 3 of 5Under Unusual binary representation (in Numbers)
Posted on 2005-06-14 (9 Comments)
No Subject by Jer (2005-06-14 17:03:51)
Difficulty: 3 of 5Under Perplexing Polynomial Puzzle (in Numbers)
Posted on 2005-06-13 (6 Comments)
Solution Yet another way by Jer (2005-06-14 17:25:58)
Difficulty: 3 of 5Under Dotty Right Triangle (in Numbers)
Posted on 2005-06-09 (6 Comments)
Solution Solution by Jer (2005-06-09 17:42:57)
Difficulty: 2 of 5Under Are we odd for liking this? (in Cryptography)
Posted on 2005-06-09 (12 Comments)
re: Variety of possibilities by Jer (2005-06-09 17:04:49)
Difficulty: 2 of 5Under Might Merely Meet (in Probability)
Posted on 2005-06-07 (12 Comments)
re(2): Solution + Spoiler (Ups...) by Jer (2005-06-07 19:01:44)
re: Solution + Spoiler by Jer (2005-06-07 19:01:20)
Difficulty: 4 of 5Under A repeating irrational number? (in Just Math)
Posted on 2005-06-06 (7 Comments)
I has to use a calculator a little. by Jer (2005-06-06 18:19:57)
Difficulty: 4 of 5Under Narrow path through the Eternal Forest (in Geometry)
Posted on 2005-05-26 (8 Comments)
Solution All done! by Jer (2005-05-27 19:08:52)
re: Thoughts by Jer (2005-05-27 12:06:41)
Some Thoughts slopes of 1/n by Jer (2005-05-26 19:41:23)
Difficulty: 2 of 5Under Count with me (in Sequences)
Posted on 2005-05-26 (16 Comments)
Solution Full solution by Jer (2005-05-27 12:15:06)
re(2): The next 16 terms by Jer (2005-05-26 18:59:01)
The next 16 terms by Jer (2005-05-26 16:58:50)
Difficulty: 2 of 5Under Too many threes and sixes (in Just Math)
Posted on 2005-05-25 (10 Comments)
re: Solution with proof by Jer (2005-05-25 18:48:56)
There is a pattern to it by Jer (2005-05-25 18:09:00)
Difficulty: 2 of 5Under Strange divisibility (in Just Math)
Posted on 2005-05-25 (27 Comments)
re(2): Bigger numbers (sqrt) by Jer (2005-05-25 18:47:00)
Bigger numbers by Jer (2005-05-25 17:47:00)
Smaller numbers by Jer (2005-05-25 17:30:49)
Difficulty: 2 of 5Under Discriminants (in Numbers)
Posted on 2005-05-24 (7 Comments)
A further note by Jer (2005-06-08 16:56:26)
Difficulty: 3 of 5Under Cut Wire (in Calculus)
Posted on 2005-05-20 (6 Comments)
Calculus? by Jer (2005-05-20 19:07:25)
Difficulty: 5 of 5Under 3 points colinear? No way! (in Just Math)
Posted on 2005-05-19 (14 Comments)
re(2): So at least the first 32 are reachable... by Jer (2005-05-20 18:02:21)
So at least the first 32 are reachable... by Jer (2005-05-20 12:09:20)
Theoretical limits reachable? by Jer (2005-05-19 17:02:04)
Difficulty: 2 of 5Under TNR (in Cryptography)
Posted on 2005-05-18 (6 Comments)
Make sure you're in TNR by Jer (2005-05-18 16:52:26)
Difficulty: 3 of 5Under Six-Sided Snowflakes (in General)
Posted on 2005-05-16 (7 Comments)
I just invented a variation I've never seen before by Jer (2005-05-16 19:06:39)
Difficulty: 2 of 5Under Radically confusing (in Numbers)
Posted on 2005-05-14 (15 Comments)
Fixing my Problem: by Jer (2005-05-16 16:51:09)
Difficulty: 2 of 5Under 50 - Digit Number II (in Numbers)
Posted on 2005-05-13 (11 Comments)
Solution by lucky guess by Jer (2005-05-13 16:55:53)
Difficulty: 3 of 5Under Triangular Billiard Table (in Geometry)
Posted on 2005-05-12 (9 Comments)
What I've found by Jer (2005-05-12 18:44:13)
re: My Efforts by Jer (2005-05-12 18:10:48)
Difficulty: 4 of 5Under Line up (in Games)
Posted on 2005-05-06 (14 Comments)
N=4? probably not by Jer (2005-05-06 18:53:53)
Some Thoughts N=3? by Jer (2005-05-06 18:43:27)
Difficulty: 2 of 5Under Buggy problem (in General)
Posted on 2005-05-06 (6 Comments)
comparing the two solutions by Jer (2005-05-06 17:04:22)
Difficulty: 2 of 5Under Intergalactic Journey (in Just Math)
Posted on 2005-05-05 (8 Comments)
Solution Zoom-a-zoom-zoom by Jer (2005-05-05 18:00:24)
Difficulty: 4 of 5Under Squaring sides (in Geometry)
Posted on 2005-05-04 (4 Comments)
The analytic geometry way (part 1 only) by Jer (2005-05-05 17:42:01)
Difficulty: 3 of 5Under Towers of Hanoi variation (in Algorithms)
Posted on 2005-05-03 (14 Comments)
re: solution (I think) by Jer (2005-05-03 17:53:32)
On second thought... by Jer (2005-05-03 17:05:25)
Question Is this problem asking what you think? by Jer (2005-05-03 17:02:45)
Difficulty: 5 of 5Under Rational sine (in Just Math)
Posted on 2005-05-02 (7 Comments)
part 2 (probably) by Jer (2005-05-06 18:57:16)
Difficulty: 5 of 5Under Mental Math Competition (in Algorithms)
Posted on 2005-04-29 (7 Comments)
Some Thoughts some things I noticed by Jer (2005-05-02 17:44:43)
Difficulty: 4 of 5Under Just find two! (in Geometry)
Posted on 2005-04-27 (25 Comments)
A picture of Bryan's solution by Jer (2005-04-28 17:38:03)
Difficulty: 3 of 5Under 1000th digit (in Numbers)
Posted on 2005-04-26 (30 Comments)
Here Jonathan! by Jer (2005-04-27 17:48:26)
Here Jonathan, you count 'em by Jer (2005-04-27 17:37:48)
Here Jonathan, you count 'em by Jer (2005-04-27 17:37:35)
Some Thoughts Some thoughts and a guess by Jer (2005-04-26 19:10:52)
Difficulty: 1 of 5Under The Second Level (in Probability)
Posted on 2005-04-26 (10 Comments)
Cheating solution by Jer (2005-04-26 18:15:49)
Difficulty: 3 of 5Under Tethered satellites (in Science)
Posted on 2005-04-13 (13 Comments)
Just a guess by Jer (2005-04-13 19:28:16)
Difficulty: 3 of 5Under It is infinite if it isn't? (in Paradoxes)
Posted on 2005-04-12 (35 Comments)
re: No paradox by Jer (2005-04-13 17:12:08)
Difficulty: 3 of 5Under Roll the Die Higher (in Probability)
Posted on 2005-04-07 (13 Comments)
Solution w/o expl. and a question by Jer (2005-04-07 20:18:35)
Difficulty: 3 of 5Under Passing Through (in Just Math)
Posted on 2005-04-06 (27 Comments)
up to 5x5 by Jer (2005-04-07 18:09:42)
Difficulty: 3 of 5Under Shoelaces (in Probability)
Posted on 2005-04-05 (7 Comments)
Some Thoughts Recursive definition by Jer (2005-04-05 19:14:21)
Difficulty: 2 of 5Under A Horse Tied To A Barn (in Shapes)
Posted on 2005-04-02 (10 Comments)
I like making pictures by Jer (2005-04-04 17:56:26)
Difficulty: 3 of 5Under Sums of squares and stuff. (in Numbers)
Posted on 2005-03-26 (16 Comments)
What do you do in a boring meeting? by Jer (2005-03-30 20:10:05)
re(3): And some more by Jer (2005-03-29 19:02:48)
re: 67 can be topped... by Jer (2005-03-28 19:13:15)
I wonder if 67 can be topped... by Jer (2005-03-28 18:40:24)
Difficulty: 3 of 5Under Hollow ball (in Science)
Posted on 2005-03-25 (26 Comments)
re: If you don't have a ramp available by Jer (2005-03-25 17:07:36)
Difficulty: 3 of 5Under Cut Cube = Cone (in Geometry)
Posted on 2005-03-17 (2 Comments)
Solution Full solution by Jer (2005-03-17 19:18:02)
Difficulty: 3 of 5Under Great Directions (in Geometry)
Posted on 2005-03-16 (8 Comments)
re(2): I thought I'd try a picture by Jer (2005-03-17 17:39:50)
I thought I'd try a picture by Jer (2005-03-16 17:27:21)
Difficulty: 3 of 5Under Clueless (in Numbers)
Posted on 2005-03-14 (6 Comments)
Some Thoughts Am I clueless? by Jer (2005-03-14 18:40:56)
Difficulty: 3 of 5Under Curious Continuous Connection (in Shapes)
Posted on 2005-03-10 (4 Comments)
re(3): ...but can I draw it? by Jer (2005-03-11 12:17:03)
...but can I draw it? by Jer (2005-03-10 18:34:29)
Difficulty: 5 of 5Under Sastry's Evil Bisectors (in Geometry)
Posted on 2005-03-04 (10 Comments)
re: Jer's arithmetic needs work... by Jer (2005-03-07 12:13:59)
Misread the question by Jer (2005-03-04 18:52:45)
Doesn't seem to work. by Jer (2005-03-04 18:50:00)
Difficulty: 3 of 5Under Marquez's Equation (in Just Math)
Posted on 2005-03-02 (9 Comments)
re: Am I wrong ? Sorry to say. by Jer (2005-03-07 17:04:42)
Some Thoughts interesting... by Jer (2005-03-02 19:01:02)
Difficulty: 3 of 5Under Broken Hypotenuse (in Geometry)
Posted on 2005-02-28 (10 Comments)
re: A possible solution (same result different way) by Jer (2005-02-28 19:03:11)
Difficulty: 3 of 5Under It ain't Fibonacci (in Sequences)
Posted on 2005-02-22 (10 Comments)
Solution (if errors in sequence) by Jer (2005-02-28 17:42:44)
Difficulty: 2 of 5Under Proving a witch weighs the same as a duck (in Tricks)
Posted on 2005-02-21 (12 Comments)
Solution Who says they don't weight the same? (solution) by Jer (2005-02-21 15:05:24)
Difficulty: 5 of 5Under Figure Eights (in General)
Posted on 2005-02-15 (34 Comments)
thoughts and cheats by Jer (2005-02-15 16:43:39)
Difficulty: 2 of 5Under Printer Problems (in General)
Posted on 2005-02-14 (3 Comments)
I got your flippin' solution right here by Jer (2005-02-14 17:06:50)
Difficulty: 2 of 5Under Mowing (in General)
Posted on 2005-02-12 (7 Comments)
questions by Jer (2005-02-14 17:18:14)
Difficulty: 4 of 5Under God and the Devil (in Games)
Posted on 2005-02-08 (62 Comments)
Method of proof? by Jer (2005-02-09 17:09:46)
Difficulty: 3 of 5Under Open = Closed (in Just Math)
Posted on 2005-02-07 (5 Comments)
Given enough steps. (A start?) by Jer (2005-02-07 18:31:24)
Difficulty: 5 of 5Under Pizza Cutter (in Geometry)
Posted on 2005-02-04 (11 Comments)
Conjecture by Jer (2005-02-04 18:19:17)
Difficulty: 3 of 5Under Teetering on the Edge (in General)
Posted on 2005-02-04 (8 Comments)
Ballast (pointer) by Jer (2005-02-04 18:34:37)
Difficulty: 2 of 5Under Sweet Sixteener (in Numbers)
Posted on 2005-02-03 (5 Comments)
re(2): Solution -- wrong -- my dumb typo by Jer (2005-02-03 20:16:44)
Solution Solution by Jer (2005-02-03 17:09:06)
Difficulty: 5 of 5Under Function(Function()) Finding (in Calculus)
Posted on 2005-02-02 (12 Comments)
a g(x) [piecewise] by Jer (2005-02-02 20:09:42)
Some f(x)'s by Jer (2005-02-02 18:50:23)
Difficulty: 2 of 5Under Four Disks (in Geometry)
Posted on 2005-02-02 (5 Comments)
re(2): Initial Thoughts by Jer (2005-02-02 20:12:21)
solution by Jer (2005-02-02 17:32:27)
Difficulty: 2 of 5Under Changing aces (in Probability)
Posted on 2005-01-31 (9 Comments)
Solution Solution by Jer (2005-01-31 14:22:57)
Difficulty: 5 of 5Under One Word, Seven Times (in Word Problems)
Posted on 2005-01-27 (14 Comments)
bacon, eggs by Jer (2005-01-28 12:08:59)
Difficulty: 3 of 5Under The Rule of 72 (in Just Math)
Posted on 2005-01-25 (6 Comments)
re(2): Continuous compounding case by Jer (2005-01-25 18:53:51)
Continuous compounding case by Jer (2005-01-25 18:08:11)
Whole number of years by Jer (2005-01-25 17:46:57)
Difficulty: 3 of 5Under Noisy Code (in Cryptography)
Posted on 2005-01-15 (17 Comments)
I can't quite make it using paint by Jer (2005-01-18 18:38:21)
Difficulty: 3 of 5Under Four Letter Sequences (in Word Problems)
Posted on 2005-01-12 (8 Comments)
Solution Not all common, but... by Jer (2005-01-12 22:02:07)
Difficulty: 3 of 5Under Chord Harmonics (in Just Math)
Posted on 2005-01-11 (9 Comments)
Solution (some cheating) by Jer (2005-01-11 19:47:55)
Difficulty: 4 of 5Under Rummy Luck (in Probability)
Posted on 2005-01-07 (9 Comments)
Second part by Jer (2005-01-07 19:16:50)
re: For the first case by Jer (2005-01-07 18:44:46)
First part by Jer (2005-01-07 18:36:07)
Some Thoughts wow - big problem by Jer (2005-01-07 17:29:01)
Difficulty: 3 of 5Under Box game (in Games)
Posted on 2005-01-04 (31 Comments)
No Subject by Jer (2005-01-05 18:57:12)
Difficulty: 3 of 5Under Prime divisors (in Just Math)
Posted on 2005-01-04 (11 Comments)
re(2): A further analysis (my oopsies) by Jer (2005-01-04 19:11:40)
A further analysis by Jer (2005-01-04 18:20:26)
Difficulty: 4 of 5Under Circle and Spots (in Geometry)
Posted on 2004-12-27 (9 Comments)
Solution I like the surprise by Jer (2004-12-27 21:50:14)
Difficulty: 4 of 5Under A Square Problem (in Shapes)
Posted on 2004-12-26 (17 Comments)
re: Where To Place The Square by Jer (2004-12-26 18:03:58)
Some Thoughts Probable solution by Jer (2004-12-26 17:48:38)
Difficulty: 3 of 5Under Math Class (in Numbers)
Posted on 2004-12-23 (9 Comments)
Solution Solution by Jer (2004-12-23 22:03:43)
Difficulty: 1 of 5Under Another Simple Sequence (in Sequences)
Posted on 2004-12-22 (10 Comments)
Solution Why not ask why not why? by Jer (2004-12-22 16:58:08)
Difficulty: 4 of 5Under Construct Ellipse Axes (in Geometry)
Posted on 2004-12-21 (4 Comments)
re: Solution (Nice) by Jer (2004-12-21 18:23:40)
Unproven/Incomplete solution by Jer (2004-12-21 18:08:51)
Difficulty: 3 of 5Under Rational Result? Ridiculous! (in Numbers)
Posted on 2004-12-20 (19 Comments)
re(2): My solution by Jer (2004-12-20 18:57:36)
re(4): I may have a solution, but... by Jer (2004-12-20 18:12:53)
Solution My solution by Jer (2004-12-20 17:09:14)
re(2): I may have a solution, but... by Jer (2004-12-20 17:04:11)
Difficulty: 2 of 5Under Guess my Number (in Logic)
Posted on 2004-12-20 (32 Comments)
re: Another simpler solution? by Jer (2004-12-20 18:53:29)
Difficulty: 2 of 5Under Points and Planes (in Geometry)
Posted on 2004-12-17 (10 Comments)
I'm pretty sure... by Jer (2004-12-17 17:13:50)
Difficulty: 2 of 5Under Sequence of Musical Tones (in Algorithms)
Posted on 2004-12-14 (20 Comments)
Yeah, but I did it by hand (and other questions) by Jer (2004-12-14 19:09:12)
Difficulty: 3 of 5Under Disk Division (in Geometry)
Posted on 2004-12-09 (17 Comments)
re: Solution (picture) by Jer (2004-12-09 18:13:58)
Difficulty: 2 of 5Under Multi-Logarithms (in Just Math)
Posted on 2004-12-08 (10 Comments)
re: Generalization by Jer (2004-12-09 17:31:15)
Difficulty: 4 of 5Under Rumor Mill (in Probability)
Posted on 2004-12-03 (13 Comments)
Stat. analysis of Charlie's part 2 by Jer (2004-12-03 18:41:21)
Difficulty: 4 of 5Under Bully For You (in Shapes)
Posted on 2004-12-02 (5 Comments)
Full solution by Jer (2004-12-02 18:05:24)
Difficulty: 3 of 5Under Sequence of Squares 2 (in Sequences)
Posted on 2004-12-01 (3 Comments)
Solution A different solution by Jer (2004-12-01 17:47:18)
Difficulty: 5 of 5Under Ellipses and Circles (in Geometry)
Posted on 2004-11-29 (6 Comments)
Belated reply by Jer (2015-05-27 09:48:53)
re(2): As far as I plan to get [I'm silly!] [stop me!] by Jer (2004-11-30 18:52:44)
Solution re: As far as I plan to get [I'm silly!] by Jer (2004-11-29 19:30:44)
Some Thoughts As far as I plan to get by Jer (2004-11-29 19:19:37)
Difficulty: 3 of 5Under Center Digits (in Numbers)
Posted on 2004-11-28 (15 Comments)
the leading zeroes solutions by Jer (2004-11-29 17:08:37)
Difficulty: 2 of 5Under Find Friendly Fractions! (in Just Math)
Posted on 2004-11-24 (14 Comments)
What you're getting at? by Jer (2004-11-24 14:40:25)
Difficulty: 4 of 5Under Year by Year (in Numbers)
Posted on 2004-11-23 (8 Comments)
Or use a really big calculator... by Jer (2004-11-23 17:33:37)
Difficulty: 3 of 5Under I think this is a good riddle, but hey, everyone's a critic (in Riddles)
Posted on 2004-11-18 (70 Comments)
my criticism (& solution, too) by Jer (2004-11-18 17:08:41)
Difficulty: 5 of 5Under Next Numbers Please #4 (in Sequences)
Posted on 2004-11-16 (13 Comments)
Solution Solution (if errors in problem) by Jer (2004-11-19 20:24:48)
A little headway! by Jer (2004-11-19 17:38:08)
Difficulty: 4 of 5Under Kool Numbers (in Numbers)
Posted on 2004-11-15 (10 Comments)
Some Thoughts Second part by Jer (2004-11-15 14:28:22)
Difficulty: 2 of 5Under Leaps of Faith (in Sequences)
Posted on 2004-11-15 (12 Comments)
Solution Clarified (?) solution by Jer (2004-11-15 12:28:50)
Difficulty: 3 of 5Under Tin Can Company (in General)
Posted on 2004-11-12 (11 Comments)
What are we buying again? by Jer (2004-11-12 13:26:00)
Difficulty: 3 of 5Under Missing Digits (in Numbers)
Posted on 2004-11-10 (7 Comments)
Until I have time by Jer (2004-11-10 14:22:24)
Difficulty: 3 of 5Under What comes next? (in Sequences)
Posted on 2004-11-09 (9 Comments)
re: Another different solution by Jer (2004-11-10 12:29:21)
Different solution (almost) by Jer (2004-11-09 12:20:07)
Difficulty: 3 of 5Under Four Way Smarties (in General)
Posted on 2004-11-05 (22 Comments)
Solution Full Solution by Jer (2004-11-05 13:00:36)
Difficulty: 2 of 5Under Nice Weather (in Just Math)
Posted on 2004-11-02 (11 Comments)
Solution Linear algebra solution by Jer (2004-11-02 17:11:29)
Difficulty: 3 of 5Under 2-way maze (in General)
Posted on 2004-11-01 (20 Comments)
7x7 non-minimized by Jer (2004-11-01 17:55:53)
Difficulty: 3 of 5Under Triangular Coordinates (in Numbers)
Posted on 2004-10-26 (11 Comments)
Some Thoughts Do I understand the problem? by Jer (2004-10-26 17:33:44)
Difficulty: 3 of 5Under Octagon in a Circle (in Geometry)
Posted on 2004-10-25 (6 Comments)
Exact solution by Jer (2004-10-25 16:58:53)
Difficulty: 3 of 5Under No Rotation Dissection (in Shapes)
Posted on 2004-10-19 (25 Comments)
re: Solution (really!) - Nice!!! by Jer (2004-10-22 16:20:39)
re: One possible Solution (visual) - No by Jer (2004-10-20 11:36:29)
This is hard to do by Jer (2004-10-19 18:15:21)
Difficulty: 4 of 5Under Circles Abound (2) (in Geometry)
Posted on 2004-10-17 (11 Comments)
Driving me nuts... by Jer (2004-10-18 18:16:01)
Difficulty: 3 of 5Under Square Perfection (in Shapes)
Posted on 2004-10-16 (4 Comments)
Getting dizzy by Jer (2004-10-18 16:24:22)
Difficulty: 2 of 5Under The Sum of the Parts Is Less Than And More Than the Parts (in Numbers)
Posted on 2004-10-15 (11 Comments)
Proof by Jer (2004-10-15 17:08:32)
Difficulty: 2 of 5Under Equiangular Hexagons (in Shapes)
Posted on 2004-10-15 (8 Comments)
Solutions + Exp's by Jer (2004-10-15 16:30:33)
Difficulty: 3 of 5Under Imperfect Square (in Shapes)
Posted on 2004-10-14 (8 Comments)
re(3): Method for solving this type of dissection problem by Jer (2004-10-15 16:00:15)
re: Method for solving this type of dissection problem by Jer (2004-10-14 16:37:39)
Method for solving this type of dissection problem by Jer (2004-10-14 16:15:13)
Difficulty: 4 of 5Under Flipping Coins (in Probability)
Posted on 2004-10-13 (26 Comments)
Solution to second part by Jer (2004-10-13 17:46:16)
Difficulty: 2 of 5Under Curious Cubic Calculation? (in Numbers)
Posted on 2004-10-13 (14 Comments)
re: Answer + Solution by Jer (2004-10-13 16:13:16)
Solution I way I see it by Jer (2004-10-13 16:03:57)
Difficulty: 3 of 5Under Zquare (in Shapes)
Posted on 2004-10-10 (23 Comments)
2 cuts, 3 pieces, symmetry by Jer (2004-10-12 16:58:49)
Difficulty: 3 of 5Under Candy Box (in Numbers)
Posted on 2004-10-08 (17 Comments)
My guess by Jer (2004-10-08 12:58:18)
Difficulty: 3 of 5Under Rare Rotative Relationship! (in Numbers)
Posted on 2004-09-23 (13 Comments)
The algebraic way by Jer (2004-09-27 13:11:37)
Solutions with interpretations by Jer (2004-09-23 13:16:29)
Difficulty: 3 of 5Under No Safety from the Queen (in General)
Posted on 2004-09-23 (13 Comments)
A075324 by Jer (2004-09-23 12:17:40)
Difficulty: 3 of 5Under More Archery Practice (in Numbers)
Posted on 2004-09-21 (14 Comments)
re: Answer (2 Questions on interpretation) by Jer (2004-09-21 13:21:22)
Difficulty: 4 of 5Under Get one half by squaring (in Just Math)
Posted on 2004-09-20 (31 Comments)
re: The best that my program can do by Jer (2004-09-21 13:12:31)
Can it be done? by Jer (2004-09-20 13:33:25)
Difficulty: 3 of 5Under A pool rack filled with balls (in Geometry)
Posted on 2004-09-17 (25 Comments)
Unlimited Balls by Jer (2004-09-17 13:13:32)
Difficulty: 2 of 5Under Third Squared (in Shapes)
Posted on 2004-09-15 (7 Comments)
re: partial explanation by Jer (2004-10-12 16:15:01)
Difficulty: 5 of 5Under Partitioning Space (in Geometry)
Posted on 2004-09-13 (13 Comments)
Some Thoughts Part 2 solution? by Jer (2004-09-13 14:11:37)
Difficulty: 1 of 5Under Bacon and Eggs (in Riddles)
Posted on 2004-09-10 (69 Comments)
I only like easy riddles... by Jer (2004-09-10 11:58:14)
Difficulty: 4 of 5Under Measure that angle III (in Geometry)
Posted on 2004-09-07 (25 Comments)
Best I could do by Jer (2004-09-08 12:40:50)
Difficulty: 3 of 5Under Waiting, waiting... (in Probability)
Posted on 2004-08-07 (19 Comments)
Realistically by Jer (2015-06-16 08:57:44)
Difficulty: 4 of 5Under Poker Hands (in Probability)
Posted on 2004-07-09 (11 Comments)
Straight Flush by Jer (2004-07-09 15:59:10)
5 of a kind by Jer (2004-07-09 15:47:50)
Difficulty: 5 of 5Under Parking Cars (in Probability)
Posted on 2004-07-01 (14 Comments)
fixed 2 by Jer (2004-07-02 15:15:23)
Next step by Jer (2004-07-01 14:50:39)
Difficulty: 3 of 5Under Consecutive Integer Sums (in Numbers)
Posted on 2004-06-28 (22 Comments)
A start by Jer (2004-06-28 16:51:34)
Difficulty: 4 of 5Under Class Pass (in Probability)
Posted on 2004-06-24 (15 Comments)
3x3 and 3x4 grids by Jer (2006-02-27 14:51:44)
what probability? by Jer (2004-06-24 14:30:38)
Difficulty: 2 of 5Under Maze Master (in Algorithms)
Posted on 2004-06-21 (12 Comments)
Straight forward way by Jer (2004-06-21 13:55:08)
Difficulty: 3 of 5Under Musical Munchies (in Sequences)
Posted on 2004-06-18 (15 Comments)
Sequences tend to be hard don't they by Jer (2004-06-18 15:18:45)
Difficulty: 2 of 5Under Short equation (in Numbers)
Posted on 2004-06-17 (13 Comments)
Solution Solution if formatting works by Jer (2004-06-17 08:29:11)
Difficulty: 2 of 5Under The Tournament (in Games)
Posted on 2004-06-15 (12 Comments)
Solution So why not do it the hard way? by Jer (2004-06-15 09:09:21)
Difficulty: 3 of 5Under Mikhail's Sequence (in Sequences)
Posted on 2004-06-13 (12 Comments)
Solution based on Tim C's idea by Jer (2004-06-15 09:54:14)
Difficulty: 3 of 5Under Another Point In A Square (in Geometry)
Posted on 2004-06-11 (16 Comments)
re: Solution - another method -Nice! by Jer (2004-06-11 12:04:19)
Subject lines aren't editable, are they? by Jer (2004-06-11 09:44:37)
re: Solution (unproven) by Jer (2004-06-11 09:32:00)
Solution (unproven) by Jer (2004-06-11 09:13:13)
Difficulty: 3 of 5Under Twenty-four (in Numbers)
Posted on 2004-06-09 (7 Comments)
re: Well done, Jer. by Jer (2004-06-09 10:11:55)
Here's a second by Jer (2004-06-09 09:37:02)
One down... (1/2 of 2 solutions) by Jer (2004-06-09 09:35:47)
Difficulty: 3 of 5Under Problematic Pathways (in General)
Posted on 2004-06-08 (8 Comments)
Nothing new but want to add 2 cents by Jer (2004-06-08 12:18:29)
Difficulty: 5 of 5Under Bird on a Wire (in Just Math)
Posted on 2004-06-07 (42 Comments)
What the problem is asking by Jer (2004-06-09 09:17:35)
Difficulty: 2 of 5Under The Tour (in General)
Posted on 2004-06-04 (10 Comments)
Solution Solution by Jer (2004-06-04 09:23:09)
Difficulty: 2 of 5Under Gloves (in Numbers)
Posted on 2004-06-03 (30 Comments)
Different solution? by Jer (2004-06-03 09:21:01)
Difficulty: 4 of 5Under Hexagonal Dilemma (in Geometry)
Posted on 2004-06-02 (18 Comments)
Is there a more satisfying solution? by Jer (2004-06-03 07:25:54)
A first step by Jer (2004-06-02 14:29:04)
Difficulty: 2 of 5Under Linked Rings (in Geometry)
Posted on 2004-05-29 (19 Comments)
Make mine a Borromean Ale. by Jer (2004-05-29 16:07:19)
Difficulty: 2 of 5Under The Fur Dresser's Mistake (in Geometry)
Posted on 2004-05-28 (12 Comments)
Both Brian Smith's and rixar's work by Jer (2004-05-29 15:53:26)
No Subject by Jer (2004-05-28 14:48:08)
Difficulty: 2 of 5Under The Monkey Tail Hunter (in Science)
Posted on 2004-05-28 (15 Comments)
Ah, college days... by Jer (2004-05-28 12:18:29)
Difficulty: 3 of 5Under Square Circles (in Geometry)
Posted on 2004-05-27 (24 Comments)
Crossing my fingers by Jer (2004-05-28 14:36:14)
re(2): Fewer than I thought by Jer (2004-05-28 10:21:32)
Solution Fewer than I thought by Jer (2004-05-28 09:44:39)
Difficulty: 3 of 5Under Moving Day (in Calculus)
Posted on 2004-05-26 (31 Comments)
re: Agreement with F.K. - Fixed by Jer (2004-05-28 08:59:28)
Agreement with F.K. by Jer (2004-05-27 10:16:11)
Difficulty: 3 of 5Under Ten Words (in Word Problems)
Posted on 2004-05-26 (9 Comments)
How to cheat by Jer (2004-05-26 09:13:39)
Difficulty: 4 of 5Under Answer Machine Hacking (in Algorithms)
Posted on 2004-05-24 (11 Comments)
Some Thoughts A guess by Jer (2004-05-24 14:28:41)
Difficulty: 3 of 5Under Cabin Fever (in Tricks)
Posted on 2004-05-24 (8 Comments)
re: Easy by Jer (2004-05-24 09:33:44)
Difficulty: 2 of 5Under Faulty Scales (in Weights and Scales)
Posted on 2004-05-23 (8 Comments)
Solution Easiest way. by Jer (2004-05-24 09:28:23)
Difficulty: 2 of 5Under Fraction Magic Square (in Numbers)
Posted on 2004-05-22 (6 Comments)
Too easy? by Jer (2004-05-24 09:13:13)
Difficulty: 3 of 5Under A Coin Game (in Probability)
Posted on 2004-05-20 (11 Comments)
Solution Assuming .5 solution by Jer (2004-05-20 14:19:31)
Question flip vs spin by Jer (2004-05-20 14:08:34)
Difficulty: 3 of 5Under Pythagorean Plus One (in Numbers)
Posted on 2004-05-17 (20 Comments)
Hen's eggs by Jer (2004-05-17 12:26:56)
Difficulty: 2 of 5Under upside-down (in Word Problems)
Posted on 2004-05-14 (9 Comments)
Worse solution by Jer (2004-05-14 12:14:42)
Difficulty: 3 of 5Under Powers of powers (in Calculus)
Posted on 2004-05-11 (11 Comments)
re: Power Tower by Jer (2004-05-12 07:20:45)
Yikes by Jer (2004-05-11 09:42:02)
Difficulty: 4 of 5Under Would you like to play a game? (in General)
Posted on 2004-05-10 (13 Comments)
re: Doubling case Solved by Jer (2004-05-10 22:13:28)
re: Doubling case Solved by Jer (2004-05-10 22:13:26)
Doubling case started. by Jer (2004-05-10 14:47:50)
re: Is there any way... by Jer (2004-05-10 14:31:28)
Difficulty: 2 of 5Under 'Plexus pleaser (in General)
Posted on 2004-05-08 (24 Comments)
re(2): Get your own problem! (sorry to be so harsh) by Jer (2004-05-10 14:22:26)
Get your own problem! by Jer (2004-05-10 12:08:45)
Difficulty: 3 of 5Under The Bun Problem (in Shapes)
Posted on 2004-05-07 (26 Comments)
The Problem with Sprinkling Spheres by Jer (2004-05-10 10:24:45)
Difficulty: 2 of 5Under Particle Acceleration (in General)
Posted on 2004-05-06 (24 Comments)
Possible solution by Jer (2004-05-06 09:51:54)
Difficulty: 1 of 5Under kst (in Tricks)
Posted on 2004-05-03 (14 Comments)
re: Solution by Jer (2004-05-03 12:03:36)
Difficulty: 2 of 5Under Ship Shape (in General)
Posted on 2004-04-30 (7 Comments)
errr... by Jer (2004-04-30 09:00:39)
Difficulty: 1 of 5Under Cutting a cube (in Shapes)
Posted on 2004-04-28 (6 Comments)
Solution by Jer (2004-04-28 10:16:51)
Difficulty: 3 of 5Under Pythagorean Pyramid (in Geometry)
Posted on 2004-04-26 (15 Comments)
Another View by Jer (2004-04-26 12:11:38)
Difficulty: 1 of 5Under Wonder Words (in Word Problems)
Posted on 2004-04-22 (8 Comments)
re: No Subject by Jer (2004-04-26 10:05:13)
Difficulty: 2 of 5Under The Central Cell (in Games)
Posted on 2004-04-16 (11 Comments)
Solution to part 1 by Jer (2004-04-16 14:16:44)
Difficulty: 2 of 5Under What are you doing and where are you from? (in Word Problems)
Posted on 2004-04-14 (40 Comments)
One more solution by Jer (2004-04-15 15:33:05)
Difficulty: 2 of 5Under Who's the odd one out? (in Word Problems)
Posted on 2004-04-10 (37 Comments)
Before I check others... by Jer (2004-04-11 17:03:15)
Difficulty: 2 of 5Under Cars on the road (in Probability)
Posted on 2004-04-09 (20 Comments)
Solution by Jer (2004-04-09 12:13:22)
Difficulty: 2 of 5Under A flat ball? (in Geometry)
Posted on 2004-04-08 (24 Comments)
An interesting link (non-regular) by Jer (2004-05-03 09:43:05)
re(2): Johnson solids by Jer (2004-04-27 14:24:22)
Johnson solids by Jer (2004-04-15 12:03:24)
re: The 720 degree deficit by Jer (2004-04-12 09:47:25)
re(2): Hint in the title? by Jer (2004-04-09 14:10:40)
Hint in the title? by Jer (2004-04-09 09:37:29)
Difficulty: 1 of 5Under Half Squared (in Shapes)
Posted on 2004-04-08 (12 Comments)
re(3): Variation: Nice Stan by Jer (2004-04-15 12:07:43)
re(3): Variation: by Jer (2004-04-08 12:12:14)
re: Variation: by Jer (2004-04-08 09:52:16)
Solution by Jer (2004-04-08 09:26:56)
Difficulty: 2 of 5Under Vowel Deficit (in Word Problems)
Posted on 2004-04-07 (22 Comments)
One syllable solution by Jer (2004-04-07 09:21:12)
Difficulty: 3 of 5Under Disjointification (in Just Math)
Posted on 2004-04-04 (12 Comments)
Solution? Too simple? by Jer (2004-04-05 09:40:42)
Difficulty: 2 of 5Under A Family Gathering (in General)
Posted on 2004-03-31 (10 Comments)
One way of looking at this by Jer (2004-03-31 09:07:18)
Difficulty: 3 of 5Under Birthday Line (in Probability)
Posted on 2004-03-29 (21 Comments)
re(3): Function [with observations] by Jer (2004-04-02 14:32:18)
re: Random Guess by Jer (2004-03-31 12:19:22)
re: Function [with observations] by Jer (2004-03-31 12:16:10)
Difficulty: 3 of 5Under Moving Quarters (in General)
Posted on 2004-03-26 (23 Comments)
re: 5 move solution by Jer (2004-03-26 14:30:15)
5 move solution by Jer (2004-03-26 14:22:11)
Difficulty: 2 of 5Under 3-d grid hunting (in Shapes)
Posted on 2004-03-25 (7 Comments)
re(3): question? -My bad by Jer (2004-03-29 12:19:21)
re: question? by Jer (2004-03-26 12:20:52)
Difficulty: 1 of 5Under The magic Number (in Numbers)
Posted on 2004-03-17 (35 Comments)
Source of confusion by Jer (2004-03-19 12:28:38)
Difficulty: 3 of 5Under Truncated Cube (in Shapes)
Posted on 2004-03-04 (7 Comments)
re: Solution by Jer (2004-03-04 12:25:16)
Difficulty: 3 of 5Under Lead Floats (in Science)
Posted on 2004-02-25 (33 Comments)
A few more ideas by Jer (2004-02-26 09:10:29)
Difficulty: 3 of 5Under Don't Talk About Yourself (in General)
Posted on 2004-02-01 (14 Comments)
Infinite number of similar statements. by Jer (2014-05-02 16:08:16)
Difficulty: 3 of 5Under Flat Out (in General)
Posted on 2003-12-17 (23 Comments)
Gimme a nickel... by Jer (2005-02-07 17:27:31)
Difficulty: 2 of 5Under Weights (in Weights and Scales)
Posted on 2003-06-23 (12 Comments)
units by Jer (2005-03-10 17:20:03)
Difficulty: 3 of 5Under Just Keep the Change (in Numbers)
Posted on 2003-06-15 (13 Comments)
Alternate solution and thoughts by Jer (2016-03-24 13:38:53)
Difficulty: 2 of 5Under 2,000,000 Coin Tosses (in Probability)
Posted on 2003-03-03 (10 Comments)
exact solution for 400 tosses by Jer (2009-05-28 14:34:59)
Difficulty: 2 of 5Under Products of 22 (in Just Math)
Posted on 2002-12-23 (7 Comments)
re(2): Solution by ananth by Jer (2004-05-03 12:10:11)
Difficulty: 2 of 5Under Share! (in Riddles)
Posted on 2002-12-02 (18 Comments)
Comment on posted solution by Jer (2004-04-29 15:23:20)
Difficulty: 2 of 5Under A locked 7-11?! (in Riddles)
Posted on 2002-11-11 (27 Comments)
Grand opening by Jer (2004-12-10 17:22:57)
Difficulty: 1 of 5Under Trig trick (in Just Math)
Posted on 2002-11-07 (13 Comments)
By definition by Jer (2012-12-21 17:45:47)
Difficulty: 2 of 5Under Feet make you smarter? (in Riddles)
Posted on 2002-09-03 (14 Comments)
adidas v. nike by Jer (2005-03-14 16:58:30)
Difficulty: 1 of 5Under More Logs (in Just Math)
Posted on 2002-06-17 (14 Comments)
re: how about this one? :p by Jer (2005-10-14 17:00:00)
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