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Comment Search results for posted by Brian Smith :
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Difficulty: 3 of 5Under Two-three integers (in Numbers)
Posted on 2017-10-15 (6 Comments)
re(2): Analytic Solution by Brian Smith (2017-10-15 21:54:25)
Solution Analytic Solution by Brian Smith (2017-10-15 17:58:37)
Difficulty: 3 of 5Under Does it continue? 6: Partial sums (in Numbers)
Posted on 2017-09-25 (7 Comments)
Some Thoughts re: Notes by Brian Smith (2017-10-05 14:14:49)
Difficulty: 3 of 5Under Does it continue? 5: powers of 2 (in Numbers)
Posted on 2017-09-24 (6 Comments)
Solution Solution Showcasing Several Sequences by Brian Smith (2017-09-25 09:38:53)
Difficulty: 3 of 5Under Does it continue? 3: Growing table of primes (in Numbers)
Posted on 2017-09-19 (3 Comments)
A classic puzzle by Brian Smith (2017-09-19 23:23:09)
Difficulty: 4 of 5Under Product of 100 factorials (in Just Math)
Posted on 2017-09-07 (8 Comments)
Some Thoughts Smallest divisor by Brian Smith (2017-09-08 23:21:36)
Difficulty: 3 of 5Under Getting closer to your pie (in Numbers)
Posted on 2017-09-04 (10 Comments)
Some Thoughts Part c without trig by Brian Smith (2017-09-04 16:40:55)
Difficulty: 2 of 5Under Two sums of digits (in Just Math)
Posted on 2017-09-02 (5 Comments)
Solution re: Both at once - solutions by Brian Smith (2017-09-03 12:53:57)
Some Thoughts Both at once? by Brian Smith (2017-09-02 21:12:54)
Difficulty: 1 of 5Under Triangle in a triangle (in Shapes)
Posted on 2017-08-28 (4 Comments)
re: How about this one? by Brian Smith (2017-08-28 13:23:33)
Difficulty: 3 of 5Under Strobogrammatic to pandigital (in Numbers)
Posted on 2017-08-26 (4 Comments)
Hints/Tips An answer by Brian Smith (2017-08-26 09:01:52)
Difficulty: 2 of 5Under A pint, please. (in General)
Posted on 2017-08-20 (3 Comments)
Solution An international way by Brian Smith (2017-08-20 08:51:39)
Difficulty: 4 of 5Under Marbles in boxes (in Algorithms)
Posted on 2017-08-16 (5 Comments)
Some Thoughts re: solution - OEIS by Brian Smith (2017-08-17 11:11:25)
Difficulty: 3 of 5Under Bob and Alice make a poor choice (in Numbers)
Posted on 2017-08-11 (7 Comments)
Solution re: Method? by Brian Smith (2017-08-11 23:30:26)
re: solution (spoiler) - precision check by Brian Smith (2017-08-11 12:52:00)
Difficulty: 3 of 5Under Palindromic sum (in Just Math)
Posted on 2017-08-08 (3 Comments)
Hints/Tips Research findings by Brian Smith (2017-08-09 23:38:44)
Solution Solution using only two palindromes by Brian Smith (2017-08-09 23:22:50)
Difficulty: 2 of 5Under Nondivisibility by 11 (in Just Math)
Posted on 2017-08-06 (2 Comments)
Solution Solution by Brian Smith (2017-08-06 09:48:33)
Difficulty: 3 of 5Under From The Book of Squares (in Numbers)
Posted on 2017-07-26 (5 Comments)
Solution Solution by Brian Smith (2017-07-26 12:36:01)
Difficulty: 2 of 5Under From Mahavira (in Just Math)
Posted on 2017-07-18 (11 Comments)
Hints/Tips re(2): Simple Solution, simple-yes ... correct-Yes by Brian Smith (2017-07-19 08:45:40)
Solution Simple Solution by Brian Smith (2017-07-18 22:15:23)
Difficulty: 3 of 5Under Brazilian numbers (in Sequences)
Posted on 2017-07-15 (4 Comments)
Solution Part 1 Solution and more by Brian Smith (2017-07-15 09:49:24)
Difficulty: 2 of 5Under 4 options (in Probability)
Posted on 2017-07-10 (3 Comments)
Solution Solution by Brian Smith (2017-07-10 21:43:26)
Difficulty: 3 of 5Under Pythagorean H/L ratios (in Just Math)
Posted on 2017-07-08 (2 Comments)
Solution Another approach by Brian Smith (2017-07-09 00:05:16)
Difficulty: 2 of 5Under Larger area / larger perimeter (in Numbers)
Posted on 2017-07-03 (3 Comments)
Solution Analytic Solution by Brian Smith (2017-07-03 23:35:42)
Difficulty: 4 of 5Under 2 kids 3 boxes (in Games)
Posted on 2017-07-01 (1 Comments)
Solution Solution by Brian Smith (2017-07-01 22:15:03)
Difficulty: 2 of 5Under Giveaway ratios (in Numbers)
Posted on 2017-06-26 (3 Comments)
Solution Solution by Brian Smith (2017-06-26 08:34:42)
Difficulty: 3 of 5Under 2017 to start with (in Numbers)
Posted on 2017-06-23 (7 Comments)
re(3): computer results (spoilers) extended by Brian Smith (2017-06-24 17:49:15)
Difficulty: 4 of 5Under Rational number's conversion (in Just Math)
Posted on 2017-06-18 (5 Comments)
Solution Solution by Brian Smith (2017-06-18 20:46:01)
Some Thoughts re: Partial solution by Brian Smith (2017-06-18 12:31:58)
Some Thoughts Partial solution by Brian Smith (2017-06-18 10:52:24)
Difficulty: 3 of 5Under Ulam numbers (in Numbers)
Posted on 2017-06-03 (5 Comments)
What the OEIS says by Brian Smith (2017-06-04 09:42:56)
Difficulty: 3 of 5Under Empty the bucket (in Logic)
Posted on 2017-05-29 (12 Comments)
Some Thoughts re: Still stumped by Brian Smith (2017-06-03 11:14:55)
Difficulty: 3 of 5Under Seven Region Partition (in Shapes)
Posted on 2017-05-27 (3 Comments)
re: Solution? by Brian Smith (2017-05-28 10:31:08)
Difficulty: 4 of 5Under Oleg or Erdös? (in Games)
Posted on 2017-05-26 (8 Comments)
Thoughts by Brian Smith (2017-05-27 09:56:49)
Difficulty: 3 of 5Under Higher Powers of Eleven (in Numbers)
Posted on 2017-05-24 (4 Comments)
Solution Analytic Solution by Brian Smith (2017-05-26 11:36:24)
Difficulty: 2 of 5Under Four balls (in Probability)
Posted on 2017-05-19 (22 Comments)
re: There is only one correct answer !....SPOILER by Brian Smith (2017-05-22 12:05:40)
re(5): Who's right by Brian Smith (2017-05-21 23:17:59)
Hints/Tips re(3): Who's right by Brian Smith (2017-05-21 17:15:20)
Solution Solution by Brian Smith (2017-05-19 12:43:07)
Difficulty: 3 of 5Under Twice blind (in Numbers)
Posted on 2017-05-14 (2 Comments)
Dejavu by Brian Smith (2017-05-14 09:24:47)
Difficulty: 3 of 5Under Dirichlet sends his regards (in Logic)
Posted on 2017-05-12 (4 Comments)
Solution re: A guess - A proof by Brian Smith (2017-05-12 13:28:20)
Difficulty: 3 of 5Under The length of the belt (in Geometry)
Posted on 2017-05-09 (5 Comments)
Solution re: Raising the difficulty to 3 - Full Solution by Brian Smith (2017-05-12 11:23:49)
Difficulty: 3 of 5Under No software allowed ! (in Numbers)
Posted on 2017-05-07 (6 Comments)
re: New solutions not relatively prime by Brian Smith (2017-05-07 19:45:56)
Solution Solution by Brian Smith (2017-05-07 10:09:40)
Difficulty: 3 of 5Under Pandigital + (in Probability)
Posted on 2017-05-03 (3 Comments)
Hints/Tips re: Matrix solution - Diagonalization and a closed form function by Brian Smith (2017-05-04 12:23:54)
Solution Matrix solution by Brian Smith (2017-05-04 09:57:29)
Difficulty: 2 of 5Under A cent or more? (in Probability)
Posted on 2017-05-01 (2 Comments)
Coin distribution by Brian Smith (2017-05-01 10:25:44)
Difficulty: 3 of 5Under Eat as eat can (in Numbers)
Posted on 2017-04-28 (2 Comments)
Solution Answers for each species by Brian Smith (2017-04-28 23:33:56)
Difficulty: 3 of 5Under Baker to butcher to baker (in Just Math)
Posted on 2017-04-27 (2 Comments)
Solution Solution by Brian Smith (2017-04-27 23:33:04)
Difficulty: 3 of 5Under Driven by greed (in General)
Posted on 2017-04-26 (1 Comments)
Solution I got a good haul by Brian Smith (2017-04-26 10:09:47)
Difficulty: 4 of 5Under e as a pandigital expression (in Numbers)
Posted on 2017-04-23 (2 Comments)
Solution Solution using a Limit by Brian Smith (2017-04-23 12:46:45)
Difficulty: 3 of 5Under Maxim, Minerva & Kangaroo (in Numbers)
Posted on 2017-04-22 (4 Comments)
Solution Solution by Brian Smith (2017-04-22 12:59:24)
Difficulty: 3 of 5Under Cryptajoke XVII (in Numbers)
Posted on 2017-04-21 (6 Comments)
Solution Two Answers by Brian Smith (2017-04-21 09:55:24)
Difficulty: 3 of 5Under Is it a conic? (in Geometry)
Posted on 2017-04-19 (7 Comments)
Solution Another approach by Brian Smith (2017-04-20 23:41:14)
Difficulty: 2 of 5Under A factorial in seconds (in Numbers)
Posted on 2017-04-18 (6 Comments)
Solution Analytic Solution by Brian Smith (2017-04-18 09:49:54)
Difficulty: 2 of 5Under Sticks in a Cube (in Shapes)
Posted on 2017-04-11 (3 Comments)
re: Solution by Brian Smith (2017-04-14 09:29:30)
Difficulty: 3 of 5Under Names in Boxes (in Logic)
Posted on 2017-04-09 (10 Comments)
re(2): Loops by Brian Smith (2017-04-12 13:08:19)
Solution Loops by Brian Smith (2017-04-12 10:11:43)
Difficulty: 3 of 5Under Excellent numbers (in Numbers)
Posted on 2017-04-08 (3 Comments)
Hints/Tips Going further by Brian Smith (2017-04-09 14:59:16)
Solution 12 digit excellence by Brian Smith (2017-04-08 21:43:59)
Difficulty: 2 of 5Under Y ask about Y ? (in Numbers)
Posted on 2017-04-04 (5 Comments)
re(2): Another approach by Brian Smith (2017-04-13 09:22:02)
Solution Another approach by Brian Smith (2017-04-04 12:25:42)
Difficulty: 2 of 5Under S.o.S is S (in Numbers)
Posted on 2017-04-03 (6 Comments)
Solution Cannonball! by Brian Smith (2017-04-03 23:34:59)
Difficulty: 3 of 5Under Prime power puzzle (in Just Math)
Posted on 2017-04-01 (8 Comments)
Hints/Tips Found Five by Brian Smith (2017-04-02 21:17:20)
Difficulty: 4 of 5Under Murder in the Castle (in Logic)
Posted on 2017-03-30 (4 Comments)
Solution re: (a not so) little hint - My solution by Brian Smith (2017-04-30 13:07:49)
Difficulty: 3 of 5Under The sum of 2016 terms (in Sequences)
Posted on 2017-03-21 (1 Comments)
Solution Solution by Brian Smith (2017-03-21 09:42:36)
Difficulty: 3 of 5Under Same side story (in Probability)
Posted on 2017-03-16 (5 Comments)
Hints/Tips A classic puzzle by Brian Smith (2017-03-29 13:37:53)
Difficulty: 3 of 5Under Equality? Yes, but not exactly... (in Numbers)
Posted on 2017-03-14 (1 Comments)
Solution Solution by Brian Smith (2017-03-14 11:03:31)
Difficulty: 2 of 5Under Three heights in a triangle (in Geometry)
Posted on 2017-03-11 (2 Comments)
Solution Answer by Brian Smith (2017-03-21 09:33:08)
Difficulty: 3 of 5Under 1 progression, 2 sums, 3 numbers (in Just Math)
Posted on 2017-03-09 (1 Comments)
Solution Solution by Brian Smith (2017-03-09 10:44:30)
Difficulty: 3 of 5Under Problem on its own (in Geometry)
Posted on 2017-03-05 (1 Comments)
Solution So simple! by Brian Smith (2017-05-05 11:49:11)
Difficulty: 3 of 5Under Integer triplets (in Just Math)
Posted on 2017-02-21 (4 Comments)
Solution Solution by Brian Smith (2017-02-22 10:03:47)
Difficulty: 3 of 5Under The toll of two cities (in Geometry)
Posted on 2017-02-20 (1 Comments)
Solution Solution by Brian Smith (2017-02-20 10:08:15)
Difficulty: 3 of 5Under Odds are ... (in Probability)
Posted on 2017-02-14 (8 Comments)
Hints/Tips A related problem which resolves part 2. by Brian Smith (2017-02-14 11:27:25)
Difficulty: 2 of 5Under Integer couples (in Numbers)
Posted on 2017-02-06 (1 Comments)
Dejavu by Brian Smith (2017-02-06 09:42:00)
Difficulty: 3 of 5Under T better than S (in Famous Riddles)
Posted on 2017-02-02 (2 Comments)
Solution Answer by Brian Smith (2017-02-02 09:20:05)
Difficulty: 4 of 5Under A false conjecture (in Numbers)
Posted on 2017-01-27 (7 Comments)
Hints/Tips I found it! by Brian Smith (2017-01-29 13:49:28)
Difficulty: 3 of 5Under Powers of x and y (in Just Math)
Posted on 2017-01-21 (3 Comments)
Solution Solution by Brian Smith (2017-01-21 14:58:35)
Difficulty: 3 of 5Under An interesting recurrence (in Numbers)
Posted on 2017-01-17 (5 Comments)
A number worth looking for? by Brian Smith (2017-01-17 23:22:51)
Difficulty: 3 of 5Under (x−y)^ n = xy (in Just Math)
Posted on 2017-01-07 (2 Comments)
Solution Solution by Brian Smith (2017-01-07 20:44:53)
Difficulty: 4 of 5Under Congruent Incircles (in Geometry)
Posted on 2017-01-01 (6 Comments)
re: Solution by construction by Brian Smith (2017-01-01 19:04:14)
Difficulty: 3 of 5Under Sphere-Cone (in Calculus)
Posted on 2016-12-25 (2 Comments)
Solution Solution by Brian Smith (2016-12-25 12:33:20)
Difficulty: 4 of 5Under No change in its value (in Numbers)
Posted on 2016-12-23 (1 Comments)
Solution Printer's Error Numbers by Brian Smith (2017-07-01 13:30:46)
Difficulty: 2 of 5Under Same Real Roots (in Just Math)
Posted on 2016-12-10 (2 Comments)
Solution Solution by Brian Smith (2016-12-10 09:54:13)
Difficulty: 2 of 5Under composite function (in Calculus)
Posted on 2016-11-29 (2 Comments)
Solution Solution by Brian Smith (2016-11-29 11:05:23)
Difficulty: 2 of 5Under Prime repunits (in Numbers)
Posted on 2016-11-24 (4 Comments)
Some Thoughts Almost a proof by Brian Smith (2016-11-24 21:14:05)
Difficulty: 3 of 5Under On the same floor (in Just Math)
Posted on 2016-11-22 (13 Comments)
Solution Solutions per Integer by Brian Smith (2016-11-22 13:37:25)
Difficulty: 1 of 5Under Don't be confused (in General)
Posted on 2016-11-14 (4 Comments)
Solution Solution by Brian Smith (2016-11-14 11:13:44)
Difficulty: 3 of 5Under Matrix Mathematics (in Just Math)
Posted on 2016-10-30 (1 Comments)
Solution Solution by Brian Smith (2016-10-30 10:07:00)
Difficulty: 3 of 5Under Rationality certification (in Just Math)
Posted on 2016-10-27 (2 Comments)
Some Thoughts sqrt(a) is rational by Brian Smith (2016-10-28 10:37:30)
Difficulty: 4 of 5Under Inequality challenge (in Just Math)
Posted on 2016-10-25 (4 Comments)
Some Thoughts Approaching sqrt(3) by Brian Smith (2016-11-20 10:57:55)
Solution re(2): Thoughts...Hints...Proof by Brian Smith (2016-11-19 12:18:00)
Thoughts by Brian Smith (2016-11-16 12:40:04)
Difficulty: 3 of 5Under A little twist (in Just Math)
Posted on 2016-10-21 (4 Comments)
Solution Analytic Solution by Brian Smith (2017-05-05 09:56:47)
Difficulty: 3 of 5Under Ratio Resolution IV (in Weights and Scales)
Posted on 2016-10-20 (3 Comments)
Solution Solution by Brian Smith (2017-07-24 20:27:09)
Difficulty: 3 of 5Under Bridge Cross Baffle (in Logic)
Posted on 2016-10-10 (3 Comments)
Solution Comparing methods by Brian Smith (2016-10-10 12:38:04)
Difficulty: 3 of 5Under Nine Hexominos in a Square (in Shapes)
Posted on 2016-10-07 (2 Comments)
re: Request for hint by Brian Smith (2016-10-09 18:02:37)
Difficulty: 3 of 5Under Random Trial (in Algorithms)
Posted on 2016-10-02 (3 Comments)
Some Thoughts My approach by Brian Smith (2016-12-31 23:33:43)
Difficulty: 3 of 5Under Lopsided T-Hexomino (in Shapes)
Posted on 2016-09-09 (2 Comments)
re: Request for a hint (Spoiler) by Brian Smith (2016-09-11 15:10:20)
Difficulty: 3 of 5Under Form Finding From Solution (in Just Math)
Posted on 2016-09-05 (2 Comments)
re: seems to be a solution by Brian Smith (2016-09-05 12:56:31)
Difficulty: 3 of 5Under Bonne chance (in Logic)
Posted on 2016-09-02 (2 Comments)
Solution Solving Backwards by Brian Smith (2016-09-03 11:09:25)
Difficulty: 3 of 5Under Polygon Area Ponder (in Shapes)
Posted on 2016-09-01 (2 Comments)
re: Solution by Brian Smith (2016-09-01 23:17:59)
Difficulty: 3 of 5Under Ten L-Hexominos (in Shapes)
Posted on 2016-08-31 (3 Comments)
Hints/Tips re: I'd like a hint by Brian Smith (2016-09-01 23:13:34)
Difficulty: 3 of 5Under Complex Number and Positive Integer Poser (in Just Math)
Posted on 2016-08-27 (1 Comments)
Solution Solution by Brian Smith (2017-07-16 23:16:42)
Difficulty: 3 of 5Under All rational numbers in (in Sequences)
Posted on 2016-08-26 (10 Comments)
OEIS by Brian Smith (2016-08-27 10:46:54)
Difficulty: 2 of 5Under Business is business (in Word Problems)
Posted on 2016-08-24 (6 Comments)
Solution ThE AnSWER by Brian Smith (2016-08-24 11:19:28)
Difficulty: 2 of 5Under Estimate a percentage (in Numbers)
Posted on 2016-08-22 (6 Comments)
Some Thoughts Some help from the OEIS by Brian Smith (2017-07-16 23:50:46)
Some Thoughts re: A simple upperbound by Brian Smith (2017-07-16 23:38:06)
Difficulty: 3 of 5Under Diophantine Pair Decision (in Just Math)
Posted on 2016-08-13 (3 Comments)
Hints/Tips OEIS to save the day! by Brian Smith (2016-08-13 21:44:57)
Difficulty: 3 of 5Under Insect Jump Illation (in Just Math)
Posted on 2016-08-09 (1 Comments)
Some research by Brian Smith (2016-10-30 18:25:24)
Difficulty: 3 of 5Under Unearthing Units Digit (in Just Math)
Posted on 2016-08-09 (1 Comments)
Solution Solution by Brian Smith (2017-05-05 23:23:10)
Difficulty: 3 of 5Under Find additional pairs (in Just Math)
Posted on 2016-08-08 (5 Comments)
Solution Pell Solution by Brian Smith (2016-08-09 00:11:46)
Difficulty: 3 of 5Under Quadratic and Linear (in Just Math)
Posted on 2016-08-03 (2 Comments)
Solution Solution by Brian Smith (2017-07-02 22:44:38)
Difficulty: 3 of 5Under Square in a Cone (in Shapes)
Posted on 2016-07-29 (2 Comments)
Some Thoughts Thoughts by Brian Smith (2016-07-30 11:00:40)
Difficulty: 3 of 5Under 15 Triominoes (in Shapes)
Posted on 2016-07-26 (4 Comments)
re: Harder case by Brian Smith (2016-07-27 11:19:17)
Difficulty: 3 of 5Under Table Partition Trial (in Shapes)
Posted on 2016-07-24 (3 Comments)
Some Thoughts 10/11 of the other pentominoes by Brian Smith (2016-07-24 13:06:13)
Difficulty: 3 of 5Under Right and Left Digits (in Just Math)
Posted on 2016-07-17 (1 Comments)
Solution Solution by Brian Smith (2016-07-17 21:51:53)
Difficulty: 3 of 5Under Triangle Cover Treat (in Shapes)
Posted on 2016-07-16 (3 Comments)
Solution Solution by Brian Smith (2016-07-16 10:48:42)
Difficulty: 3 of 5Under Sixty Settlement (in Just Math)
Posted on 2016-07-14 (1 Comments)
Solution Solution from another problem by Brian Smith (2016-07-14 09:54:55)
Difficulty: 3 of 5Under Base N Perfect Square Poser (in Just Math)
Posted on 2016-07-13 (2 Comments)
Solution Solution by Brian Smith (2016-07-14 09:44:30)
Difficulty: 2 of 5Under Prove SG's theorem (in Just Math)
Posted on 2016-07-12 (3 Comments)
Solution Factoring Solution by Brian Smith (2016-07-12 10:59:44)
Difficulty: 3 of 5Under Sum Reals, Get Integer (in Just Math)
Posted on 2016-07-09 (3 Comments)
Solution Solution by Brian Smith (2016-07-09 11:27:56)
Difficulty: 3 of 5Under Not too high, not too low (in Just Math)
Posted on 2016-07-06 (3 Comments)
Some Thoughts Quick Thought by Brian Smith (2016-07-06 12:17:06)
Difficulty: 2 of 5Under Fibonacci yields Pythagoras (in Sequences)
Posted on 2016-07-05 (1 Comments)
Solution Solution by Brian Smith (2016-07-05 12:58:14)
Difficulty: 3 of 5Under S.O.D = cube root (in Numbers)
Posted on 2016-07-04 (3 Comments)
Some Thoughts OEIS by Brian Smith (2016-07-04 22:20:38)
Difficulty: 3 of 5Under Lattice Vertices Verification (in Shapes)
Posted on 2016-07-02 (4 Comments)
Solution re(2): Solution by Brian Smith (2016-07-03 09:47:42)
Solution Solution by Brian Smith (2016-07-02 12:01:29)
Difficulty: 3 of 5Under Line Length from Two Triangles (in Shapes)
Posted on 2016-07-01 (4 Comments)
re: Unresolved by Brian Smith (2016-07-04 12:32:51)
Difficulty: 3 of 5Under Angle Ratio Ascertainment 4 (in Shapes)
Posted on 2016-06-26 (1 Comments)
Thoughts by Brian Smith (2016-06-27 09:23:48)
Difficulty: 3 of 5Under Covering a Square (in Shapes)
Posted on 2016-06-24 (2 Comments)
Some Thoughts One arrangment by Brian Smith (2016-06-24 11:03:33)
Difficulty: 3 of 5Under Three Integer Root Sum (in Just Math)
Posted on 2016-06-22 (2 Comments)
Solution Solution by Brian Smith (2016-06-22 10:17:01)
Difficulty: 3 of 5Under Go for the midpoint (in Geometry)
Posted on 2016-06-18 (3 Comments)
Solution from another problem by Brian Smith (2016-06-18 10:16:27)
Difficulty: 3 of 5Under Real Variable Validation (in Just Math)
Posted on 2016-06-11 (4 Comments)
Solution Solution by Brian Smith (2016-06-11 11:29:27)
Difficulty: 2 of 5Under Grid exercise (in Just Math)
Posted on 2016-05-18 (2 Comments)
Solution Solution by Brian Smith (2016-05-18 11:58:48)
Difficulty: 3 of 5Under Binomial Baffle 2 (in Just Math)
Posted on 2016-05-15 (2 Comments)
Solution Solution by Brian Smith (2016-05-15 11:20:47)
Difficulty: 2 of 5Under Easy Victory (in Numbers)
Posted on 2016-05-13 (1 Comments)
Solution Working Backwards by Brian Smith (2016-05-14 14:21:45)
Difficulty: 2 of 5Under You'll be surprised (in Numbers)
Posted on 2016-05-03 (5 Comments)
Solution Solution by Brian Smith (2016-05-03 09:43:15)
Difficulty: 3 of 5Under Quadratic and Perfect Square Query (in Just Math)
Posted on 2016-04-30 (2 Comments)
Solution Solution by Brian Smith (2016-07-22 23:53:36)
Difficulty: 3 of 5Under The heavy couple (in Weights and Scales)
Posted on 2016-04-22 (5 Comments)
Hints/Tips My method by Brian Smith (2016-04-23 10:24:46)
Difficulty: 3 of 5Under An educated guess (in Probability)
Posted on 2016-04-18 (7 Comments)
Some Thoughts Referencing another problem by Brian Smith (2016-04-18 10:02:16)
Difficulty: 3 of 5Under Complex Ratio and Number Resolution (in Sequences)
Posted on 2016-04-13 (2 Comments)
Some Thoughts re: computer assisted solution by Brian Smith (2016-04-13 23:15:18)
Difficulty: 3 of 5Under 1 to 9 concatenation (in Numbers)
Posted on 2016-04-12 (7 Comments)
Solution Analytic Answer by Brian Smith (2016-04-12 12:15:00)
Difficulty: 3 of 5Under The only odd untouchable (in Numbers)
Posted on 2016-04-12 (1 Comments)
Solution Goldbach Solution by Brian Smith (2016-04-12 12:37:55)
Difficulty: 3 of 5Under Real Root Product (in Just Math)
Posted on 2016-04-09 (1 Comments)
Solution Solution by Brian Smith (2016-04-09 11:25:23)
Difficulty: 2 of 5Under Circle Line Length (in Shapes)
Posted on 2016-04-07 (2 Comments)
Solution Solution by Brian Smith (2016-04-08 11:24:15)
Difficulty: 2 of 5Under Tenacious Divisibility Treat (in Just Math)
Posted on 2016-04-06 (9 Comments)
Solution Help from a negative (solution) by Brian Smith (2016-04-06 10:30:14)
Difficulty: 3 of 5Under Nonconstant Product (in Just Math)
Posted on 2016-04-02 (3 Comments)
Solution Solution by Brian Smith (2016-04-03 09:31:26)
Difficulty: 3 of 5Under Harmonic Harmony 2 (in Sequences)
Posted on 2016-03-31 (2 Comments)
A failed attempt by Brian Smith (2017-04-17 00:18:13)
Difficulty: 3 of 5Under What's our problem? (in Numbers)
Posted on 2016-03-30 (1 Comments)
Solution Solving Backwards by Brian Smith (2016-03-30 13:15:32)
Difficulty: 3 of 5Under Star-shaped polyominos (in Shapes)
Posted on 2016-03-28 (7 Comments)
Solution Part E by Brian Smith (2016-03-29 10:43:39)
Some Thoughts Parts A through D by Brian Smith (2016-03-28 23:18:44)
Difficulty: 2 of 5Under 1+4=5 (in Just Math)
Posted on 2016-03-28 (2 Comments)
Solution No Subject by Brian Smith (2016-03-28 13:00:37)
Difficulty: 3 of 5Under Quadratic and Quintic Query (in Just Math)
Posted on 2016-03-26 (2 Comments)
Some Thoughts A start by Brian Smith (2016-03-26 09:41:44)
Difficulty: 3 of 5Under Sum from Arithmetic and Geometric (in Sequences)
Posted on 2016-03-24 (5 Comments)
re: Possible Solution by Brian Smith (2016-03-24 13:52:42)
Difficulty: 3 of 5Under Minimizing n (in Numbers)
Posted on 2016-03-23 (2 Comments)
A start by Brian Smith (2016-03-23 12:05:24)
Difficulty: 3 of 5Under Nonnegative Integer Decision Poser (in Just Math)
Posted on 2016-03-22 (1 Comments)
Solution Solution by Brian Smith (2016-03-22 13:54:30)
Difficulty: 2 of 5Under Neighbors or not? (in Probability)
Posted on 2016-03-22 (3 Comments)
Solution Solution by Brian Smith (2016-03-22 13:25:51)
Difficulty: 3 of 5Under Insert Zero (in Numbers)
Posted on 2016-03-21 (5 Comments)
Solution Solution by Brian Smith (2016-03-21 12:25:37)
Difficulty: 3 of 5Under Rational Value Validation (in Just Math)
Posted on 2016-03-20 (11 Comments)
re(2): cardinality of solution set by Brian Smith (2016-03-21 11:38:39)
Difficulty: 3 of 5Under Matrix Product Poser (in Just Math)
Posted on 2016-03-19 (3 Comments)
Family of Solutions by Brian Smith (2016-03-21 23:16:52)
Solution Orthogonal Diagonalization by Brian Smith (2016-03-19 14:58:46)
Solution Diagonalization Solution by Brian Smith (2016-03-19 10:57:04)
Difficulty: 4 of 5Under Not so trivial (in Numbers)
Posted on 2016-03-18 (6 Comments)
re(2): Parity Solution @Brian by Brian Smith (2016-03-24 11:44:30)
Solution Parity Solution by Brian Smith (2016-03-18 23:47:02)
Difficulty: 3 of 5Under Never 0 mod 3 (in Probability)
Posted on 2016-03-17 (7 Comments)
re(5): Solution by Brian Smith (2016-03-17 23:31:12)
Solution Solution by Brian Smith (2016-03-17 14:05:35)
Difficulty: 2 of 5Under Find number and base (in Numbers)
Posted on 2016-03-17 (6 Comments)
Some Thoughts Off the cuff solution by Brian Smith (2016-03-17 10:42:48)
Difficulty: 3 of 5Under Minimal cardinality (in Numbers)
Posted on 2016-03-16 (3 Comments)
Solution Solution by Brian Smith (2016-03-16 10:34:44)
Difficulty: 3 of 5Under Same area (in Shapes)
Posted on 2016-03-15 (2 Comments)
Solution Solution by Brian Smith (2016-03-16 12:17:27)
Difficulty: 3 of 5Under Countable sets (in Just Math)
Posted on 2016-03-15 (8 Comments)
re(3): Interesting by Brian Smith (2016-03-16 12:04:02)
re: Interesting by Brian Smith (2016-03-16 10:17:19)
Some Thoughts Sets of all Rationals (Parts 2 and 3) by Brian Smith (2016-03-15 12:10:44)
Some Thoughts Set of all Integers (Part 1 Solution) by Brian Smith (2016-03-15 10:45:23)
Difficulty: 3 of 5Under Hexagon in Complex Plane (in Shapes)
Posted on 2016-03-13 (1 Comments)
Solution Solution by Brian Smith (2016-03-13 14:31:42)
Difficulty: 3 of 5Under Tetrahedron Volume Travail (in Shapes)
Posted on 2016-03-12 (1 Comments)
Solution Solution by Brian Smith (2016-03-12 12:44:21)
Difficulty: 3 of 5Under More bouncing (in Geometry)
Posted on 2016-03-09 (3 Comments)
re: proposed solution by Brian Smith (2016-03-10 00:00:24)
Difficulty: 3 of 5Under Rectangles and U Pentominos (in Shapes)
Posted on 2016-03-08 (4 Comments)
re(2): posible solution 2 by Brian Smith (2016-03-10 00:07:34)
Difficulty: 3 of 5Under Grape Consumption Conclusion (in Just Math)
Posted on 2016-03-08 (4 Comments)
Solution Solution with no ties by Brian Smith (2016-03-08 10:32:34)
re: I could win this contest (spoiler) by Brian Smith (2016-03-08 09:48:05)
Difficulty: 3 of 5Under 8th Term from Term Product (in Sequences)
Posted on 2016-03-07 (4 Comments)
Solution Solution by Brian Smith (2016-03-07 12:33:12)
Difficulty: 1 of 5Under d1 or more ? (in Numbers)
Posted on 2016-03-07 (4 Comments)
Solution My Analysis by Brian Smith (2016-03-07 10:20:44)
Difficulty: 3 of 5Under Sum Root Value (in Just Math)
Posted on 2016-03-05 (2 Comments)
Solution Solution by Brian Smith (2016-03-05 10:14:28)
Difficulty: 3 of 5Under Sum 2001 Terms (in Sequences)
Posted on 2016-02-27 (1 Comments)
Solution Solution by Brian Smith (2016-02-27 11:18:03)
Difficulty: 3 of 5Under Three Ways to Put a Square in a Triangle (in Shapes)
Posted on 2016-02-26 (8 Comments)
re: A guess and a question by Brian Smith (2016-02-26 13:47:52)
Difficulty: 3 of 5Under My four numbers (in Just Math)
Posted on 2016-02-24 (12 Comments)
re(4): Solution with Analysis by Brian Smith (2016-02-25 13:57:36)
Solution Solution with Analysis by Brian Smith (2016-02-24 23:59:05)
Difficulty: 3 of 5Under Cheese Cut Conclusion (in Shapes)
Posted on 2016-02-23 (2 Comments)
Solution A couple of different ways by Brian Smith (2016-02-23 12:12:50)
Difficulty: 1 of 5Under Trapezoid Length Trial (in Shapes)
Posted on 2016-02-21 (1 Comments)
Solution Solution by Brian Smith (2016-02-21 14:09:24)
Difficulty: 3 of 5Under Perimeter from Double-cones (in Shapes)
Posted on 2016-02-20 (3 Comments)
re: Solution by Brian Smith (2016-02-23 12:53:07)
Difficulty: 3 of 5Under Fifty-fifty? (in Probability)
Posted on 2016-02-18 (2 Comments)
Solution Solution by Brian Smith (2016-02-18 11:41:46)
Difficulty: 2 of 5Under 25 * 1 (in Just Math)
Posted on 2016-02-18 (3 Comments)
re: solution - what about these? by Brian Smith (2016-02-18 11:30:30)
Difficulty: 2 of 5Under 2017 Term Trial (in Just Math)
Posted on 2016-02-17 (1 Comments)
Solution Solution by Brian Smith (2016-02-17 11:08:24)
Difficulty: 3 of 5Under 1-2-3 Remainder Resolution (in Logic)
Posted on 2016-02-16 (12 Comments)
re: my way - final answers by Brian Smith (2016-02-16 12:51:18)
Difficulty: 3 of 5Under Big difference (in Numbers)
Posted on 2016-02-14 (4 Comments)
re(2): computer solutions by Brian Smith (2016-02-14 17:54:31)
Difficulty: 3 of 5Under Integer Illation From Divisibility (in Just Math)
Posted on 2016-02-13 (1 Comments)
Solution Solution by Brian Smith (2016-02-13 12:56:33)
Difficulty: 2 of 5Under Interesting representation (in Numbers)
Posted on 2016-02-08 (6 Comments)
Solution Solution by Brian Smith (2016-02-28 19:15:30)
Difficulty: 2 of 5Under Fifty-fifty (in Just Math)
Posted on 2016-02-05 (2 Comments)
Solution Solution by Brian Smith (2016-02-05 09:53:41)
Difficulty: 3 of 5Under Mille and Remainder Resolution (in Sequences)
Posted on 2016-02-01 (3 Comments)
Some Thoughts re: spoiler solution; can it clue toward the intended method? by Brian Smith (2016-02-02 10:45:39)
Difficulty: 4 of 5Under The real McCoy (in Weights and Scales)
Posted on 2016-01-29 (1 Comments)
Solution Solution by Brian Smith (2016-01-30 09:37:21)
Difficulty: 3 of 5Under Integer Illation From Divisors (in Just Math)
Posted on 2016-01-27 (2 Comments)
Solution Solution by Brian Smith (2016-01-27 10:02:01)
Difficulty: 3 of 5Under Three Jar Trial (in Weights and Scales)
Posted on 2016-01-25 (4 Comments)
re: Determing n by Brian Smith (2016-01-25 23:23:51)
Solution Solution by Brian Smith (2016-01-25 12:00:55)
Difficulty: 4 of 5Under Pumpkins 6 (in Numbers)
Posted on 2016-01-22 (11 Comments)
re(7): Analytical solution (Bonus puzzle question) by Brian Smith (2016-02-03 11:11:43)
re(4): Analytical solution (Bonus puzzle question) by Brian Smith (2016-01-28 10:43:00)
re: Analytical solution (Bonus puzzle question) by Brian Smith (2016-01-26 00:31:52)
re: Analytical solution by Brian Smith (2016-01-23 11:06:42)
Difficulty: 3 of 5Under Hypotenuse from Cone (in Shapes)
Posted on 2016-01-22 (2 Comments)
Solution Solution by Brian Smith (2016-01-22 09:51:40)
Difficulty: 3 of 5Under Three Power Verification (in Just Math)
Posted on 2016-01-20 (4 Comments)
Proved in 1978 by Brian Smith (2016-01-21 11:01:09)
Difficulty: 3 of 5Under 9 coins prob (in Weights and Scales)
Posted on 2016-01-18 (6 Comments)
re(2): Two preplanned weighings by Brian Smith (2016-01-19 10:04:00)
Solution Two preplanned weighings by Brian Smith (2016-01-18 23:22:11)
Difficulty: 3 of 5Under Composite Integer Conclusion (in Just Math)
Posted on 2016-01-18 (2 Comments)
Solution Solution by Brian Smith (2016-01-18 11:53:55)
Difficulty: 4 of 5Under Product equals sum (in Just Math)
Posted on 2016-01-17 (6 Comments)
Solution re: A continuation by Brian Smith (2016-01-18 10:47:17)
Difficulty: 3 of 5Under Infinite Illation Decision 2 (in Just Math)
Posted on 2016-01-15 (1 Comments)
Some Thoughts Preliminary search and the OEIS sequence by Brian Smith (2016-01-15 13:01:56)
Difficulty: 3 of 5Under Maximum Value Muse (in Just Math)
Posted on 2016-01-14 (10 Comments)
re: A better try by Brian Smith (2016-03-02 00:14:27)
Some Thoughts Square Thoughts by Brian Smith (2016-01-15 09:46:53)
Difficulty: 3 of 5Under 6 coins (in Weights and Scales)
Posted on 2016-01-13 (10 Comments)
Solution Solution by Brian Smith (2016-01-13 11:26:07)
Difficulty: 4 of 5Under Primevens and primeodds (in Numbers)
Posted on 2016-01-10 (8 Comments)
Some Thoughts OEIS sequences by Brian Smith (2016-01-12 11:23:22)
Difficulty: 3 of 5Under Tan Settlement (in Shapes)
Posted on 2016-01-09 (3 Comments)
Brocard Angle by Brian Smith (2016-01-11 13:51:42)
Solution A lot of Sine work (Solution) by Brian Smith (2016-01-11 12:58:15)
Difficulty: 3 of 5Under Two hexagons (in Just Math)
Posted on 2016-01-07 (3 Comments)
Solution Simple Solution by Brian Smith (2016-06-25 23:50:38)
Difficulty: 4 of 5Under Restricted Rook Runaround (in Games)
Posted on 2016-01-05 (7 Comments)
re: Open question by Brian Smith (2016-01-11 10:36:20)
Difficulty: 3 of 5Under Twenty deposits (in Just Math)
Posted on 2016-01-04 (4 Comments)
Solution Solution by Brian Smith (2016-01-05 12:18:08)
Difficulty: 3 of 5Under Area from Square Areas (in Shapes)
Posted on 2016-01-02 (1 Comments)
Solution Solution by Brian Smith (2016-01-02 10:24:34)
Difficulty: 3 of 5Under One of Sixteen (in Weights and Scales)
Posted on 2015-12-29 (12 Comments)
re: What's the problem? (and a spoiler) by Brian Smith (2015-12-31 13:06:07)
Difficulty: 3 of 5Under Expression and Perfect Square 2 (in Just Math)
Posted on 2015-12-25 (3 Comments)
Some Thoughts re: Two small solutions and a conjecture by Brian Smith (2015-12-26 13:50:47)
Some Thoughts Two small solutions and a conjecture by Brian Smith (2015-12-25 11:42:52)
Difficulty: 4 of 5Under Protecting the fleet Part E. (in Calculus)
Posted on 2015-12-23 (3 Comments)
Solution Solution by Brian Smith (2015-12-24 10:27:35)
Difficulty: 3 of 5Under Quintic Power Query (in Just Math)
Posted on 2015-12-21 (2 Comments)
Some Thoughts A little research by Brian Smith (2015-12-21 11:49:11)
Difficulty: 3 of 5Under Quadratic and Five Variable Query (in Just Math)
Posted on 2015-12-20 (2 Comments)
Some Thoughts Thoughts by Brian Smith (2016-07-10 19:52:38)
Difficulty: 3 of 5Under Real Equation Resolution (in Just Math)
Posted on 2015-12-17 (1 Comments)
Solution Solution by Brian Smith (2015-12-17 23:39:15)
Difficulty: 3 of 5Under Protecting the fleet Parts C. & D. (in Geometry)
Posted on 2015-12-15 (2 Comments)
Solution Solutions by Brian Smith (2015-12-16 12:42:08)
Difficulty: 2 of 5Under Protecting the fleet Parts A. & B. (in Geometry)
Posted on 2015-12-14 (4 Comments)
Solution Solutions by Brian Smith (2015-12-16 11:35:55)
Difficulty: 3 of 5Under Complex Equation Conclusion (in Just Math)
Posted on 2015-12-12 (3 Comments)
Solution Solution by Brian Smith (2015-12-12 21:26:43)
Difficulty: 3 of 5Under Simultaneous Real Satisfaction (in Just Math)
Posted on 2015-11-28 (1 Comments)
Solution Solution by Brian Smith (2016-12-18 18:04:56)
Difficulty: 2 of 5Under Sum of powers (in Numbers)
Posted on 2015-11-18 (3 Comments)
Solution A little more direct.... by Brian Smith (2016-07-13 09:57:02)
Difficulty: 3 of 5Under Irrational Decision (in Just Math)
Posted on 2015-11-15 (6 Comments)
Solution Solution by Brian Smith (2016-07-09 22:55:15)
Difficulty: 3 of 5Under Expression Ratio Limit (in Calculus)
Posted on 2015-10-22 (1 Comments)
Stumped by Brian Smith (2017-06-24 12:11:00)
Difficulty: 3 of 5Under Sum Expression Value Determination (in Just Math)
Posted on 2015-10-18 (3 Comments)
Solution The easy way? (Solution) by Brian Smith (2015-10-18 13:12:59)
Difficulty: 3 of 5Under Expression Divides Expression (in Just Math)
Posted on 2015-09-12 (1 Comments)
Solution Solution by Brian Smith (2017-06-24 11:45:22)
Difficulty: 3 of 5Under Talk to me (in Just Math)
Posted on 2015-09-10 (1 Comments)
Solution Solution by Brian Smith (2017-06-30 22:14:53)
Difficulty: 3 of 5Under Non-perfect Cube Root Sum (in Just Math)
Posted on 2015-08-14 (6 Comments)
Some searching by Brian Smith (2015-08-17 12:30:54)
Difficulty: 3 of 5Under You make me laugh (in Numbers)
Posted on 2015-07-28 (2 Comments)
Solution Analytic Solution by Brian Smith (2016-11-24 11:38:30)
Difficulty: 3 of 5Under A powerful resemblance. (in Just Math)
Posted on 2015-07-12 (2 Comments)
Stumped by Brian Smith (2017-01-01 18:27:04)
Difficulty: 2 of 5Under Map coloring (in Shapes)
Posted on 2015-06-05 (8 Comments)
Solution 6 countries solution by Brian Smith (2015-06-05 22:50:02)
Difficulty: 3 of 5Under All that glitters (in Numbers)
Posted on 2015-05-31 (1 Comments)
Solution Solution by Brian Smith (2017-06-23 21:09:41)
Difficulty: 3 of 5Under Tile flipping (in Just Math)
Posted on 2015-04-08 (12 Comments)
Some Thoughts No Subject by Brian Smith (2016-11-15 10:49:44)
Difficulty: 3 of 5Under Quadratic Query (in Just Math)
Posted on 2015-04-08 (1 Comments)
Thoughts by Brian Smith (2016-11-16 12:51:14)
Difficulty: 2 of 5Under Missing Digit II (in Just Math)
Posted on 2015-03-10 (1 Comments)
Solution Solution by Brian Smith (2016-06-26 11:33:57)
Difficulty: 3 of 5Under Double a triangle (in Sequences)
Posted on 2015-02-19 (3 Comments)
Some Thoughts One more observation by Brian Smith (2016-07-30 11:24:32)
Difficulty: 3 of 5Under Octic Sum Settlement (in Just Math)
Posted on 2015-02-06 (3 Comments)
Solution Solution by Brian Smith (2017-06-24 09:27:16)
Difficulty: 3 of 5Under Integral Proof (in Numbers)
Posted on 2015-01-26 (3 Comments)
Solution Full Solution by Brian Smith (2016-06-26 23:33:36)
Difficulty: 3 of 5Under Final Minus Two (in Just Math)
Posted on 2015-01-24 (2 Comments)
Solution How to add -2 by Brian Smith (2016-07-01 09:38:28)
Difficulty: 3 of 5Under Match 3 Game (in General)
Posted on 2015-01-02 (2 Comments)
Solution All 100 Cleared by Brian Smith (2016-02-09 13:58:16)
Some Thoughts 95 of 100 cleared by Brian Smith (2016-02-08 11:42:41)
Difficulty: 3 of 5Under Region Area Ascertainment (in Just Math)
Posted on 2014-12-28 (4 Comments)
Solution Another Solution by Brian Smith (2016-12-05 12:01:28)
Difficulty: 3 of 5Under Marked squares (in Just Math)
Posted on 2014-12-24 (1 Comments)
Solution Solution by Brian Smith (2016-02-26 12:30:01)
Difficulty: 2 of 5Under Equation Exercise (in Just Math)
Posted on 2014-12-16 (3 Comments)
Solution Another solution by Brian Smith (2016-11-24 16:02:23)
Difficulty: 3 of 5Under Extreme Ellipse Exercise (in Shapes)
Posted on 2014-12-13 (1 Comments)
Solution Circumellipse (Part A) by Brian Smith (2016-12-04 23:42:52)
Difficulty: 3 of 5Under Cuboid Volume Validation (in Shapes)
Posted on 2014-11-30 (1 Comments)
Solution Solution by Brian Smith (2016-02-07 23:03:32)
Difficulty: 3 of 5Under A happy trio (in Probability)
Posted on 2014-10-09 (3 Comments)
Solution No Subject by Brian Smith (2016-06-25 21:32:22)
Difficulty: 3 of 5Under 1 to 8 in 5*5 grid (in Word Problems)
Posted on 2014-09-16 (1 Comments)
Solution Solution by Brian Smith (2016-11-14 11:01:27)
Difficulty: 3 of 5Under 4 cents (in Shapes)
Posted on 2014-09-12 (11 Comments)
re: Close, but no cigar by Brian Smith (2016-02-01 11:33:59)
Some Thoughts re: About this problem. by Brian Smith (2016-01-31 14:59:56)
Solution A possible connected maximum by Brian Smith (2016-01-31 10:34:03)
re: Question by Brian Smith (2016-01-31 09:29:51)
Some Thoughts re: Overlooked problem by Brian Smith (2016-01-30 23:16:21)
Difficulty: 3 of 5Under Sparse Sine Settlement (in Just Math)
Posted on 2014-09-03 (2 Comments)
Some Thoughts An identity to prove by Brian Smith (2017-06-24 12:44:20)
Difficulty: 3 of 5Under A PowerSum Puzzle (in Numbers)
Posted on 2014-08-27 (3 Comments)
Solution Solution by Brian Smith (2016-06-21 12:12:11)
Difficulty: 3 of 5Under Six tangents (in Just Math)
Posted on 2014-08-17 (8 Comments)
Solution Solution by Brian Smith (2016-07-04 19:45:10)
Difficulty: 3 of 5Under Line Division (in Shapes)
Posted on 2014-08-10 (1 Comments)
Solution Fold sequence by Brian Smith (2016-12-18 15:27:30)
Difficulty: 3 of 5Under Identity Satisfaction (in Just Math)
Posted on 2014-08-05 (1 Comments)
Solution Some Linear Algebra by Brian Smith (2016-02-03 11:57:22)
Difficulty: 3 of 5Under Square Squares Settlement (in Shapes)
Posted on 2014-07-30 (2 Comments)
Solution Solution by Brian Smith (2016-06-17 13:34:34)
Difficulty: 3 of 5Under Covering an Ellipse (in Shapes)
Posted on 2014-07-26 (2 Comments)
Solution Parallel Rectangles by Brian Smith (2016-12-16 16:01:39)
Some Thoughts One big rectangle by Brian Smith (2016-12-13 12:51:48)
Difficulty: 4 of 5Under Tiling Trial (in Shapes)
Posted on 2014-07-24 (2 Comments)
Solution re: Solution by Brian Smith (2016-10-26 10:50:03)
Difficulty: 3 of 5Under Taking the Fifth (in Just Math)
Posted on 2014-06-21 (5 Comments)
re(2): Solution by Brian Smith (2017-05-05 23:54:15)
Solution Solution by Brian Smith (2017-05-01 23:55:28)
Difficulty: 3 of 5Under Bricks and Box Baffle (in Shapes)
Posted on 2014-05-23 (2 Comments)
Hints/Tips Old thoughts by Brian Smith (2014-05-24 14:08:20)
Difficulty: 3 of 5Under Guessing Game (in Numbers)
Posted on 2014-05-16 (18 Comments)
re: Additional thoughts by Brian Smith (2014-05-19 07:34:34)
Difficulty: 2 of 5Under Trivia (in Numbers)
Posted on 2014-04-21 (7 Comments)
Solution Answer by Brian Smith (2014-04-21 10:31:25)
Difficulty: 3 of 5Under Intriguing Integral Illation II (in Calculus)
Posted on 2014-04-03 (2 Comments)
Some Thoughts A little more direct.... by Brian Smith (2016-07-04 23:01:03)
Difficulty: 3 of 5Under Pumpkins 4 (in Weights and Scales)
Posted on 2014-01-31 (3 Comments)
Solution Solution, with no guesswork! by Brian Smith (2015-12-24 11:48:41)
Difficulty: 4 of 5Under Coded Crossword 2 (in Cryptography)
Posted on 2014-01-24 (2 Comments)
Solution Solution by Brian Smith (2017-07-24 21:21:18)
Difficulty: 3 of 5Under Pumpkins 3 (in Weights and Scales)
Posted on 2014-01-22 (6 Comments)
re(2): Another Analytic Solution by Brian Smith (2016-01-26 11:11:29)
Solution Another Analytic Solution by Brian Smith (2016-01-26 00:21:27)
re: computer solution - a bug somewhere by Brian Smith (2016-01-26 00:05:00)
Difficulty: 3 of 5Under Rationally Integers II (in Just Math)
Posted on 2013-12-21 (3 Comments)
Solution Solution by Brian Smith (2017-06-30 21:47:57)
Difficulty: 3 of 5Under Algorithm requested (in Algorithms)
Posted on 2013-12-18 (3 Comments)
Some Thoughts Another Algorithm by Brian Smith (2016-06-21 11:18:10)
Difficulty: 3 of 5Under One out of ninety (in Weights and Scales)
Posted on 2013-12-17 (7 Comments)
Solution One out of One Hundred Twenty! by Brian Smith (2015-12-18 00:03:15)
Difficulty: 3 of 5Under Take the right one (in Weights and Scales)
Posted on 2013-10-18 (18 Comments)
Solution Finding 13 Genuine Coins by Brian Smith (2013-10-20 19:12:35)
Difficulty: 3 of 5Under No multiplication allowed (in Numbers)
Posted on 2013-10-17 (8 Comments)
Some Thoughts 3/4 of the way (In two ways) by Brian Smith (2013-10-22 11:33:05)
Difficulty: 3 of 5Under Reciprocal Equation #5 (in Just Math)
Posted on 2013-10-15 (3 Comments)
Solution Rest of a solution by Brian Smith (2016-07-04 09:45:19)
Some Thoughts Part of a solution by Brian Smith (2016-07-03 21:01:30)
Difficulty: 1 of 5Under Three Semi-Circles (in Geometry)
Posted on 2013-09-22 (1 Comments)
Some Thoughts Maybe a solution by Brian Smith (2016-12-18 14:18:37)
Difficulty: 3 of 5Under Supreme Value Validation (in Just Math)
Posted on 2013-09-08 (3 Comments)
Solution Another approach by Brian Smith (2017-01-01 18:52:39)
Difficulty: 3 of 5Under Eight Calculations (in Logic)
Posted on 2013-08-29 (1 Comments)
Solution Solution, assuming error in text by Brian Smith (2017-06-24 09:07:13)
Difficulty: 3 of 5Under Decimal Digit Determination (in Just Math)
Posted on 2013-08-24 (5 Comments)
Solution Solution from another problem by Brian Smith (2016-06-14 10:27:19)
Difficulty: 4 of 5Under Pocket Change (in Just Math)
Posted on 2013-07-30 (5 Comments)
Solution Solution by Brian Smith (2013-07-30 14:43:39)
Difficulty: 3 of 5Under Faulty Card Shuffler (in General)
Posted on 2013-07-24 (10 Comments)
Some Thoughts Solution by Brian Smith (2013-07-24 16:28:59)
Difficulty: 3 of 5Under Dominoes and checkerboard (in General)
Posted on 2013-07-23 (3 Comments)
Solution Solution by Brian Smith (2013-07-24 14:27:38)
Difficulty: 3 of 5Under Penny Parity (in General)
Posted on 2013-07-18 (4 Comments)
Hints/Tips An algorithm by Brian Smith (2017-07-24 20:46:19)
Difficulty: 4 of 5Under Hidden Number Guess (in General)
Posted on 2013-07-10 (4 Comments)
Solution Functional Solution by Brian Smith (2016-06-25 20:45:00)
Difficulty: 3 of 5Under Divisibility of N (in Numbers)
Posted on 2013-06-15 (4 Comments)
Some Thoughts Parts 3 and 4 by Brian Smith (2017-06-26 23:40:11)
Difficulty: 3 of 5Under Two ladders (in Geometry)
Posted on 2013-03-12 (1 Comments)
Some Thoughts Thoughts by Brian Smith (2017-01-01 00:32:22)
Difficulty: 3 of 5Under Reasonable Root ? (in Just Math)
Posted on 2013-02-17 (2 Comments)
Solution Solution by Brian Smith (2016-07-14 13:45:22)
Difficulty: 3 of 5Under Five Fives Fancy Formula (in Just Math)
Posted on 2012-12-17 (4 Comments)
re(2): another form of the answer - nope by Brian Smith (2012-12-22 15:00:02)
Difficulty: 3 of 5Under Getting closer (in Just Math)
Posted on 2012-11-25 (6 Comments)
Some Thoughts In the OEIS by Brian Smith (2012-11-26 13:12:03)
Difficulty: 4 of 5Under P/Q (in Just Math)
Posted on 2012-10-12 (5 Comments)
Solution re: analytical proof .... a hint .... the proof by Brian Smith (2016-11-25 22:44:30)
Difficulty: 3 of 5Under Irrational to Rational (in Just Math)
Posted on 2012-06-09 (2 Comments)
Some Thoughts Algebraic Thoughts by Brian Smith (2016-07-04 22:06:23)
Difficulty: 3 of 5Under Nine Androids Crossing a Bridge (in Logic)
Posted on 2012-05-14 (1 Comments)
Solution No Composite Sums Solution by Brian Smith (2016-07-22 22:04:12)
Difficulty: 3 of 5Under Sorting Coins II (in Weights and Scales)
Posted on 2012-03-28 (4 Comments)
Solution Full Solution by Brian Smith (2016-06-05 00:11:37)
Difficulty: 4 of 5Under I can see the origin from here. (in Calculus)
Posted on 2012-03-11 (2 Comments)
Some Thoughts Parts 1-3 by Brian Smith (2012-03-13 20:18:30)
Difficulty: 4 of 5Under Which is Which II (in Weights and Scales)
Posted on 2012-02-15 (4 Comments)
Some Thoughts Thoughts by Brian Smith (2016-07-09 23:13:47)
Difficulty: 3 of 5Under Simultaneous Settlement (in Just Math)
Posted on 2012-01-27 (8 Comments)
Solution Another solution by Brian Smith (2012-01-28 14:21:27)
Difficulty: 2 of 5Under Polygons in a Cube (in Just Math)
Posted on 2011-12-11 (1 Comments)
Solution Solution by Brian Smith (2016-07-17 10:43:30)
Difficulty: 3 of 5Under Power Division II (in Just Math)
Posted on 2011-11-05 (2 Comments)
Solution Analytic Solution by Brian Smith (2017-02-28 09:18:00)
Difficulty: 3 of 5Under Lucky seven V (in Just Math)
Posted on 2011-09-13 (3 Comments)
Solution Solution by Brian Smith (2016-12-23 15:53:10)
Difficulty: 2 of 5Under Five out of one (in Geometry)
Posted on 2011-09-06 (3 Comments)
Some Thoughts An Obtuse Answer by Brian Smith (2011-09-06 14:30:24)
Difficulty: 3 of 5Under Sum number equals integer (in Numbers)
Posted on 2011-06-11 (5 Comments)
Solution re: Parametric solutions - Improved by Brian Smith (2016-12-21 12:18:56)
Solution Parametric solutions by Brian Smith (2016-12-19 13:59:26)
Some Thoughts First solution by Brian Smith (2016-12-19 12:01:47)
Difficulty: 3 of 5Under Duplicate Digit Determination IV (in Just Math)
Posted on 2011-06-05 (1 Comments)
Solution Solution by Brian Smith (2017-07-02 14:14:56)
Difficulty: 3 of 5Under Near Pandigital Divisibility (in Probability)
Posted on 2011-06-03 (1 Comments)
Some Thoughts Thoughts by Brian Smith (2017-07-02 13:19:51)
Difficulty: 1 of 5Under Not a fraction (in Just Math)
Posted on 2011-04-11 (3 Comments)
Solution Thinking quickly by Brian Smith (2016-06-29 13:42:30)
Difficulty: 3 of 5Under Rational Rigor (in Just Math)
Posted on 2011-03-22 (4 Comments)
Solution Solution by Brian Smith (2016-07-17 12:17:34)
Difficulty: 3 of 5Under Integer points on circles. (in Geometry)
Posted on 2011-02-28 (14 Comments)
Hints/Tips OEIS sequence by Brian Smith (2011-03-01 11:26:35)
Some Thoughts N=5 by Brian Smith (2011-02-28 21:32:14)
Difficulty: 3 of 5Under Sevenths Sliced Square (in Geometry)
Posted on 2011-02-24 (7 Comments)
re: n = 4 (spoiler) by Brian Smith (2011-02-25 20:24:47)
Difficulty: 4 of 5Under Upgrade to 13 (in Weights and Scales)
Posted on 2011-02-16 (4 Comments)
Solution Three Solutions for Three Arm Ratios by Brian Smith (2016-07-04 20:43:35)
Difficulty: 3 of 5Under Rook vs Bishop (in Games)
Posted on 2011-01-25 (4 Comments)
Solution Rook Case Solution by Brian Smith (2011-01-26 23:00:45)
Difficulty: 3 of 5Under Numerator Divisibility Nuance (in Just Math)
Posted on 2011-01-22 (4 Comments)
Solution Solution by Brian Smith (2011-01-23 14:55:04)
Difficulty: 4 of 5Under Two ellipses (in Geometry)
Posted on 2011-01-19 (3 Comments)
Mental Sketches by Brian Smith (2016-12-18 14:06:43)
Difficulty: 3 of 5Under Near Goldbach Alphametics II (in Numbers)
Posted on 2011-01-07 (1 Comments)
Solution Number+1 Answer by Brian Smith (2017-04-22 19:52:18)
Difficulty: 3 of 5Under Lucky seven III (in Just Math)
Posted on 2011-01-05 (4 Comments)
Solution Analytic Answer by Brian Smith (2016-07-04 11:56:23)
Difficulty: 3 of 5Under Around the ring (in Shapes)
Posted on 2010-12-20 (9 Comments)
Some Thoughts Part 1 by Brian Smith (2016-02-29 12:58:41)
Difficulty: 3 of 5Under Seven Divisibility Settlement (in Just Math)
Posted on 2010-11-13 (3 Comments)
re: Possible Solution by Brian Smith (2017-06-24 13:44:34)
Difficulty: 3 of 5Under Look for the pairs (in Just Math)
Posted on 2010-10-15 (3 Comments)
See also... by Brian Smith (2010-10-16 00:23:21)
Difficulty: 3 of 5Under Sum and Square Root Sum (in Just Math)
Posted on 2010-09-25 (3 Comments)
Solution No Subject by Brian Smith (2016-02-18 12:26:11)
Difficulty: 3 of 5Under Solid triangles (3) (in Shapes)
Posted on 2010-08-18 (4 Comments)
Some Thoughts re: Parametric Thoughts by Brian Smith (2016-02-21 13:38:41)
Some Thoughts Parametric Thoughts by Brian Smith (2016-02-19 11:09:50)
Difficulty: 4 of 5Under Powerful and consecutive (in Numbers)
Posted on 2010-08-09 (16 Comments)
Question Question by Brian Smith (2010-08-09 12:05:30)
Difficulty: 2 of 5Under Too many fours and sixes (in Numbers)
Posted on 2010-08-07 (4 Comments)
Solution Solution by Brian Smith (2010-08-07 23:13:19)
Difficulty: 4 of 5Under POWER CHAIN. (in Sequences)
Posted on 2010-07-22 (6 Comments)
Some Thoughts Eight is impossible by Brian Smith (2010-07-22 16:37:35)
Difficulty: 3 of 5Under Inscribe Right Triangle (in Geometry)
Posted on 2010-07-18 (1 Comments)
Some Thoughts Thoughts by Brian Smith (2010-07-20 15:39:58)
Difficulty: 3 of 5Under Oddly divisible (in Just Math)
Posted on 2010-07-17 (5 Comments)
Solution re: Proof for n even....for n odd, figure out - Got it! by Brian Smith (2016-06-27 11:55:49)
Difficulty: 3 of 5Under Points On A Circle II (in Geometry)
Posted on 2010-07-13 (12 Comments)
Golomb Rulers by Brian Smith (2010-07-14 12:14:55)
Difficulty: 3 of 5Under Vertex on a Line (in Geometry)
Posted on 2010-07-11 (4 Comments)
Solution Solution by Brian Smith (2010-07-13 12:45:12)
Difficulty: 3 of 5Under x^3 = y^2 15 (in Numbers)
Posted on 2010-07-08 (11 Comments)
Some Thoughts Catalan Conjecture by Brian Smith (2010-07-10 12:24:32)
Difficulty: 3 of 5Under Inscribed circle and Line Choice (in Just Math)
Posted on 2010-06-27 (3 Comments)
Solution No Subject by Brian Smith (2016-02-02 11:17:12)
Difficulty: 4 of 5Under Lucky seven II (in Just Math)
Posted on 2010-06-23 (2 Comments)
Solution Solution by Brian Smith (2016-12-23 00:20:40)
Difficulty: 5 of 5Under Cover the Center (in Geometry)
Posted on 2010-06-04 (6 Comments)
Some Thoughts Five and Six Planks by Brian Smith (2010-06-05 17:38:43)
Some Thoughts Four Plank Analysis by Brian Smith (2010-06-04 19:13:06)
Some Thoughts One, Two and Three Planks by Brian Smith (2010-06-04 17:34:56)
Difficulty: 3 of 5Under Cubic and Consecutive Concern II (in Probability)
Posted on 2010-05-31 (10 Comments)
re: Infinite family of solutions - Solution not in the family by Brian Smith (2010-06-04 19:58:53)
Some Thoughts Infinite family of solutions by Brian Smith (2010-06-01 20:21:58)
Solution Program Solution by Brian Smith (2010-06-01 01:38:21)
Difficulty: 4 of 5Under Cover the Circumference (in Geometry)
Posted on 2010-05-25 (4 Comments)
Some Thoughts Another approach by Brian Smith (2010-05-27 00:27:57)
Difficulty: 2 of 5Under Cross the Circle (in Geometry)
Posted on 2010-05-23 (3 Comments)
Solution Solution by Brian Smith (2010-05-23 18:53:28)
Difficulty: 2 of 5Under Hidden Fruit (in Numbers)
Posted on 2010-05-21 (3 Comments)
re(2): Solution .......What a bright idea- by Brian Smith (2010-05-21 14:56:28)
Solution Solution by Brian Smith (2010-05-21 12:28:48)
Difficulty: 2 of 5Under Many triplets (in Just Math)
Posted on 2010-05-10 (6 Comments)
Solution Parametric Solution by Brian Smith (2010-05-10 13:34:42)
Difficulty: 3 of 5Under My favorite numbers IV (in Just Math)
Posted on 2010-05-08 (3 Comments)
Some Thoughts Three distinct answers by Brian Smith (2010-05-09 11:09:36)
Difficulty: 4 of 5Under Perfect Square To Divisibility By 56 (in Just Math)
Posted on 2010-04-01 (14 Comments)
Hints/Tips Modular arithmetic by Brian Smith (2010-04-02 23:05:04)
Some Thoughts Now, four values by Brian Smith (2010-04-01 20:55:46)
Difficulty: 2 of 5Under Minimal area. (in Geometry)
Posted on 2010-03-29 (11 Comments)
Solution A longer solution by Brian Smith (2010-03-30 20:34:53)
Difficulty: 3 of 5Under 4x11 Grid Fill (in Shapes)
Posted on 2010-03-21 (7 Comments)
Some Thoughts Divisibility by Brian Smith (2010-03-22 23:25:00)
Difficulty: 4 of 5Under Little cubes (in Numbers)
Posted on 2010-02-27 (5 Comments)
Some Thoughts re(2): computer exploration by Brian Smith (2010-02-27 18:51:49)
Difficulty: 4 of 5Under The three sides and the height (in Numbers)
Posted on 2010-02-15 (4 Comments)
Hints/Tips Analytic Answer by Brian Smith (2010-02-15 15:42:36)
Difficulty: 3 of 5Under Enough is enough (in Games)
Posted on 2010-01-29 (4 Comments)
Solution Smallest known number of clues by Brian Smith (2010-01-29 16:31:27)
Difficulty: 4 of 5Under four or more (in Numbers)
Posted on 2010-01-25 (2 Comments)
Solution Solution by Brian Smith (2010-01-25 14:53:21)
Difficulty: 4 of 5Under Quaint Quartic-Quadratic Sum (in Just Math)
Posted on 2010-01-09 (3 Comments)
Solution Solution by Brian Smith (2010-01-09 17:54:44)
Difficulty: 4 of 5Under Absolute Adjacent Cell Difference (in Just Math)
Posted on 2010-01-02 (1 Comments)
Some Thoughts Almost a solution by Brian Smith (2016-07-17 15:11:07)
Difficulty: 3 of 5Under Precariously Balanced (in Weights and Scales)
Posted on 2009-12-22 (10 Comments)
Solution Rather Simple Solution by Brian Smith (2009-12-23 22:59:57)
Difficulty: 3 of 5Under No Addition Allowed (in Numbers)
Posted on 2009-12-14 (6 Comments)
re: triangular numbers by Brian Smith (2009-12-15 14:38:10)
Difficulty: 3 of 5Under Going Arithmetic With Alphametic II (in Just Math)
Posted on 2009-11-21 (3 Comments)
Solution Analytic solution by Brian Smith (2009-11-21 20:32:17)
Difficulty: 3 of 5Under Consecutive 8-Digit Heron (in Geometry)
Posted on 2009-11-15 (4 Comments)
re: One possible value by Brian Smith (2009-11-16 13:04:47)
Difficulty: 2 of 5Under ten*ten ten = ninety (in Numbers)
Posted on 2009-10-25 (5 Comments)
Solution Next larger solution by Brian Smith (2009-10-30 22:59:24)
Difficulty: 2 of 5Under Three Prime Product (in Numbers)
Posted on 2009-10-18 (5 Comments)
Solution Solution by Brian Smith (2009-10-18 14:44:38)
Difficulty: 3 of 5Under x + y * 3√2 + z * 3√4 = 0 (in Just Math)
Posted on 2009-10-15 (14 Comments)
Solution Solution - trying formatting by Brian Smith (2009-10-16 12:04:25)
Difficulty: 3 of 5Under No Monochrome Sums (in Numbers)
Posted on 2009-10-14 (9 Comments)
C program by Brian Smith (2009-10-15 15:30:45)
Some Thoughts Sloane says by Brian Smith (2009-10-14 20:59:44)
Difficulty: 4 of 5Under 9 points to convex pentagon (in Shapes)
Posted on 2009-10-12 (4 Comments)
Hints/Tips Happy Ending by Brian Smith (2009-10-18 00:54:51)
Difficulty: 2 of 5Under Double Coverage (in Shapes)
Posted on 2009-09-29 (4 Comments)
re: considering second pentomino by Brian Smith (2009-09-30 00:45:40)
Difficulty: 3 of 5Under ABCD's Of Greatest Divisor (in Numbers)
Posted on 2009-09-24 (3 Comments)
Solution Solution by Brian Smith (2009-09-24 12:43:50)
Difficulty: 3 of 5Under Primes and Squares (in Just Math)
Posted on 2009-08-16 (3 Comments)
Thoughts by Brian Smith (2016-02-06 13:46:57)
Difficulty: 3 of 5Under Equal Chance (in Probability)
Posted on 2009-08-03 (2 Comments)
Solution Solution by Brian Smith (2017-07-26 21:11:01)
Difficulty: 3 of 5Under 3x3 Nim (in Games)
Posted on 2009-06-25 (26 Comments)
Hints/Tips nim value equivalents by Brian Smith (2009-06-29 01:15:18)
Difficulty: 3 of 5Under Powering Up The Matrix (in Just Math)
Posted on 2009-06-20 (3 Comments)
Solution Solution by Brian Smith (2009-06-21 01:28:32)
Difficulty: 3 of 5Under Triangles and Squares (in Geometry)
Posted on 2009-06-17 (4 Comments)
Solution Solution by Brian Smith (2009-06-19 11:41:03)
Some Thoughts Trapezoids? by Brian Smith (2009-06-17 19:07:06)
Difficulty: 3 of 5Under 5 Cards Magic Trick Redux (in Logic)
Posted on 2009-06-05 (3 Comments)
Solution Functional Solution by Brian Smith (2016-06-25 20:21:18)
Difficulty: 3 of 5Under Curious Cubic Constant (in Numbers)
Posted on 2009-05-02 (3 Comments)
Solution Smallest c for 1,2,3,4,5,6 distinct solutions by Brian Smith (2016-07-03 19:51:22)
Difficulty: 2 of 5Under five, four and tri (in Numbers)
Posted on 2009-04-18 (4 Comments)
Alphametric computer soltuion by Brian Smith (2009-04-18 16:50:57)
Difficulty: 3 of 5Under Derivative chains. (in Calculus)
Posted on 2009-03-29 (6 Comments)
Some Thoughts 4 of 5 solved by Brian Smith (2016-06-25 22:19:38)
Difficulty: 2 of 5Under Now, the Old Hat (in Numbers)
Posted on 2009-02-20 (5 Comments)
Solution Analytic Solution by Brian Smith (2009-02-21 18:49:40)
Difficulty: 4 of 5Under Cylindrical Cuts (in Shapes)
Posted on 2009-01-22 (5 Comments)
Solution Exact Surface Area by Brian Smith (2009-02-12 13:10:23)
Solution Exact Solution by Brian Smith (2009-01-23 16:13:00)
Difficulty: 3 of 5Under Power x mod x (in Just Math)
Posted on 2008-12-18 (5 Comments)
2^n mod n website by Brian Smith (2008-12-19 15:58:17)
Difficulty: 3 of 5Under Defective Bulbs (in Just Math)
Posted on 2008-12-12 (5 Comments)
Q2 Answer by Brian Smith (2008-12-15 16:20:16)
Difficulty: 2 of 5Under Constructing a right triangle (in Geometry)
Posted on 2008-12-07 (6 Comments)
Solution Generalized soltution by Brian Smith (2008-12-08 02:49:52)
Difficulty: 3 of 5Under Getting The Minimum With SOD (in Just Math)
Posted on 2008-12-02 (2 Comments)
Solution Solution by Brian Smith (2008-12-02 15:31:43)
Difficulty: 3 of 5Under Triangle Area (in Geometry)
Posted on 2008-11-28 (11 Comments)
re: computer aided solution by Brian Smith (2008-11-30 03:23:35)
Difficulty: 2 of 5Under one/five = .two (in Numbers)
Posted on 2008-11-24 (3 Comments)
re: a start for an analytical solution by Brian Smith (2008-11-30 03:33:18)
Difficulty: 2 of 5Under Building a ruler (in General)
Posted on 2008-11-14 (10 Comments)
Golomb Rulers by Brian Smith (2008-11-16 00:32:35)
Difficulty: 2 of 5Under Always equilateral (in Geometry)
Posted on 2008-10-14 (5 Comments)
Solution re(2): Napoleon's Theorem - trig proof by Brian Smith (2008-10-21 03:07:30)
Napoleon's Theorem by Brian Smith (2008-10-18 23:07:46)
Difficulty: 2 of 5Under Square 2 Score (in Just Math)
Posted on 2008-05-13 (5 Comments)
re: Two values, no proof - Sloane sequence by Brian Smith (2008-05-14 12:26:42)
Difficulty: 2 of 5Under Do you have a card? (in Riddles)
Posted on 2008-05-12 (12 Comments)
Solution I have one of these (spoiler) by Brian Smith (2008-05-12 21:06:05)
Difficulty: 4 of 5Under Sum of Powers (in Numbers)
Posted on 2008-04-21 (5 Comments)
Hints/Tips Solving tips by Brian Smith (2008-04-24 00:42:31)
Difficulty: 4 of 5Under Curious Consecutive Conundrum (in Just Math)
Posted on 2008-04-08 (7 Comments)
re: What value for L? by Brian Smith (2008-04-10 00:15:01)
Difficulty: 3 of 5Under Broken Lights Out (in Logic)
Posted on 2008-04-07 (4 Comments)
Hint by Brian Smith (2008-04-09 21:37:12)
Difficulty: 4 of 5Under Knave Contest (in Liars and Knights)
Posted on 2008-04-03 (7 Comments)
re: Solution & Explanation by Brian Smith (2008-04-07 22:47:56)
Difficulty: 3 of 5Under Who's Younger? (in Liars and Knights)
Posted on 2008-04-01 (7 Comments)
Solution Solution by Brian Smith (2008-04-02 22:27:45)
Difficulty: 3 of 5Under Triangulation of Numbers (in Geometry)
Posted on 2008-03-18 (6 Comments)
Solution No Subject by Brian Smith (2008-03-20 00:56:39)
Difficulty: 3 of 5Under Unreliable scale (in Weights and Scales)
Posted on 2008-02-28 (3 Comments)
Solution Solution by Brian Smith (2008-03-01 01:50:21)
Difficulty: 3 of 5Under Circle And Intersection (in Geometry)
Posted on 2008-01-25 (6 Comments)
Solution Attempt by Brian Smith (2008-01-26 18:11:24)
Difficulty: 2 of 5Under Limit of the sequence? (in Just Math)
Posted on 2008-01-06 (8 Comments)
re: Solution by Brian Smith (2008-01-07 00:22:19)
Solution by Brian Smith (2008-01-07 00:19:47)
Difficulty: 3 of 5Under Ellipse And Minimum Parallelogram (in Geometry)
Posted on 2008-01-04 (4 Comments)
Some Thoughts re: Solution - Solution Set by Brian Smith (2008-01-07 22:59:27)
Solution Solution by Brian Smith (2008-01-05 23:11:54)
Gut reaction by Brian Smith (2008-01-04 12:44:58)
Difficulty: 3 of 5Under Laser Reconstruction: 6 targets, 5 mirrors (in General)
Posted on 2007-12-14 (6 Comments)
Solution 4 mirrors, 4x4 grid and 5 mirrors 4x3 grid by Brian Smith (2007-12-19 13:09:09)
re(2): 4 mirrors, 5x5 grid - profession?? by Brian Smith (2007-12-17 01:32:22)
4 mirrors, 5x5 grid by Brian Smith (2007-12-16 01:58:16)
Difficulty: 3 of 5Under Cyclic Hexagon And Ratio (in Geometry)
Posted on 2007-12-08 (6 Comments)
More Thoughts by Brian Smith (2007-12-10 01:25:58)
Difficulty: 1 of 5Under Word Oddity (5) No repeat workday (in Word Problems)
Posted on 2007-12-03 (5 Comments)
Solution by Brian Smith (2007-12-03 13:14:40)
Difficulty: 3 of 5Under Trapezing The Parabola (in Geometry)
Posted on 2007-12-01 (3 Comments)
Analytic Solution by Brian Smith (2007-12-03 13:04:30)
Difficulty: 3 of 5Under Any triangle, Trigonometric function - second episode! (in Just Math)
Posted on 2007-11-18 (12 Comments)
re: Solution by Brian Smith (2007-11-20 12:03:23)
Difficulty: 2 of 5Under Sum Reciprocal Lengths (in Geometry)
Posted on 2007-11-17 (6 Comments)
Solution by Brian Smith (2007-11-17 20:58:44)
Difficulty: 2 of 5Under Getting To PC With A Circle (in Geometry)
Posted on 2007-11-10 (9 Comments)
Solution by Brian Smith (2007-11-11 01:21:17)
Difficulty: 3 of 5Under Quadrilateral With A Difference (in Geometry)
Posted on 2007-11-08 (3 Comments)
Solution Solution by Brian Smith (2007-11-08 15:11:28)
Difficulty: 1 of 5Under Donuts (in Liars and Knights)
Posted on 2007-11-05 (6 Comments)
Solution by Brian Smith (2007-11-05 11:46:38)
Difficulty: 3 of 5Under Incenter and a Circumcircle (in Geometry)
Posted on 2007-10-28 (6 Comments)
Solution Solution by Brian Smith (2007-11-10 01:38:32)
Difficulty: 2 of 5Under Linear and quadratic (in Calculus)
Posted on 2007-10-23 (9 Comments)
re: By limits by Brian Smith (2007-10-24 01:59:49)
Solution Easy Trick Solution by Brian Smith (2007-10-23 10:46:57)
Difficulty: 2 of 5Under Laser Puzzle (in General)
Posted on 2007-10-22 (9 Comments)
re(3): Solution as address to Dej Mar (Thanks) by Brian Smith (2007-10-24 01:52:01)
re: Solution by Brian Smith (2007-10-23 10:35:19)
Difficulty: 3 of 5Under Rational Quadrilateral? (in Geometry)
Posted on 2007-10-18 (2 Comments)
Trapezoid by Brian Smith (2007-10-19 10:47:46)
Rectangle or Parallelogram by Brian Smith (2007-10-18 11:16:05)
Difficulty: 3 of 5Under Special Natural Numbers (in Numbers)
Posted on 2007-10-14 (8 Comments)
Some more thoughts by Brian Smith (2007-10-18 11:10:42)
re: Some were discovered.... by Brian Smith (2007-10-15 11:38:07)
Difficulty: 3 of 5Under Consider The Factors, Get Perfect Square? (in Just Math)
Posted on 2007-09-23 (4 Comments)
Solution No Subject by Brian Smith (2007-09-23 23:49:37)
Difficulty: 2 of 5Under Out of gas. (in Tricks)
Posted on 2007-09-22 (29 Comments)
re(2): I'm reaching here by Brian Smith (2007-09-25 11:11:27)
Difficulty: 3 of 5Under Collinear Intersections (in Geometry)
Posted on 2007-09-13 (1 Comments)
Monge's Circle Theorem by Brian Smith (2009-11-07 12:11:10)
Difficulty: 2 of 5Under Sum The Secants, Get 6 (in Geometry)
Posted on 2007-09-12 (2 Comments)
Solution Some Secants Sum Six by Brian Smith (2007-09-16 17:11:57)
Difficulty: 2 of 5Under Getting The Bases With 2007? (in Numbers)
Posted on 2007-09-09 (4 Comments)
re: another solution by Brian Smith (2007-10-19 10:59:09)
Difficulty: 3 of 5Under Getting Perfect Squares With 4 And 9? (in Just Math)
Posted on 2007-09-03 (3 Comments)
Solution If p is even by Brian Smith (2007-09-03 14:24:15)
Difficulty: 3 of 5Under Getting Squared With 1 And 16 (in Just Math)
Posted on 2007-09-01 (5 Comments)
Solution Solution by Brian Smith (2007-09-05 10:22:23)
Difficulty: 4 of 5Under Only One Operator (in Numbers)
Posted on 2007-08-26 (7 Comments)
Hints/Tips Part 1 Solution by Brian Smith (2007-08-28 10:43:08)
Difficulty: 3 of 5Under Grid of Little Squares (in Numbers)
Posted on 2007-08-07 (1 Comments)
Solution Solution by Brian Smith (2007-08-07 14:26:26)
Difficulty: 3 of 5Under Spies Like Us (in General)
Posted on 2007-07-30 (3 Comments)
Some Thoughts Defining Distance by Brian Smith (2007-08-03 20:55:54)
Difficulty: 3 of 5Under Quadruple Agent (in Probability)
Posted on 2007-07-25 (11 Comments)
Hints/Tips More thoughts by Brian Smith (2008-07-22 01:08:33)
My thoughts by Brian Smith (2008-07-18 20:52:12)
Difficulty: 3 of 5Under Subtract The Cubics, Get Product (in Just Math)
Posted on 2007-07-22 (5 Comments)
Solution by Brian Smith (2007-07-23 10:35:35)
Difficulty: 3 of 5Under Take Third Degree, Solve For Real (in Just Math)
Posted on 2007-06-27 (2 Comments)
Factoring Idea by Brian Smith (2007-06-27 23:39:53)
Difficulty: 4 of 5Under A Perplexing (Prime) Puzzle (in Just Math)
Posted on 2007-06-05 (5 Comments)
More number crunching by Brian Smith (2007-06-07 22:08:55)
Some number crunching by Brian Smith (2007-06-07 00:34:43)
Difficulty: 3 of 5Under Only one, one, one (in Calculus)
Posted on 2007-05-30 (5 Comments)
re: solution by Brian Smith (2007-05-31 15:11:55)
Solution by Brian Smith (2007-05-31 14:53:35)
Difficulty: 3 of 5Under Divide The Cubic, Get The Pairs (in Numbers)
Posted on 2007-05-26 (5 Comments)
re(2): Solution (a few questions) by Brian Smith (2007-05-28 23:59:42)
re(2): Solution (spoiler) by Brian Smith (2007-05-27 14:32:40)
Solution Solution by Brian Smith (2007-05-27 00:56:17)
Difficulty: 4 of 5Under Well Balanced Letter: F (in Shapes)
Posted on 2007-05-16 (7 Comments)
Some Thoughts Well Balanced F Extension by Brian Smith (2009-02-10 13:23:14)
re(2): maybe -- numerical confirmation and question -- equation solving by Brian Smith (2007-05-18 20:08:58)
Solution by Brian Smith (2007-05-17 15:36:23)
Difficulty: 3 of 5Under Square An Integer, Get Quartic (in Just Math)
Posted on 2007-05-13 (4 Comments)
Solution Squeeze Play (Solution) by Brian Smith (2007-05-14 23:02:03)
Difficulty: 3 of 5Under Add Square Roots, Get Real(m) (in Just Math)
Posted on 2007-05-06 (3 Comments)
Solution The unique solution by Brian Smith (2007-05-06 23:06:05)
Difficulty: 2 of 5Under Matrix Identity (in Just Math)
Posted on 2007-04-26 (8 Comments)
re: An Attempt To Generalisation by Brian Smith (2007-04-30 23:10:29)
Difficulty: 3 of 5Under A Near Diophantine Octagon Problem (in Geometry)
Posted on 2007-04-22 (10 Comments)
Question re(6): Solution by Brian Smith (2007-04-26 00:16:43)
re(4): Solution by Brian Smith (2007-04-25 12:12:54)
re(2): Solution by Brian Smith (2007-04-24 01:00:13)
Solution Solution by Brian Smith (2007-04-23 11:55:30)
Difficulty: 5 of 5Under Raise to the seventh power, get factor (in Numbers)
Posted on 2007-04-18 (5 Comments)
Solution Solution by Brian Smith (2007-04-21 16:09:38)
Difficulty: 4 of 5Under A Point in a Triangle (in Geometry)
Posted on 2007-04-12 (8 Comments)
re(2): on another look by Brian Smith (2007-04-13 12:24:27)
Difficulty: 2 of 5Under Proof positive: squares of integers (in Just Math)
Posted on 2007-04-07 (3 Comments)
Hints/Tips Third of three proved by Brian Smith (2007-04-09 14:32:52)
Hints/Tips Two of three proved by Brian Smith (2007-04-09 11:34:14)
Difficulty: 2 of 5Under Get The Quadruplets (in Just Math)
Posted on 2007-04-06 (3 Comments)
Solution All Answers Analytically by Brian Smith (2007-04-09 14:28:21)
Difficulty: 3 of 5Under More Harmonic Integers (2) (in Numbers)
Posted on 2007-03-28 (6 Comments)
Solution I think I got it by Brian Smith (2007-03-30 13:10:34)
Difficulty: 3 of 5Under Surprising Sudden Square (in Numbers)
Posted on 2007-03-24 (10 Comments)
Solution chains by Brian Smith (2007-03-25 12:02:56)
re: A start by Brian Smith (2007-03-25 00:01:34)
Difficulty: 3 of 5Under Appropriate Area (in Numbers)
Posted on 2007-03-21 (4 Comments)
re: Solution by Brian Smith (2007-03-22 14:01:04)
Difficulty: 3 of 5Under Polynomial Puzzle (in Just Math)
Posted on 2007-03-16 (7 Comments)
Solution Solution (and that fourth point) by Brian Smith (2007-03-17 21:52:42)
Difficulty: 2 of 5Under Integer coefficients (in Just Math)
Posted on 2007-03-13 (3 Comments)
No Linear Factors by Brian Smith (2007-03-14 21:09:54)
Difficulty: 2 of 5Under More Harmonic Integers (in Just Math)
Posted on 2007-03-12 (3 Comments)
Solution (and a half) by Brian Smith (2007-03-14 20:55:50)
Difficulty: 2 of 5Under 2+2 (in Tricks)
Posted on 2007-03-04 (16 Comments)
Spell it out by Brian Smith (2007-03-04 22:57:40)
Difficulty: 5 of 5Under Cutting Corners (in Geometry)
Posted on 2007-02-27 (20 Comments)
I got the solution right this time!! by Brian Smith (2007-03-03 20:28:15)
I was wrong by Brian Smith (2007-03-03 11:40:29)
Hints/Tips re(2): Corner Cutting Function by Brian Smith (2007-03-02 11:52:49)
Corner Cutting Function by Brian Smith (2007-03-01 13:03:23)
Difficulty: 5 of 5Under Binary Repunit Fibonaccis (in Numbers)
Posted on 2007-01-22 (6 Comments)
Research Results by Brian Smith (2016-07-02 20:10:42)
Difficulty: 3 of 5Under Astute Root Evaluation (in Just Math)
Posted on 2007-01-07 (2 Comments)
Some Thoughts re: For the simple case by Brian Smith (2016-12-18 15:16:16)
Difficulty: 5 of 5Under The art of fencing (in Shapes)
Posted on 2006-12-27 (6 Comments)
Some Thoughts Rectangular Answers by Brian Smith (2016-10-30 18:38:51)
Difficulty: 2 of 5Under Custom Dice (in Probability)
Posted on 2006-11-16 (5 Comments)
Solution re: Extension to question 2 by Brian Smith (2017-02-27 12:56:16)
Difficulty: 5 of 5Under Radioactive Coins (in Weights and Scales)
Posted on 2006-10-17 (18 Comments)
re(3): Fibonacci Connection.....placed by Brian Smith (2016-02-15 23:10:12)
Some Thoughts re: Fibonacci Connection by Brian Smith (2016-02-14 12:00:22)
Solution Fibonacci Connection by Brian Smith (2016-02-10 12:11:57)
Difficulty: 4 of 5Under Paint Job Pro (in Shapes)
Posted on 2006-09-19 (2 Comments)
Solution Necessary Colors by Brian Smith (2008-01-01 01:39:47)
Difficulty: 3 of 5Under Fermat for beginners (in Numbers)
Posted on 2006-09-14 (4 Comments)
Solution Solution, without invoking Fermat by Brian Smith (2016-06-26 10:34:55)
Difficulty: 2 of 5Under Mountains and Valleys (in Shapes)
Posted on 2006-07-19 (9 Comments)
Solution Got it! by Brian Smith (2016-03-05 11:23:03)
Hints/Tips No Subject by Brian Smith (2016-03-05 10:47:02)
Difficulty: 3 of 5Under Which is Which (in Weights and Scales)
Posted on 2006-07-07 (15 Comments)
Solution Another Solution by Brian Smith (2016-06-28 11:58:20)
Difficulty: 3 of 5Under Three Intercepts (in Just Math)
Posted on 2006-06-19 (7 Comments)
Solution Polynomial Solutions by Brian Smith (2016-07-09 14:54:42)
Difficulty: 2 of 5Under ABCDEABCDE is one (in General)
Posted on 2006-05-17 (3 Comments)
Found this in the OEIS by Brian Smith (2017-01-15 11:37:44)
Difficulty: 4 of 5Under Cross cut (in Shapes)
Posted on 2006-03-06 (18 Comments)
Solution Five pieces (likely intended solution) by Brian Smith (2009-06-22 01:42:05)
Difficulty: 4 of 5Under A Quartic Problem (in Just Math)
Posted on 2005-12-22 (7 Comments)
Solution General Solution by Brian Smith (2016-03-20 22:08:13)
Difficulty: 3 of 5Under Polyomino Puzzle (in Shapes)
Posted on 2005-11-22 (21 Comments)
Two Hints by Brian Smith (2005-11-28 08:54:38)
Difficulty: 2 of 5Under Closest to pi (in Just Math)
Posted on 2005-09-25 (25 Comments)
Another approximation by Brian Smith (2005-09-28 02:53:29)
Difficulty: 2 of 5Under Next Numbers Please #6 (in Sequences)
Posted on 2005-09-09 (4 Comments)
re: First Impressions (and some hints) by Brian Smith (2005-09-15 13:16:42)
Difficulty: 3 of 5Under Sorta pythagoric... (in Numbers)
Posted on 2005-09-01 (16 Comments)
Solution by Brian Smith (2005-09-18 03:18:11)
Difficulty: 1 of 5Under Knot or Not? (in Probability)
Posted on 2005-08-04 (16 Comments)
re(3): As I figure it - Definition of a knot by Brian Smith (2005-08-05 01:27:02)
Difficulty: 3 of 5Under Up or down or... (in Science)
Posted on 2005-07-22 (20 Comments)
Solution Another Solution by Brian Smith (2016-02-07 21:55:10)
Difficulty: 2 of 5Under Only 3 lines? (in Geometry)
Posted on 2005-07-14 (12 Comments)
Solution by Brian Smith (2005-07-15 01:23:15)
Difficulty: 3 of 5Under 8 8s (in Numbers)
Posted on 2005-07-11 (24 Comments)
Yet another solution by Brian Smith (2005-07-12 18:34:35)
Difficulty: 2 of 5Under Three Tests, Take Three! (in Weights and Scales)
Posted on 2005-06-23 (14 Comments)
One Gold Ring by Brian Smith (2005-06-27 22:34:17)
Difficulty: 3 of 5Under Similar Sides Sought (in Geometry)
Posted on 2005-06-20 (6 Comments)
Solution re: Almost there...I am there by Brian Smith (2005-06-24 23:48:10)
Difficulty: 3 of 5Under Twenty metal blocks (in Weights and Scales)
Posted on 2005-06-02 (18 Comments)
Identifying all the blocks in less than 19 weighings by Brian Smith (2005-06-07 21:26:13)
Still stuck on 19 by Brian Smith (2005-06-03 21:14:42)
Difficulty: 4 of 5Under The Midville Muddlers (in Logic)
Posted on 2005-04-15 (22 Comments)
Problem source by Brian Smith (2005-04-19 15:08:53)
Difficulty: 3 of 5Under Two false coins (in Weights and Scales)
Posted on 2005-03-25 (11 Comments)
Solution Solution without knowing if the fakes are equal by Brian Smith (2005-06-02 21:18:14)
Difficulty: 5 of 5Under Next Numbers Please #4 (in Sequences)
Posted on 2004-11-16 (13 Comments)
re(2): Solution (if errors in problem) by Brian Smith (2004-11-20 08:18:21)
re: Solution (yes, errors in problem) by Brian Smith (2004-11-20 00:20:10)
Hint by Brian Smith (2004-11-17 23:28:29)
Difficulty: 3 of 5Under Three at a Time (in General)
Posted on 2004-10-26 (23 Comments)
A little clarification: by Brian Smith (2004-10-27 12:52:17)
Difficulty: 2 of 5Under Prime Time Revisited (in Just Math)
Posted on 2004-10-22 (17 Comments)
Arithmetic progression by Brian Smith (2004-10-22 22:23:00)
Difficulty: 3 of 5Under No Rotation Dissection (in Shapes)
Posted on 2004-10-19 (25 Comments)
Hints by Brian Smith (2004-10-21 12:35:34)
re(2): Think I have it by Brian Smith (2004-10-21 12:33:08)
Difficulty: 2 of 5Under Curious Cubic Calculation? (in Numbers)
Posted on 2004-10-13 (14 Comments)
Solution Full Solution by Brian Smith (2004-10-13 13:06:00)
Difficulty: 5 of 5Under Cube the Cube (in Shapes)
Posted on 2004-10-02 (12 Comments)
Square the Square by Brian Smith (2004-10-03 00:29:12)
re: Question by Brian Smith (2004-10-03 00:14:37)
Difficulty: 5 of 5Under Partitioning Space (in Geometry)
Posted on 2004-09-13 (13 Comments)
re: Part 3?? by Brian Smith (2004-09-14 12:55:27)
Difficulty: 4 of 5Under Measure that angle III (in Geometry)
Posted on 2004-09-07 (25 Comments)
re: Solution by cheating by Brian Smith (2004-09-08 15:28:57)
Difficulty: 4 of 5Under Interesting Function (2) (in Just Math)
Posted on 2004-09-03 (6 Comments)
Real numbers by Brian Smith (2004-09-03 15:54:33)
Difficulty: 2 of 5Under Another game of nim (in Games)
Posted on 2004-09-02 (10 Comments)
re(4): Solution - Generalized! by Brian Smith (2004-09-03 22:50:33)
Difficulty: 2 of 5Under Moving Furniture (in General)
Posted on 2004-08-30 (7 Comments)
re(2): Imperfect Armchair Solution - I'm wrong by Brian Smith (2004-09-16 23:38:32)
Difficulty: 2 of 5Under I recognise it..... .....A bit (in Sequences)
Posted on 2004-08-27 (4 Comments)
No Subject by Brian Smith (2004-08-27 08:39:28)
Difficulty: 4 of 5Under Points On A Circle (in Geometry)
Posted on 2004-08-14 (17 Comments)
Thoughts by Brian Smith (2016-02-21 13:58:00)
Difficulty: 3 of 5Under A Tighter Fit (in Shapes)
Posted on 2004-07-29 (19 Comments)
re: Solution by Brian Smith (2004-08-27 08:13:36)
Close but no cigar by Brian Smith (2004-07-30 08:05:41)
Difficulty: 3 of 5Under Four Weights (in Weights and Scales)
Posted on 2004-07-25 (33 Comments)
re(3): done in 3 weighings.... I think =P by Brian Smith (2004-07-26 21:53:33)
re: done in 3 weighings.... I think =P by Brian Smith (2004-07-26 08:11:29)
Difficulty: 3 of 5Under Renumbered Dice (in Probability)
Posted on 2004-07-20 (6 Comments)
Problem Edit by Brian Smith (2004-07-20 11:39:52)
Difficulty: 4 of 5Under A Point and a Cube (in Geometry)
Posted on 2004-07-16 (23 Comments)
re(2): AAAAAAAAARRRRRRRRRGGGGGGGHHHHHHHH! by Brian Smith (2004-07-20 08:12:50)
AAAAAAAAARRRRRRRRRGGGGGGGHHHHHHHH! by Brian Smith (2004-07-18 23:20:14)
re: PD = 11 and not 9? - PROBLEM CORRECTION by Brian Smith (2004-07-18 12:46:40)
re: rough stuff by Brian Smith (2004-07-17 18:59:46)
Difficulty: 2 of 5Under It's not there! (in Cryptography)
Posted on 2004-07-12 (6 Comments)
Imagine a program like this! by Brian Smith (2004-07-12 10:27:13)
Difficulty: 3 of 5Under Random Number Generator (in Algorithms)
Posted on 2004-06-08 (26 Comments)
If it even matters by Brian Smith (2004-06-16 13:47:48)
re: Implementing Thalamus's 47-bits with Brian Smith's bit-stream. by Brian Smith (2004-06-16 13:46:23)
re(5): solution by Brian Smith (2004-06-16 08:48:29)
Bit stream by Brian Smith (2004-06-15 15:19:29)
My algorithm by Brian Smith (2004-06-14 18:59:16)
Difficulty: 2 of 5Under Gloves (in Numbers)
Posted on 2004-06-03 (30 Comments)
Shame on me! by Brian Smith (2004-06-04 20:06:36)
re(2): Better than 28. by Brian Smith (2004-06-04 08:30:36)
Better than 28. by Brian Smith (2004-06-03 21:48:20)
re(3): huh? by Brian Smith (2004-06-03 18:12:08)
Difficulty: 4 of 5Under Hexagonal Dilemma (in Geometry)
Posted on 2004-06-02 (18 Comments)
Solving the arccos equation. by Brian Smith (2004-06-04 08:46:20)
Difficulty: 3 of 5Under More Bird Watching (in Tricks)
Posted on 2004-06-02 (15 Comments)
Solution by Brian Smith (2004-06-02 09:43:06)
Difficulty: 5 of 5Under Next Numbers Please #3 (in Sequences)
Posted on 2004-06-01 (30 Comments)
More terms in the sequence by Brian Smith (2004-06-11 13:01:14)
The numbers I was looking for by Brian Smith (2004-06-10 17:46:47)
re: Solution--another guess... by Brian Smith (2004-06-10 13:34:03)
re(2): Binary by Brian Smith (2004-06-10 11:47:34)
Binary by Brian Smith (2004-06-07 17:24:32)
re: some observations... by Brian Smith (2004-06-03 11:51:54)
Difficulty: 3 of 5Under Yet one more coin sorting problem (in Weights and Scales)
Posted on 2004-05-31 (20 Comments)
Solution by Brian Smith (2004-05-31 15:22:06)
Difficulty: 2 of 5Under The Fur Dresser's Mistake (in Geometry)
Posted on 2004-05-28 (12 Comments)
Solution Solution by Brian Smith (2004-05-29 09:45:27)
Difficulty: 2 of 5Under Faulty Scales (in Weights and Scales)
Posted on 2004-05-23 (8 Comments)
Weighing in on this... by Brian Smith (2004-05-24 10:09:51)
Difficulty: 2 of 5Under Fraction Magic Square (in Numbers)
Posted on 2004-05-22 (6 Comments)
re: Too easy? by Brian Smith (2004-05-24 09:58:45)
Difficulty: 1 of 5Under Block Tour (in Tricks)
Posted on 2004-05-19 (22 Comments)
Solution Solution by Brian Smith (2004-05-19 09:20:39)
Difficulty: 3 of 5Under Square Divisions (in Shapes)
Posted on 2004-05-18 (5 Comments)
re: ummm... by Brian Smith (2004-05-18 22:13:48)
Difficulty: 5 of 5Under Ellipses (in Geometry)
Posted on 2004-05-17 (12 Comments)
re: circumscribe sol w just 1st calculus by Brian Smith (2004-06-01 08:21:53)
Steiner Ellipses by Brian Smith (2004-05-18 22:02:25)
Solution General Solution by Brian Smith (2004-05-18 14:00:29)
Difficulty: 3 of 5Under Powers of powers (in Calculus)
Posted on 2004-05-11 (11 Comments)
Solution Power Tower by Brian Smith (2004-05-11 15:29:34)
Difficulty: 2 of 5Under Particle Acceleration (in General)
Posted on 2004-05-06 (24 Comments)
Solution by Brian Smith (2004-05-06 09:53:03)
Difficulty: 3 of 5Under Strange pyramid (in Geometry)
Posted on 2004-05-03 (10 Comments)
Distinct integer edges by Brian Smith (2004-05-04 11:38:17)
Difficulty: 2 of 5Under Missing Clue (in Logic)
Posted on 2004-04-27 (15 Comments)
Solution by Brian Smith (2004-04-27 12:19:11)
Difficulty: 5 of 5Under The Fifteen Steps (in Games)
Posted on 2004-04-26 (16 Comments)
Finally, the solution for the no-passing game. by Brian Smith (2005-04-19 15:36:55)
Hints/Tips Four man game by Brian Smith (2004-04-27 15:24:16)
Solution The second part by Brian Smith (2004-04-27 08:40:16)
Difficulty: 3 of 5Under Finding the maximum (in Algorithms)
Posted on 2004-04-21 (16 Comments)
Low, Median and High by Brian Smith (2004-04-21 20:06:02)
Difficulty: 2 of 5Under The Central Cell (in Games)
Posted on 2004-04-16 (11 Comments)
re(2): The second part by Brian Smith (2004-04-16 19:19:29)
The second part by Brian Smith (2004-04-16 14:09:32)
Difficulty: 3 of 5Under The many sages (in Logic)
Posted on 2004-04-13 (24 Comments)
Many Sages by Brian Smith (2004-04-13 14:05:04)
Difficulty: 2 of 5Under A flat ball? (in Geometry)
Posted on 2004-04-08 (24 Comments)
re: A related question... by Brian Smith (2004-04-13 14:26:51)
re(2): The 720 degree deficit - Euler's formula by Brian Smith (2004-04-12 10:26:10)
Pentagons and Hexagons by Brian Smith (2004-04-12 09:15:46)
Difficulty: 2 of 5Under 2 digit Palindrome (in Numbers)
Posted on 2004-04-05 (23 Comments)
re: 3-digits soln by Brian Smith (2004-04-05 12:12:54)
The infamous 196 by Brian Smith (2004-04-05 09:21:29)
Difficulty: 2 of 5Under Another Pack of Prudent Pirates (in General)
Posted on 2004-04-01 (7 Comments)
Dividing the pieces of eight by Brian Smith (2004-04-01 14:22:33)
Difficulty: 3 of 5Under new operations (in Just Math)
Posted on 2004-03-31 (14 Comments)
The _ operator by Brian Smith (2004-03-31 14:52:43)
Difficulty: 3 of 5Under Safety from the Queen II (in General)
Posted on 2004-03-30 (5 Comments)
10 so far . . . by Brian Smith (2004-03-30 14:19:58)
Difficulty: 3 of 5Under Poetry in motion (in Riddles)
Posted on 2004-03-25 (151 Comments)
Something that crossed my mind . . . by Brian Smith (2004-03-25 09:15:36)
Difficulty: 4 of 5Under Chords and Chords (in Geometry)
Posted on 2004-03-24 (23 Comments)
Thoughts by Brian Smith (2004-03-25 09:00:56)
Difficulty: 3 of 5Under Fraction Frustration (in Numbers)
Posted on 2004-03-24 (10 Comments)
Solution by Brian Smith (2004-03-24 08:48:28)
Difficulty: 3 of 5Under A dangerous compound (in Science)
Posted on 2004-03-22 (43 Comments)
Solution DHMO by Brian Smith (2004-03-22 09:03:37)
Difficulty: 2 of 5Under Patrolling the beat (in General)
Posted on 2004-03-18 (16 Comments)
Another answer by Brian Smith (2004-03-23 08:48:54)
Difficulty: 3 of 5Under A point in a square (in Geometry)
Posted on 2004-03-17 (7 Comments)
Two possibilities by Brian Smith (2004-03-18 09:22:22)
Difficulty: 4 of 5Under Toggler and Triggler (in Games)
Posted on 2004-03-12 (9 Comments)
5x5 triggler solution by Brian Smith (2004-03-16 10:24:08)
Difficulty: 4 of 5Under Primal Magic Square (in General)
Posted on 2004-03-09 (15 Comments)
re(2): More Solutions by Brian Smith (2004-03-11 21:09:13)
More Solutions by Brian Smith (2004-03-11 17:14:14)
Solution using 1 by Brian Smith (2004-03-10 11:33:31)
Difficulty: 3 of 5Under The Sliding Rooks (in Games)
Posted on 2004-03-08 (17 Comments)
re: the Sliding Rooks in 4 moves by Brian Smith (2004-04-15 09:23:00)
Difficulty: 3 of 5Under Truncated Cube (in Shapes)
Posted on 2004-03-04 (7 Comments)
Solution by Brian Smith (2004-03-04 10:29:45)
Difficulty: 3 of 5Under Open By Majority (in General)
Posted on 2004-03-03 (45 Comments)
re(4): About the keys and locks by Brian Smith (2004-03-04 12:04:14)
re: Revised solution to revised puzzle by Brian Smith (2004-03-04 12:03:20)
re(2): About the keys and locks by Brian Smith (2004-03-04 10:32:10)
About the keys and locks by Brian Smith (2004-03-04 10:19:39)
Difficulty: 4 of 5Under B-Palindromes (in Numbers)
Posted on 2004-02-25 (11 Comments)
A Solution by Brian Smith (2004-02-25 15:02:57)
Difficulty: 3 of 5Under Looking for n (in Numbers)
Posted on 2004-02-24 (12 Comments)
Solution (?) by Brian Smith (2004-02-24 15:36:24)
Difficulty: 4 of 5Under Repeated addition (in Sequences)
Posted on 2004-02-20 (14 Comments)
Solution Solution by Brian Smith (2004-02-23 13:06:27)
Some thoughts by Brian Smith (2004-02-20 14:31:35)
Difficulty: 4 of 5Under Archimedes' Cattle (in General)
Posted on 2004-02-17 (6 Comments)
re: full solution - exact fractions by Brian Smith (2004-02-18 11:32:13)
Difficulty: 3 of 5Under Letters to numbers (in Cryptography)
Posted on 2004-02-13 (35 Comments)
re: Not 84! ?? by Brian Smith (2004-02-20 12:20:07)
"Equality isnt important" and 84 by Brian Smith (2004-02-20 11:53:04)
84? by Brian Smith (2004-02-20 09:39:10)
Difficulty: 4 of 5Under Triple Negative (in Logic)
Posted on 2004-02-12 (19 Comments)
Hints/Tips Inverting seven inputs with three inverters by Brian Smith (2013-10-26 11:47:17)
Difficulty: 3 of 5Under A = B = AB (in Word Problems)
Posted on 2004-02-10 (28 Comments)
Out of all the responses so far ...... by Brian Smith (2004-02-12 09:07:34)
Difficulty: 3 of 5Under Set Me Up (in Numbers)
Posted on 2004-02-10 (31 Comments)
re(4): Solution FINAL WORD by Brian Smith (2004-02-10 15:13:44)
Solution by Brian Smith (2004-02-10 10:58:38)
Difficulty: 3 of 5Under The Conversing Club 2 (in General)
Posted on 2004-02-06 (5 Comments)
Round Robin by Brian Smith (2004-02-06 12:40:52)
Difficulty: 2 of 5Under Two Packs Of Cards (in Probability)
Posted on 2004-02-05 (14 Comments)
Solution by Brian Smith (2004-02-05 09:09:12)
Difficulty: 3 of 5Under A Boy, a Girl, a Dog, and a Bicycle (in General)
Posted on 2004-02-03 (21 Comments)
Solution by Brian Smith (2004-02-04 10:44:36)
Difficulty: 2 of 5Under The glass balls (in General)
Posted on 2004-01-30 (5 Comments)
Answer by Brian Smith (2004-01-30 14:08:41)
Difficulty: 3 of 5Under Medals (in Numbers)
Posted on 2004-01-29 (5 Comments)
Solution by Brian Smith (2004-01-29 14:46:46)
Difficulty: 2 of 5Under Game of luck (in Probability)
Posted on 2004-01-27 (22 Comments)
solution by Brian Smith (2004-01-27 13:56:34)
Difficulty: 1 of 5Under Alphanumeric Ambiguity (in Word Problems)
Posted on 2004-01-26 (14 Comments)
Solution The word is... by Brian Smith (2004-01-26 09:28:00)
Difficulty: 5 of 5Under Fill the Grid (in Numbers)
Posted on 2004-01-21 (28 Comments)
Solution Update by Brian Smith (2005-03-31 23:56:16)
re: My algorithm - re: source code by Brian Smith (2004-02-05 12:16:25)
To Rawlyn by Brian Smith (2004-02-02 13:35:09)
re(2): Very slightly better... by Brian Smith (2004-02-02 09:52:16)
re: I'm on it - Good luck by Brian Smith (2004-01-30 09:38:33)
Difficulty: 2 of 5Under Squares and Rectangles (in Just Math)
Posted on 2004-01-21 (20 Comments)
Solution by Brian Smith (2004-01-21 09:22:00)
Difficulty: 3 of 5Under Sorting Coins (in Weights and Scales)
Posted on 2004-01-18 (11 Comments)
There is a solution in . . . . by Brian Smith (2004-01-20 12:15:45)
Difficulty: 5 of 5Under How many points can you place? (in Games)
Posted on 2004-01-16 (25 Comments)
This problem is also known as ... by Brian Smith (2004-01-21 10:54:39)
Difficulty: 3 of 5Under ETW (in Word Problems)
Posted on 2004-01-09 (9 Comments)
Three words by Brian Smith (2004-01-09 10:22:39)
Difficulty: 4 of 5Under A smart prisoner? (in Probability)
Posted on 2004-01-08 (22 Comments)
re: Solution by Brian Smith (2004-01-08 11:49:44)
Solution Solution by Brian Smith (2004-01-08 11:45:51)
Difficulty: 3 of 5Under I've Been Working... (in Geometry)
Posted on 2004-01-07 (3 Comments)
re: First Steps by Brian Smith (2004-01-07 11:17:58)
Difficulty: 3 of 5Under Divisibility (in Just Math)
Posted on 2004-01-06 (11 Comments)
Solution by Brian Smith (2004-01-06 10:56:19)
Difficulty: 3 of 5Under Two Encrypted Questions (in Cryptography)
Posted on 2003-12-22 (4 Comments)
Hints by Brian Smith (2004-01-02 16:16:46)
Difficulty: 3 of 5Under Shapely Figures (in Sequences)
Posted on 2003-12-12 (10 Comments)
Solution by Brian Smith (2003-12-12 10:42:48)
Difficulty: 4 of 5Under Three threes, or two twos? (in Just Math)
Posted on 2003-12-09 (3 Comments)
f(x) = x+1 by Brian Smith (2003-12-09 15:43:35)
Difficulty: 2 of 5Under The Ladder (in Just Math)
Posted on 2003-12-09 (20 Comments)
re(6): solution by Brian Smith (2003-12-09 12:08:02)
Solution Solution by Brian Smith (2003-12-09 11:59:02)
Difficulty: 2 of 5Under Squares and Cubes (in Numbers)
Posted on 2003-12-06 (21 Comments)
Any other primitive solutions? by Brian Smith (2003-12-09 10:35:35)
Difficulty: 3 of 5Under Piece o' Cake (in Geometry)
Posted on 2003-12-04 (22 Comments)
re(3): solution by Brian Smith (2003-12-05 09:56:49)
An idea by Brian Smith (2003-12-04 12:45:38)
Difficulty: 4 of 5Under Tricky Triangle (in Numbers)
Posted on 2003-12-03 (15 Comments)
re: wording change by Brian Smith (2003-12-03 11:45:15)
Difficulty: 4 of 5Under The Amazing Stamp (in Geometry)
Posted on 2003-12-01 (45 Comments)
Solution by Brian Smith (2003-12-03 11:22:29)
Three points by Brian Smith (2003-12-01 14:28:30)
Difficulty: 3 of 5Under Three numbers (in Just Math)
Posted on 2003-11-17 (21 Comments)
Solution Another Solution by Brian Smith (2016-02-21 15:49:21)
Difficulty: 1 of 5Under Not another one! (in Tricks)
Posted on 2003-11-13 (26 Comments)
Keep off the grass by Brian Smith (2003-11-13 12:54:26)
Difficulty: 3 of 5Under Your Ducky Number (in Numbers)
Posted on 2003-11-07 (14 Comments)
Solution by Brian Smith (2003-11-07 11:05:15)
Difficulty: 2 of 5Under More Trees (in Shapes)
Posted on 2003-10-30 (27 Comments)
re: Full Solution - Another solution by Brian Smith (2003-10-31 13:02:02)
Difficulty: 4 of 5Under Tiger - Man (in General)
Posted on 2003-10-29 (15 Comments)
re(2): Specifically... by Brian Smith (2003-10-30 12:09:48)
Difficulty: 3 of 5Under Short but Sweet (in Games)
Posted on 2003-10-28 (48 Comments)
Take me out to the ball game .... by Brian Smith (2003-10-28 10:57:35)
Difficulty: 3 of 5Under Pizza Cut (in Just Math)
Posted on 2003-10-27 (14 Comments)
re(4): full solution by Brian Smith (2003-10-29 11:41:03)
Difficulty: 4 of 5Under Prime sequence (in Numbers)
Posted on 2003-10-23 (14 Comments)
22 terms by Brian Smith (2003-10-23 10:55:45)
Difficulty: 4 of 5Under That's a Load of Craps! (in Probability)
Posted on 2003-10-22 (12 Comments)
A start by Brian Smith (2003-10-22 12:38:27)
Difficulty: 2 of 5Under Summer Vacation (in Riddles)
Posted on 2003-10-22 (40 Comments)
re(2): Are you sure what these geographic points are ? by Brian Smith (2003-10-22 10:19:37)
Difficulty: 5 of 5Under The Nth Sequence (in Sequences)
Posted on 2003-10-21 (9 Comments)
Nth term by Brian Smith (2003-10-21 15:44:24)
Difficulty: 3 of 5Under Twin Trouble (in Just Math)
Posted on 2003-10-21 (14 Comments)
re(2): A solution by Brian Smith (2003-10-23 11:24:54)
A solution by Brian Smith (2003-10-21 11:31:01)
Difficulty: 4 of 5Under Four Tangent Circles (in Shapes)
Posted on 2003-10-20 (13 Comments)
re: solution by Brian Smith (2003-10-21 09:30:20)
Difficulty: 5 of 5Under Difficult Sequence (in Sequences)
Posted on 2003-10-18 (19 Comments)
re: An alternate approach - I think I got it by Brian Smith (2003-10-27 10:46:37)
re(2): An alternate approach by Brian Smith (2003-10-21 13:53:37)
An alternate approach by Brian Smith (2003-10-21 13:22:16)
re: AARRGG.. by Brian Smith (2003-10-20 15:21:35)
Difficulty: 4 of 5Under Hello Operator (in Just Math)
Posted on 2003-10-17 (19 Comments)
re: freaky solution by Brian Smith (2003-10-29 13:12:08)
re: My solution by Brian Smith (2003-10-21 11:05:20)
Difficulty: 3 of 5Under Remainder (in Just Math)
Posted on 2003-10-16 (9 Comments)
Hints/Tips By inspection... by Brian Smith (2003-10-16 09:38:41)
Difficulty: 3 of 5Under Playing With Marbles (in Probability)
Posted on 2003-10-13 (22 Comments)
re: Have you lost your marbles ? by Brian Smith (2003-10-13 21:04:14)
Difficulty: 1 of 5Under 00 Separate (in Just Math)
Posted on 2003-10-10 (13 Comments)
A solution by Brian Smith (2003-10-10 15:22:26)
Difficulty: 4 of 5Under Strike a Chord (..Any Chord) (in Geometry)
Posted on 2003-10-09 (51 Comments)
re: Different Approach (Continued) by Brian Smith (2003-10-13 19:34:14)
re: An elegant solution by Brian Smith (2003-10-13 09:46:13)
Difficulty: 3 of 5Under Fifth Thursdays (in Algorithms)
Posted on 2003-10-06 (2 Comments)
A few thoughts.. by Brian Smith (2003-10-07 14:53:33)
Difficulty: 3 of 5Under Line Drive (in Sequences)
Posted on 2003-10-03 (19 Comments)
re: Aha! by Brian Smith (2003-10-09 09:48:46)
Difficulty: 3 of 5Under The Mazing (in Algorithms)
Posted on 2003-10-02 (4 Comments)
Going in Circles by Brian Smith (2003-10-03 09:29:32)
Difficulty: 3 of 5Under Words in Common 7 (in Word Problems)
Posted on 2003-09-30 (16 Comments)
re(2): Not only do they all have 7 letters, but... by Brian Smith (2003-10-01 14:37:37)
Difficulty: 4 of 5Under e and pi (in Just Math)
Posted on 2003-09-26 (7 Comments)
Solution by Brian Smith (2003-09-26 14:30:43)
Difficulty: 3 of 5Under Simultaneous Equations (in Numbers)
Posted on 2003-09-25 (17 Comments)
re(2): Trivial solution by Brian Smith (2003-09-25 15:23:33)
The Solution by Brian Smith (2003-09-25 15:22:48)
Trivial solution by Brian Smith (2003-09-25 14:31:14)
Difficulty: 4 of 5Under Word Ladders (in Algorithms)
Posted on 2003-09-24 (11 Comments)
Initial thoughts by Brian Smith (2003-09-24 14:20:57)
Difficulty: 3 of 5Under Origamic (in Geometry)
Posted on 2003-09-23 (11 Comments)
'No Comment' should be 'Solution' by Brian Smith (2003-09-23 15:14:54)
Solution No Subject by Brian Smith (2003-09-23 15:13:33)
Difficulty: 2 of 5Under What Happened ? (in Numbers)
Posted on 2003-09-23 (9 Comments)
Solution and more by Brian Smith (2003-09-23 11:43:19)
Difficulty: 2 of 5Under Construct a Pentagram (in Shapes)
Posted on 2003-09-22 (12 Comments)
A trick by Brian Smith (2003-09-22 09:28:00)
Difficulty: 5 of 5Under print 'print 'print 'print ... (in Algorithms)
Posted on 2003-09-19 (32 Comments)
re: Solution by Brian Smith (2003-11-11 13:10:12)
Self Printing Program in Java by Brian Smith (2003-09-24 14:19:11)
re: Real solution(JAVA) - another problem by Brian Smith (2003-09-24 11:31:08)
re: Java by Brian Smith (2003-09-24 09:14:46)
re(2): Self Printing Program in BASIC by Brian Smith (2003-09-23 14:27:23)
re: Self Printing Program in BASIC by Brian Smith (2003-09-23 13:38:07)
Self Printing Program in BASIC by Brian Smith (2003-09-23 13:36:54)
Some Thoughts A little theory by Brian Smith (2003-09-22 09:34:43)
On a C64 .... by Brian Smith (2003-09-19 13:58:29)
Difficulty: 1 of 5Under The famous horse (in Tricks)
Posted on 2003-09-17 (26 Comments)
re: WRONG, Gamer !!!!!!!! by Brian Smith (2003-09-18 15:08:21)
Difficulty: 2 of 5Under Pip Me! (in General)
Posted on 2003-09-16 (11 Comments)
No Subject by Brian Smith (2003-09-16 10:16:48)
Difficulty: 4 of 5Under Third Base (in Cryptography)
Posted on 2003-09-15 (13 Comments)
Some Thoughts I think Im onto something .... by Brian Smith (2003-09-17 14:13:36)
Difficulty: 4 of 5Under Collision Course (in Algorithms)
Posted on 2003-09-11 (11 Comments)
re: Two robots: I really need to proofread better by Brian Smith (2003-09-11 14:33:46)
Two robots, same program by Brian Smith (2003-09-11 14:29:13)
Difficulty: 3 of 5Under Counting Exercise (in Numbers)
Posted on 2003-09-10 (9 Comments)
12 more cents by Brian Smith (2003-09-11 09:41:03)
My 15 cents on this by Brian Smith (2003-09-11 09:38:14)
Difficulty: 3 of 5Under Got a Minute? (in Logic)
Posted on 2003-09-10 (35 Comments)
re: double speed by Brian Smith (2003-10-13 19:36:49)
Solution Tick Tock goes the clock ... (Solution) by Brian Smith (2003-10-06 14:30:02)
re(2): Closer and closer by Brian Smith (2003-09-18 14:31:49)
Closer and closer by Brian Smith (2003-09-16 10:01:39)
Thoughts by Brian Smith (2003-09-10 11:26:06)
Difficulty: 4 of 5Under Marbles Bonanza (in Paradoxes)
Posted on 2003-09-08 (83 Comments)
Defining Infinity by Brian Smith (2003-09-09 09:59:51)
Difficulty: 4 of 5Under Lumber Netters (in Numbers)
Posted on 2003-09-08 (9 Comments)
Sequence Four by Brian Smith (2003-10-07 10:55:51)
Difficulty: 3 of 5Under Towers of Hanoi (in Algorithms)
Posted on 2003-09-07 (21 Comments)
Parity by Brian Smith (2003-09-09 10:06:49)
Difficulty: 3 of 5Under Roadway Riddle (in General)
Posted on 2003-08-31 (25 Comments)
Honk that horn! by Brian Smith (2003-09-03 14:33:10)
Difficulty: 4 of 5Under Scale game (in Weights and Scales)
Posted on 2003-08-06 (10 Comments)
Solution re: Better than 50% - details by Brian Smith (2003-09-02 14:19:40)
Better than 50% by Brian Smith (2003-09-02 09:44:56)
Difficulty: 4 of 5Under Leapfrog (in General)
Posted on 2003-06-24 (18 Comments)
Solution Level 5 Solution by Brian Smith (2003-10-16 12:18:26)
20 checkers to level 4 by Brian Smith (2003-09-02 09:58:10)
Difficulty: 4 of 5Under Knights being Liars? (in Liars and Knights)
Posted on 2003-06-10 (24 Comments)
Perception and Reality by Brian Smith (2003-06-10 15:07:47)
Difficulty: 3 of 5Under Faces and Eyes (in Riddles)
Posted on 2003-06-10 (17 Comments)
Some thoughts by Brian Smith (2003-06-10 15:11:51)
Difficulty: 1 of 5Under Number machine problem 1 (in Algorithms)
Posted on 2003-06-08 (12 Comments)
Category Placement? by Brian Smith (2003-06-09 15:56:35)
Difficulty: 5 of 5Under Let it Snow (in Calculus)
Posted on 2003-06-05 (12 Comments)
re: Solution by Brian Smith (2003-06-05 13:32:42)
Difficulty: 3 of 5Under Fifty Bucks for a Dollar bill? (in Logic)
Posted on 2003-06-03 (66 Comments)
re(4): Here's an idea by Brian Smith (2003-06-05 17:03:07)
re: Here's an idea by Brian Smith (2003-06-05 13:39:15)
Its all about the first bid. by Brian Smith (2003-06-04 14:16:05)
Thinking about making a profit by Brian Smith (2003-06-03 16:37:28)
Difficulty: 2 of 5Under Primary Product (in Just Math)
Posted on 2003-06-02 (25 Comments)
Off the top of my head... by Brian Smith (2003-06-02 13:41:36)
Difficulty: 3 of 5Under How did he die? (in Riddles)
Posted on 2003-06-02 (40 Comments)
Death Theory by Brian Smith (2003-06-03 17:05:30)
Difficulty: 3 of 5Under 10001, 100010001, .... (in Numbers)
Posted on 2003-05-23 (12 Comments)
First observations by Brian Smith (2003-05-23 14:21:20)
Difficulty: 5 of 5Under Regular Pentagon (Classic) (in Geometry)
Posted on 2003-05-15 (17 Comments)
If you really want a challenge ... by Brian Smith (2003-05-23 15:13:01)
Difficulty: 5 of 5Under Many coins - one fake (in Weights and Scales)
Posted on 2003-05-14 (20 Comments)
Weighing in on this one.... by Brian Smith (2003-05-14 09:21:22)
Difficulty: 3 of 5Under Tetra-productial numbers (in Numbers)
Posted on 2003-05-13 (6 Comments)
Solution by Brian Smith (2003-05-13 08:03:13)
Difficulty: 3 of 5Under Next in Line (in Sequences)
Posted on 2003-05-12 (9 Comments)
Next up is ... by Brian Smith (2003-05-12 08:16:42)
Difficulty: 3 of 5Under Paint My Love (in Just Math)
Posted on 2003-05-12 (4 Comments)
Solution Linear maximization (Solution) by Brian Smith (2003-05-12 05:09:37)
Difficulty: 2 of 5Under Internal & External (in Sequences)
Posted on 2003-05-09 (15 Comments)
Some Thoughts re(2): A Painted Cube by Brian Smith (2003-05-14 04:34:11)
Some Thoughts A Painted Cube by Brian Smith (2003-05-13 07:11:22)
First guess.... by Brian Smith (2003-05-09 09:17:38)
Difficulty: 4 of 5Under Magic trick (in Games)
Posted on 2003-05-08 (20 Comments)
re(2): How i would do it - How it works by Brian Smith (2003-05-08 07:49:47)
How i would do it by Brian Smith (2003-05-08 07:34:41)
Difficulty: 4 of 5Under Least But Not The Last (in Logic)
Posted on 2003-05-08 (12 Comments)
Some Thoughts {P, r, o, o, f} by Brian Smith (2003-05-08 06:55:32)
Difficulty: 2 of 5Under Cool sequence 2 (in Sequences)
Posted on 2003-05-07 (15 Comments)
re: I had a cool theory by Brian Smith (2003-05-08 10:02:17)
Off the top of my head.... by Brian Smith (2003-05-07 08:39:12)
Difficulty: 3 of 5Under Large Number (in Just Math)
Posted on 2003-05-06 (18 Comments)
Try this number by Brian Smith (2003-05-06 07:58:44)
Difficulty: 4 of 5Under The Hat and the River (in General)
Posted on 2003-05-05 (24 Comments)
re: solution by Brian Smith (2003-05-06 08:12:18)
I remember this one by Brian Smith (2003-05-05 10:18:10)
Difficulty: 3 of 5Under Can 1 Dollar = 1 Cent (in Tricks)
Posted on 2003-05-03 (25 Comments)
Solution by Brian Smith (2003-05-05 03:42:41)
Difficulty: 3 of 5Under 9 random digits (in Algorithms)
Posted on 2003-05-02 (20 Comments)
The goal of this problem.... by Brian Smith (2003-05-02 08:16:58)
Difficulty: 3 of 5Under Can You Find The Rule (in Sequences)
Posted on 2003-05-02 (11 Comments)
re(2): The next next number by Brian Smith (2003-05-08 08:05:39)
The next next number by Brian Smith (2003-05-07 08:45:44)
Solution by Brian Smith (2003-05-02 03:35:11)
Difficulty: 3 of 5Under Pumpkins (in Just Math)
Posted on 2003-05-01 (16 Comments)
re: by Brian Smith (2003-05-05 04:48:49)
Solution by Brian Smith (2003-05-01 09:05:07)
Difficulty: 3 of 5Under 3 colors (in Shapes)
Posted on 2003-05-01 (27 Comments)
re(2): Proof by contradiction by Brian Smith (2003-05-07 03:40:58)
Solution Proof by contradiction by Brian Smith (2003-05-01 08:37:44)
re: Could be right by Brian Smith (2003-05-01 04:54:27)
Difficulty: 3 of 5Under The Three Friends (in Riddles)
Posted on 2003-04-29 (27 Comments)
Guesses for two and three by Brian Smith (2003-04-29 09:23:14)
Difficulty: 4 of 5Under Ratio of Volumes (in Just Math)
Posted on 2003-04-25 (5 Comments)
solution by Brian Smith (2003-04-28 06:25:58)
Difficulty: 3 of 5Under Cool sequence 1 (in Sequences)
Posted on 2003-04-24 (8 Comments)
This sequence is super..... by Brian Smith (2003-04-30 07:42:28)
Difficulty: 4 of 5Under Who Ordered the Pi? (in Word Problems)
Posted on 2003-04-21 (11 Comments)
The 5th degree vs. The interrupted sequence by Brian Smith (2003-04-21 05:52:35)
Difficulty: 4 of 5Under Paradox or a Riddle (in Famous Riddles)
Posted on 2003-04-18 (29 Comments)
Solution Two Solutions by Brian Smith (2003-04-18 05:10:13)
Difficulty: 3 of 5Under Make the least of these digits (in Numbers)
Posted on 2003-04-13 (67 Comments)
re: A small idea, an even smaller number by Brian Smith (2003-04-25 05:43:06)
A small idea, an even smaller number by Brian Smith (2003-04-25 05:40:38)
Difficulty: 3 of 5Under Gasoline Problem (in Weights and Scales)
Posted on 2003-04-11 (36 Comments)
12, 14 but no 13 by Brian Smith (2003-04-14 04:27:28)
Difficulty: 2 of 5Under Strawberries! (in Logic)
Posted on 2003-04-10 (18 Comments)
Solution by Brian Smith (2003-04-10 08:21:48)
Difficulty: 2 of 5Under Envelopes (in Logic)
Posted on 2003-04-10 (37 Comments)
Solution Solution without using case-by-case analysis by Brian Smith (2017-01-02 14:03:56)
Difficulty: 5 of 5Under a2o3t6t7 (in Cryptography)
Posted on 2003-04-09 (13 Comments)
Solution Cs and Qs: Different answer by Brian Smith (2003-04-15 08:17:37)
Difficulty: 3 of 5Under What came first? (in Sequences)
Posted on 2002-12-04 (12 Comments)
Factorial fun by Brian Smith (2003-04-30 07:35:15)
Difficulty: 4 of 5Under Zero to 150 in 2003 (in Numbers)
Posted on 2002-11-29 (65 Comments)
re: ehm.. by Brian Smith (2003-04-25 04:48:01)
Solution Using trig functions: Zero to 150 completed by Brian Smith (2003-04-24 06:15:39)
function f(x) = x+1 by Brian Smith (2003-04-15 04:22:56)
Difficulty: 2 of 5Under In the Act (in General)
Posted on 2002-11-25 (15 Comments)
Good one! by Brian Smith (2003-05-02 04:39:43)
Difficulty: 4 of 5Under Niners (in Numbers)
Posted on 2002-10-23 (15 Comments)
Solution Here is my proof by Brian Smith (2003-05-08 06:26:33)
Difficulty: 2 of 5Under Cops and Robbers (in Riddles)
Posted on 2002-08-17 (19 Comments)
re: easy by Brian Smith (2003-09-24 15:25:19)
Difficulty: 5 of 5Under Grid Pathways (in Shapes)
Posted on 2002-07-22 (29 Comments)
Solution Solution by Brian Smith (2003-12-02 12:03:59)
re: One Equation - equation in int and mod by Brian Smith (2003-04-29 09:11:22)
3 x n by Brian Smith (2003-04-22 06:20:52)
Some Thoughts Upper bound formula by Brian Smith (2003-04-15 05:25:06)
Difficulty: 3 of 5Under Maximum Value (in Calculus)
Posted on 2002-06-19 (18 Comments)
Solution Solution: Part 3 by Brian Smith (2003-09-04 12:01:53)
Solution Solution: Part 2 by Brian Smith (2003-09-04 11:46:19)
Solution Solution: Part 1 by Brian Smith (2003-09-04 11:15:27)
Some Thoughts re: Most of a solution - Solution confimed. by Brian Smith (2003-04-28 04:13:15)
re(2): Most of a solution by Brian Smith (2003-04-09 05:29:11)
Some Thoughts Most of a solution by Brian Smith (2003-04-08 09:59:54)
Difficulty: 3 of 5Under Class act (in Numbers)
Posted on 2002-05-02 (15 Comments)
Really not that hard by Brian Smith (2003-05-15 04:42:49)
Difficulty: 2 of 5Under Four people on a bridge. (in General)
Posted on 2002-04-14 (14 Comments)
re: Not that long - Too slow by Brian Smith (2003-10-15 09:44:25)
Difficulty: 2 of 5Under Make four equilateral triangles (in Shapes)
Posted on 2002-03-28 (9 Comments)
re: another way? by Brian Smith (2003-10-27 10:51:08)
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