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Comment Search results for posted by Richard :
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Difficulty: 4 of 5Under Self-limited sequence (in Sequences)
Posted on 2006-12-14 (3 Comments)
Observation by Richard (2006-12-14 14:57:19)
Difficulty: 3 of 5Under Perpetual Primes Production? (in Numbers)
Posted on 2006-11-29 (12 Comments)
re: I would take that bet by Richard (2006-11-29 21:28:19)
re(2): One Approach (Spoiler?) by Richard (2006-11-29 14:30:37)
One Approach (Spoiler?) by Richard (2006-11-29 12:17:45)
Difficulty: 2 of 5Under Another positive integer puzzle (in Numbers)
Posted on 2006-11-29 (2 Comments)
D2? by Richard (2006-11-29 21:32:47)
Difficulty: 3 of 5Under Another function problem (in Numbers)
Posted on 2006-11-19 (12 Comments)
re(7): Solution? by Richard (2006-11-19 20:40:39)
re(5): Solution? by Richard (2006-11-19 18:02:36)
re(3): Solution? by Richard (2006-11-19 12:40:29)
re: Solution? by Richard (2006-11-19 12:01:06)
Difficulty: 4 of 5Under The Fix Is In (in Just Math)
Posted on 2006-11-17 (12 Comments)
re(5): No Subject by Richard (2006-11-18 01:55:42)
re(3): No Subject by Richard (2006-11-17 21:35:44)
re: No Subject by Richard (2006-11-17 19:58:09)
re: Solution by Richard (2006-11-17 16:45:58)
Difficulty: 1 of 5Under Consecutive Odd and Prime (in Numbers)
Posted on 2006-11-08 (4 Comments)
re: Trivial by Richard (2006-11-08 23:21:22)
Difficulty: 4 of 5Under Some other kind of root extraction (in Calculus)
Posted on 2006-11-07 (9 Comments)
re: Curious by Richard (2006-11-09 18:15:56)
Any n, one c by Richard (2006-11-08 23:48:05)
Difficulty: 4 of 5Under 'Impossible' Solid's Volume (in Shapes)
Posted on 2006-11-04 (11 Comments)
re: Checking my solution by Richard (2006-11-05 01:03:20)
Difficulty: 1 of 5Under Travelling (in Just Math)
Posted on 2006-10-30 (11 Comments)
re: Here's the solution by Richard (2006-10-31 11:58:54)
Harmonic Mean by Richard (2006-10-30 14:10:12)
Difficulty: 3 of 5Under Harmonic mean (in Just Math)
Posted on 2006-10-25 (4 Comments)
Seeing Why GM <= AM by Richard (2006-10-29 03:40:20)
Difficulty: 5 of 5Under Super-smooth hump (in Calculus)
Posted on 2006-10-24 (9 Comments)
re: Entirely different solution by Richard (2006-10-31 11:39:19)
re(2): My Way by Richard (2006-10-25 23:54:37)
My Way by Richard (2006-10-25 19:29:38)
re: Solution by Richard (2006-10-24 18:28:32)
Difficulty: 3 of 5Under Looking for functions II (in Just Math)
Posted on 2006-10-23 (4 Comments)
re: Method (only) by Richard (2006-10-23 17:22:49)
Answer (only) by Richard (2006-10-23 14:26:34)
Difficulty: 3 of 5Under Tree planting exercise (in Geometry)
Posted on 2006-10-21 (10 Comments)
re(3): 9 rows, 9 trees by Richard (2006-10-23 19:59:15)
re: 9 rows, 9 trees by Richard (2006-10-23 14:51:35)
Difficulty: 2 of 5Under Integer Roots (in Just Math)
Posted on 2006-10-14 (5 Comments)
re: Some thoughts by Richard (2006-10-14 22:04:37)
Answer mostly by brute force by Richard (2006-10-14 20:33:28)
Difficulty: 4 of 5Under Optimizing The Train (in Just Math)
Posted on 2006-10-04 (1 Comments)
Hints/Tips Hints by Richard (2006-10-07 20:16:51)
Difficulty: 2 of 5Under Those infinite small steps (in Just Math)
Posted on 2006-10-03 (8 Comments)
Visual calculus by Richard (2006-10-03 11:23:53)
Difficulty: 3 of 5Under Repeating decimals (in Numbers)
Posted on 2006-09-25 (11 Comments)
re(6): General solution by Richard (2006-09-27 15:52:05)
re(4): General solution by Richard (2006-09-26 23:07:48)
Difficulty: 3 of 5Under Life is full of me! (in Famous Riddles)
Posted on 2006-09-07 (18 Comments)
re: Possible Solution by Richard (2006-09-08 12:10:44)
Difficulty: 3 of 5Under Cutting planes with polygons (in Shapes)
Posted on 2006-09-06 (16 Comments)
re: an equation by Richard (2006-09-06 15:54:49)
Difficulty: 3 of 5Under These are no fractions, are they? (in Numbers)
Posted on 2006-09-05 (15 Comments)
re(3): proof for a by Richard (2006-09-08 12:12:31)
re: proof for a by Richard (2006-09-07 12:32:12)
re(3): One down, two to go by Richard (2006-09-06 03:06:52)
Difficulty: 3 of 5Under divisible by 11? (in Numbers)
Posted on 2006-09-04 (17 Comments)
re(7): Replace '10' by n by Richard (2006-09-06 02:55:58)
re(5): Replace '10' by n by Richard (2006-09-05 01:24:36)
re(3): Replace '10' by n by Richard (2006-09-04 20:21:48)
re: Replace '10' by n by Richard (2006-09-04 16:17:22)
re: almost solution by Richard (2006-09-04 13:25:54)
Insufficient, but a start by Richard (2006-09-04 11:14:29)
Difficulty: 2 of 5Under A Power Problem (in Calculus)
Posted on 2006-09-03 (3 Comments)
re: Method by Richard (2006-09-03 12:13:16)
Difficulty: 4 of 5Under Evil powers (in Numbers)
Posted on 2006-08-31 (8 Comments)
re: solution by Richard (2006-08-31 15:05:06)
Difficulty: 2 of 5Under Six numbers and a prime (in Numbers)
Posted on 2006-08-29 (23 Comments)
re: proof2 by Richard (2006-08-30 18:53:18)
re(2): One Actually Prime? by Richard (2006-08-30 01:58:18)
Question One Actually Prime? by Richard (2006-08-30 00:26:28)
re: Proof by Richard (2006-08-29 19:29:21)
Difficulty: 4 of 5Under Can you find this kind of function? (in Tricks)
Posted on 2006-08-28 (10 Comments)
It All Depends On ... by Richard (2006-08-30 14:33:14)
Difficulty: 2 of 5Under Five Circle Division (in Geometry)
Posted on 2006-08-26 (15 Comments)
re(3): Equation spoiler by Richard (2006-08-26 18:08:21)
re: new question by Richard (2006-08-26 17:58:00)
re(3): Equation spoiler by Richard (2006-08-26 13:20:10)
re: Equation spoiler by Richard (2006-08-26 11:52:00)
Difficulty: 4 of 5Under Spacy colors (in Just Math)
Posted on 2006-08-25 (10 Comments)
re: Solution (Some details required) by Richard (2006-08-27 16:06:19)
Difficulty: 3 of 5Under Are all complex numbers real? (in Paradoxes)
Posted on 2006-08-24 (14 Comments)
re(2): The Specific Problem (fleshed out a bit more) by Richard (2006-08-27 17:42:25)
re(2): The Specific Problem (fleshed out a bit more) by Richard (2006-08-26 22:45:33)
Solution The Specific Problem by Richard (2006-08-25 22:33:15)
re(2): The General Problem by Richard (2006-08-24 17:32:19)
Hints/Tips The General Problem by Richard (2006-08-24 15:54:55)
Difficulty: 2 of 5Under probability of X's (in Probability)
Posted on 2006-08-23 (1 Comments)
Answers - No Peeking by Richard (2006-08-23 16:21:51)
Difficulty: 5 of 5Under Sort of a sorting problem (in Just Math)
Posted on 2006-08-22 (14 Comments)
re(2): Still in Deep Water by Richard (2006-08-24 02:24:49)
re: Still in Deep Water, cont. by Richard (2006-08-24 01:46:10)
Still in Deep Water by Richard (2006-08-23 18:28:02)
Some Thoughts Some Thoughts by Richard (2006-08-23 17:00:17)
Difficulty: 2 of 5Under A FIRST and SECOND Problem (in Numbers)
Posted on 2006-08-22 (5 Comments)
re: An idea, with no computer by Richard (2006-08-22 15:38:09)
Difficulty: 1 of 5Under Millenium problem (in Numbers)
Posted on 2006-08-21 (14 Comments)
re(2): -10 for grammar by Richard (2006-08-23 14:39:35)
-10 for spelling by Richard (2006-08-22 21:38:50)
Difficulty: 2 of 5Under How to save yourself (in Logic)
Posted on 2006-08-20 (18 Comments)
re: Another approach by Richard (2006-08-20 22:45:18)
Difficulty: 3 of 5Under LCM Sequence (in Sequences)
Posted on 2006-08-19 (7 Comments)
re(4): Just a guess... -- proof by Richard (2006-08-19 21:54:57)
re(2): Just a guess... -- proof by Richard (2006-08-19 18:18:09)
Difficulty: 3 of 5Under Points on a plane (in Geometry)
Posted on 2006-08-18 (5 Comments)
re: How Leonhard would solve it by Richard (2006-08-18 19:41:30)
Difficulty: 3 of 5Under Must you overanalyze everything? (in Sequences)
Posted on 2006-08-18 (4 Comments)
re: Solution by Richard (2006-08-18 13:12:08)
Difficulty: 2 of 5Under A Real Number problem (in Just Math)
Posted on 2006-08-16 (9 Comments)
re(3): go graphical by Richard (2006-08-17 22:58:24)
re: go graphical by Richard (2006-08-17 00:33:03)
Difficulty: 2 of 5Under Procrastination (in Riddles)
Posted on 2006-08-16 (48 Comments)
Little Annie sings by Richard (2006-08-17 17:02:50)
Difficulty: 4 of 5Under Jargon? (in Cryptography)
Posted on 2006-08-15 (9 Comments)
re: No Subject by Richard (2006-08-15 15:18:11)
Difficulty: 3 of 5Under A Definite Integral Problem (in Calculus)
Posted on 2006-08-10 (5 Comments)
re: question by Richard (2006-08-10 20:03:22)
Confirmation by Richard (2006-08-10 14:31:28)
Difficulty: 1 of 5Under Medieval King (in Riddles)
Posted on 2006-08-10 (13 Comments)
re: Biiiiiiig hint by Richard (2006-08-10 15:24:24)
Difficulty: 3 of 5Under So how small is it then? (in Numbers)
Posted on 2006-08-09 (14 Comments)
re(3): How about we try this a different way. by Richard (2006-08-10 14:40:13)
re: First thoughts (spoiler) -- Could be wrong by Richard (2006-08-09 13:01:30)
Difficulty: 3 of 5Under A Remainder Problem (in Just Math)
Posted on 2006-08-08 (5 Comments)
1 to 9 to the x by Richard (2006-08-09 21:01:36)
Not Any Real Spoiler by Richard (2006-08-08 13:44:13)
Difficulty: 4 of 5Under A prime factorization problem (in Calculus)
Posted on 2006-08-07 (1 Comments)
Solution Spoiler by Richard (2006-08-07 13:45:55)
Difficulty: 1 of 5Under Vital Vegetal Vibes (in General)
Posted on 2006-08-07 (11 Comments)
re: Spoiler.... Solution by Richard (2006-08-07 12:44:33)
Difficulty: 3 of 5Under Sign of a Permutation (in Algorithms)
Posted on 2006-08-05 (11 Comments)
re(2): What I would NOT advocate by Richard (2006-08-07 16:31:55)
re(3): No Subject by Richard (2006-08-07 14:14:05)
re: No Subject by Richard (2006-08-07 12:57:18)
What I would NOT advocate by Richard (2006-08-05 23:05:50)
Difficulty: 3 of 5Under A Multi-solution Puzzle (in Just Math)
Posted on 2006-08-03 (3 Comments)
re: what mathematica has to say by Richard (2006-08-03 19:14:50)
Some answers w/o derivations by Richard (2006-08-03 16:41:51)
Difficulty: 1 of 5Under Inequality (in Calculus)
Posted on 2006-08-03 (3 Comments)
Visual Integral Calculus by Richard (2006-08-03 21:04:08)
Difficulty: 3 of 5Under Alphabetical logic (in Logic)
Posted on 2006-07-28 (9 Comments)
re: Solution by Richard (2006-07-29 01:36:51)
Difficulty: 3 of 5Under A 2006 Problem (in Numbers)
Posted on 2006-07-27 (8 Comments)
re: A solution by Richard (2006-07-28 00:14:36)
Advice (Read only if you are really stuck) by Richard (2006-07-27 13:54:30)
Difficulty: 4 of 5Under Square-Crossed Power (in Just Math)
Posted on 2006-07-23 (11 Comments)
re: computer solution (spoiler) by Richard (2006-07-23 13:42:14)
Difficulty: 3 of 5Under Cube first, or square second (in Numbers)
Posted on 2006-07-22 (7 Comments)
re(3): Solution by Richard (2006-07-23 04:00:33)
re: Solution by Richard (2006-07-22 22:09:57)
Difficulty: 2 of 5Under A Cute Triangle (in Geometry)
Posted on 2006-07-21 (4 Comments)
re: Solution by Richard (2006-07-21 14:38:53)
Difficulty: 3 of 5Under Ambidextrous Cancellation Mission (in Just Math)
Posted on 2006-07-20 (20 Comments)
re(3): Counter example for Monoids by Richard (2006-08-15 20:39:25)
re(4): Counter example for Monoids by Richard (2006-08-10 19:53:03)
re(3): Counter example for Monoids by Richard (2006-08-07 18:07:12)
re: Counter example for Monoids by Richard (2006-08-06 17:32:47)
Difficulty: 3 of 5Under A Printing Machine Problem (in Probability)
Posted on 2006-07-19 (4 Comments)
My Printer is Better by Richard (2006-07-19 13:36:08)
Difficulty: 3 of 5Under Polyhedra construction (in Shapes)
Posted on 2006-07-17 (4 Comments)
A Reference by Richard (2006-07-18 12:35:02)
Difficulty: 4 of 5Under Two Digit Integers (in Just Math)
Posted on 2006-07-14 (11 Comments)
Some Analysis by Richard (2006-07-21 04:05:40)
re(2): Solution by Richard (2006-07-18 23:06:36)
A Program Helps Here (Numerical Spoiler) by Richard (2006-07-14 13:10:55)
Difficulty: 2 of 5Under When Is It Today? (in General)
Posted on 2006-07-11 (14 Comments)
re(4): A Reference by Richard (2006-07-13 16:41:55)
re(2): A Reference by Richard (2006-07-13 12:49:59)
A Reference by Richard (2006-07-12 19:08:52)
re(5): first and second part (Spoiler) with ? on 3rd by Richard (2006-07-12 18:35:34)
re(3): first and second part (Spoiler) with ? on 3rd by Richard (2006-07-12 13:23:09)
re: first part by Richard (2006-07-12 01:07:55)
re: first and second part (Spoiler) with ? on 3rd by Richard (2006-07-12 01:03:12)
Difficulty: 3 of 5Under Angle Measures (in Geometry)
Posted on 2006-07-05 (4 Comments)
re: An almost complete estimated solution (spoiler) by Richard (2006-07-06 17:12:09)
Using a Formula by Richard (2006-07-05 22:00:40)
Difficulty: 3 of 5Under Calling all pythagoreans (in Geometry)
Posted on 2006-07-03 (7 Comments)
re: Interesting dialog by Richard (2006-07-03 23:14:48)
Difficulty: 2 of 5Under A Digital Root Problem (in Just Math)
Posted on 2006-06-29 (10 Comments)
re: Difficulty by Richard (2006-06-29 19:37:36)
re: Answer by Richard (2006-06-29 15:08:04)
Difficulty: 3 of 5Under Oooh... a dirty one... (in Riddles)
Posted on 2006-06-26 (10 Comments)
Similar by Richard (2006-06-26 12:06:28)
Difficulty: 3 of 5Under Integer Triangles (in Geometry)
Posted on 2006-06-21 (5 Comments)
integer sides and inradius by Richard (2006-06-22 20:32:09)
re: four more -- computer used by Richard (2006-06-21 19:44:27)
One by Richard (2006-06-21 14:27:13)
Difficulty: 3 of 5Under Three Intercepts (in Just Math)
Posted on 2006-06-19 (7 Comments)
Another Try by Richard (2006-06-20 16:13:53)
re(2): The Old Kitchen Sink by Richard (2006-06-20 15:34:43)
The Old Kitchen Sink by Richard (2006-06-19 22:35:30)
Difficulty: 2 of 5Under Coin through a hole (in Shapes)
Posted on 2006-05-29 (24 Comments)
re(5): My 2 cents worth by Richard (2006-05-30 15:37:04)
re(4): My 2 cents worth by Richard (2006-05-30 15:25:47)
re(2): My 2 cents worth by Richard (2006-05-29 19:46:06)
My 2 cents worth by Richard (2006-05-29 15:21:32)
Difficulty: 3 of 5Under Polynomial # 1 (in Just Math)
Posted on 2006-05-26 (7 Comments)
re: Solution (spoiler) by Richard (2006-05-26 23:12:04)
re: Solution (spoiler) by Richard (2006-05-26 15:03:58)
Difficulty: 4 of 5Under An Inverse Evaluation (in Calculus)
Posted on 2006-05-25 (6 Comments)
re(2): Maybe the way? yes it is! by Richard (2006-05-30 16:31:06)
Difficulty: 3 of 5Under Least L.C.M. (in Just Math)
Posted on 2006-05-19 (5 Comments)
Up the Ante by Richard (2006-05-19 13:05:39)
Difficulty: 3 of 5Under Find the value of ...... (in Just Math)
Posted on 2006-05-14 (6 Comments)
re: Solution by Richard (2006-05-14 20:11:58)
Difficulty: 3 of 5Under Repeated Root Research (in Calculus)
Posted on 2006-05-08 (6 Comments)
re: Complex not possible by Richard (2006-05-09 14:16:26)
re: A most general solution by Richard (2006-05-08 16:38:38)
No Subject by Richard (2006-05-08 13:08:49)
Difficulty: 4 of 5Under Perfect Square (in Just Math)
Posted on 2006-05-07 (2 Comments)
Solution Straightforward Method by Richard (2006-05-07 16:41:37)
Difficulty: 4 of 5Under String Theory (in Riddles)
Posted on 2006-05-06 (25 Comments)
re: An answer by Richard (2006-05-06 16:00:42)
Difficulty: 4 of 5Under Tidy Triangle (in Shapes)
Posted on 2006-05-05 (7 Comments)
Oops! by Richard (2006-05-19 13:40:44)
re(3): If not different by Richard (2006-05-06 15:35:58)
re(2): If not different by Richard (2006-05-05 22:18:19)
Difficulty: 3 of 5Under Gravity experiment (in General)
Posted on 2006-05-04 (29 Comments)
re(3): Question by Richard (2006-05-08 20:38:03)
re: Question by Richard (2006-05-07 12:17:24)
re(2): Scale It Down by Richard (2006-05-06 12:48:13)
Scale It Down by Richard (2006-05-05 23:50:38)
A Scheme That Works by Richard (2006-05-05 00:15:57)
Difficulty: 1 of 5Under Square = half itself? (in Shapes)
Posted on 2006-05-04 (19 Comments)
re(2): Solution by Richard (2006-05-16 15:55:33)
Difficulty: 2 of 5Under 35, 70, 105, 140... (in Numbers)
Posted on 2006-05-03 (8 Comments)
Long Division Method by Richard (2006-05-03 13:57:42)
Difficulty: 3 of 5Under Look Ma, no integrals! (in Calculus)
Posted on 2006-05-02 (14 Comments)
Combined Approach by Richard (2006-05-02 20:01:41)
re(3): My (cryptic, mysterious, sibylline) Way by Richard (2006-05-02 17:16:01)
re: My (cryptic, mysterious, sibylline) Way by Richard (2006-05-02 16:06:36)
re: Stupidity Tries by Richard (2006-05-02 15:57:50)
re(2): Observations and maybe solution by Richard (2006-05-02 15:52:45)
Observations and maybe solution by Richard (2006-05-02 14:08:20)
Difficulty: 1 of 5Under My name... (in Famous Riddles)
Posted on 2006-04-28 (32 Comments)
re: From classical literature... by Richard (2006-04-28 19:54:33)
Difficulty: 2 of 5Under Complex Reflection (in Geometry)
Posted on 2006-04-19 (3 Comments)
re: Solution Correction by Richard (2006-04-28 14:05:16)
Answer & some justification by Richard (2006-04-19 20:30:49)
Difficulty: 4 of 5Under Remainders (in Numbers)
Posted on 2006-04-15 (3 Comments)
re: computer solution by Richard (2006-04-16 16:02:32)
Part 1 by Richard (2006-04-15 15:27:53)
Difficulty: 2 of 5Under That's a lotta numbers! (in Numbers)
Posted on 2006-04-14 (10 Comments)
Solution Another Viewpoint by Richard (2006-04-14 15:57:23)
Difficulty: 3 of 5Under Alexei And Boris (in Numbers)
Posted on 2006-03-28 (11 Comments)
re(3): Solution by Richard (2006-03-28 17:26:03)
re: Solution by Richard (2006-03-28 15:23:07)
Difficulty: 3 of 5Under Dominoes (in Logic)
Posted on 2006-03-24 (6 Comments)
Picture of Domino Set by Richard (2006-03-24 19:02:02)
Difficulty: 3 of 5Under 3 age problems (in Just Math)
Posted on 2006-03-24 (5 Comments)
re(2): solution by Richard (2006-03-24 13:53:10)
Difficulty: 3 of 5Under Sequence - 4 (in Sequences)
Posted on 2006-03-23 (4 Comments)
Number of terms by Richard (2006-03-23 13:25:20)
Difficulty: 3 of 5Under In the Woods... (in Riddles)
Posted on 2006-03-22 (50 Comments)
A Similar Thought by Richard (2006-03-22 12:39:29)
Difficulty: 3 of 5Under Remainder: Part 1 (in Numbers)
Posted on 2006-03-20 (6 Comments)
re: computer solution for all (spoiler) by Richard (2006-03-20 15:31:52)
Difficulty: 3 of 5Under Do not divide! (in Just Math)
Posted on 2006-03-18 (7 Comments)
re(2): Possible indeed (solution to part (1)) by Richard (2006-03-18 14:54:33)
re: Possible by Richard (2006-03-18 12:56:29)
Difficulty: 4 of 5Under Sum to Infinity - 1 (in Sequences)
Posted on 2006-03-11 (12 Comments)
re(3): Solution by Richard (2006-03-11 14:03:16)
re: Solution by Richard (2006-03-11 13:24:26)
re(2): solution --- seems to be wrong by Richard (2006-03-11 13:03:38)
Difficulty: 3 of 5Under Factorial Sequence II (in Just Math)
Posted on 2006-03-10 (3 Comments)
re: computer solution by Richard (2006-03-10 13:51:51)
Difficulty: 3 of 5Under What force (in Riddles)
Posted on 2006-03-05 (31 Comments)
re: Andre's Solution by Richard (2006-03-05 12:26:17)
Difficulty: 3 of 5Under Only one colour (in Riddles)
Posted on 2006-03-03 (34 Comments)
re: Attack of the toe! by Richard (2006-03-05 02:33:12)
re: probably not the right answer, but silly by Richard (2006-03-04 17:30:38)
Difficulty: 3 of 5Under Work Safety (in Riddles)
Posted on 2006-03-02 (7 Comments)
re(2): Solution? by Richard (2006-03-02 16:05:29)
Difficulty: 3 of 5Under Devils in my stomach (in Cryptography)
Posted on 2006-02-26 (17 Comments)
Solution by Richard (2006-03-02 17:42:10)
Difficulty: 3 of 5Under Angle ABC (in Geometry)
Posted on 2006-02-25 (13 Comments)
re(3): An algebraic solution by Richard (2006-02-26 14:04:15)
re: alternative aproach by Richard (2006-02-26 12:43:51)
re: An algebraic solution by Richard (2006-02-26 04:56:02)
No Subject by Richard (2006-02-25 18:08:42)
Difficulty: 1 of 5Under Levik's Ride (in Word Problems)
Posted on 2006-02-22 (26 Comments)
re: Help by Richard (2006-05-26 17:06:28)
re: Shoe-maker by Richard (2006-02-25 15:47:21)
re: Links by Richard (2006-02-24 12:58:44)
Penny's Ride by Richard (2006-02-24 00:53:56)
re: A Good Reference by Richard (2006-02-24 00:15:03)
re(4): Another reason by Richard (2006-02-23 15:36:40)
re(2): Another reason by Richard (2006-02-23 13:48:39)
re: Mary K-1 Abrams by Richard (2006-02-23 02:14:20)
re: I Know I Know by Richard (2006-02-22 23:35:24)
Difficulty: 1 of 5Under Harmonic Integers Revisited (in Just Math)
Posted on 2006-02-21 (3 Comments)
Solution One Approach by Richard (2006-02-21 11:22:39)
Difficulty: 3 of 5Under Hide and destroy (in Probability)
Posted on 2006-02-15 (13 Comments)
re(3): Clarification, if you're lost by Richard (2006-02-16 19:19:23)
Not a valid solution? by Richard (2006-02-16 15:41:42)
Some Thoughts What constitutes an answer here? by Richard (2006-02-15 17:18:41)
Difficulty: 3 of 5Under Spotty editing (in Probability)
Posted on 2006-02-14 (13 Comments)
Calculated Guess by Richard (2006-02-14 14:40:29)
Difficulty: 3 of 5Under My embrace (in Riddles)
Posted on 2006-02-12 (39 Comments)
re(2): Another guess by Richard (2006-02-13 02:25:30)
Difficulty: 1 of 5Under Three in a Row (in Word Problems)
Posted on 2006-02-09 (10 Comments)
Pooor Reference by Richard (2006-02-09 14:53:04)
re: Now I Know (Spoiler) by Richard (2006-02-09 13:01:22)
Difficulty: 3 of 5Under Harmonic Integers (in Just Math)
Posted on 2006-02-07 (5 Comments)
re(3): I think I have it by Richard (2006-02-08 13:39:51)
Difficulty: 2 of 5Under Minus one (in Cryptography)
Posted on 2006-02-05 (15 Comments)
re: Another uneducated guess by Richard (2006-02-06 08:27:53)
Difficulty: 4 of 5Under Square of Triangles (in Shapes)
Posted on 2006-02-04 (21 Comments)
re: Even by Richard (2006-02-05 15:51:05)
re(7): Part I - notation by Richard (2006-02-05 14:17:38)
re(7): Part I - notation by Richard (2006-02-05 10:27:10)
re(2): Equal area, congruent triangles. by Richard (2006-02-04 22:58:56)
re(5): Part I - notation by Richard (2006-02-04 22:51:18)
re(3): Part I - notation by Richard (2006-02-04 19:43:49)
Difficulty: 3 of 5Under Trisected Triangle (in Just Math)
Posted on 2006-02-03 (12 Comments)
re(3): Solution by Richard (2006-02-03 22:15:48)
re: Solution by Richard (2006-02-03 18:55:52)
Solution Simplify by Going Complex by Richard (2006-02-03 17:45:59)
Difficulty: 2 of 5Under A Capital Idea! (in Sequences)
Posted on 2006-01-24 (12 Comments)
re(3): Answer (Spolier) by Richard (2006-01-24 16:49:10)
re: Answer (Spolier) by Richard (2006-01-24 14:46:00)
Difficulty: 1 of 5Under In a field (in Word Problems)
Posted on 2006-01-23 (20 Comments)
A Possibility? by Richard (2006-01-23 15:41:02)
Difficulty: 2 of 5Under Match The Years (in General)
Posted on 2006-01-22 (16 Comments)
re(3): Analytical solution by Richard (2006-01-23 15:35:15)
Another Computer Program Solution by Richard (2006-01-22 19:28:32)
re: Analytical solution by Richard (2006-01-22 16:08:07)
Difficulty: 4 of 5Under D on its side (in Shapes)
Posted on 2006-01-16 (13 Comments)
Some Thoughts Friction? by Richard (2006-01-16 20:23:33)
re: Not really helpfull first thoughts by Richard (2006-01-16 19:40:09)
Difficulty: 2 of 5Under An equation with consecutive primes (in Just Math)
Posted on 2006-01-16 (23 Comments)
re(3): For those who wanna try by Richard (2006-01-16 23:36:45)
Difficulty: 2 of 5Under Triangle Donut (in Shapes)
Posted on 2006-01-01 (14 Comments)
re(2): My interpretation by Richard (2006-01-01 15:52:46)
Difficulty: 2 of 5Under Standing for higher powers (in Riddles)
Posted on 2005-12-31 (28 Comments)
re(2): soultion by Richard (2006-01-02 12:35:57)
Probably Not by Richard (2005-12-31 17:20:02)
Difficulty: 3 of 5Under All things being fair. (in Calculus)
Posted on 2005-12-30 (5 Comments)
re(3): solution by Richard (2005-12-30 17:00:34)
re: solution by Richard (2005-12-30 16:05:09)
Solution Solution by Richard (2005-12-30 12:49:07)
Difficulty: 2 of 5Under All the months of the year (in General)
Posted on 2005-12-27 (4 Comments)
re: Solution by Richard (2005-12-28 00:59:25)
Difficulty: 3 of 5Under The Longest Drive (in Science)
Posted on 2005-12-26 (16 Comments)
One Opinion by Richard (2005-12-26 14:00:42)
Difficulty: 4 of 5Under Entangled code (in Cryptography)
Posted on 2005-12-25 (21 Comments)
re: small hint by Richard (2005-12-26 17:09:43)
Difficulty: 3 of 5Under End of the Rainbow (in Riddles)
Posted on 2005-12-24 (24 Comments)
Extra Credit Question by Richard (2006-01-01 13:36:13)
A Good Reference by Richard (2005-12-31 00:19:40)
A Cheating Hint by Richard (2005-12-30 16:40:18)
Difficulty: 5 of 5Under Unknown Polynomials (in Just Math)
Posted on 2005-12-23 (5 Comments)
re: Solution by Richard (2005-12-23 23:23:35)
re: Solution by Richard (2005-12-23 19:57:17)
Difficulty: 3 of 5Under No trigonometry, no algebra (in Geometry)
Posted on 2005-12-23 (10 Comments)
re: only geometry? by Richard (2005-12-23 13:47:41)
Difficulty: 4 of 5Under A Quartic Problem (in Just Math)
Posted on 2005-12-22 (7 Comments)
"Research" Problem by Richard (2005-12-23 14:50:25)
re: Nothing elegant yet by Richard (2005-12-23 00:15:23)
Solving the Quartic (spoiler?) by Richard (2005-12-22 14:48:37)
Difficulty: 4 of 5Under Twisted regions (in General)
Posted on 2005-12-22 (9 Comments)
Interesting Link by Richard (2005-12-22 20:35:20)
re: My solution by Richard (2005-12-22 15:42:35)
re(2): One solution (link to solution). by Richard (2005-12-22 14:55:00)
Difficulty: 2 of 5Under Tame, yet wild (in Riddles)
Posted on 2005-12-20 (35 Comments)
Another Thought by Richard (2005-12-21 02:03:13)
Difficulty: 5 of 5Under A Self Intersecting Curve (in Calculus)
Posted on 2005-12-16 (9 Comments)
re: Numerical Integration Solution by Richard (2005-12-17 13:31:23)
Numerical Integration Solution by Richard (2005-12-17 02:44:28)
Question re(3): A solution; Not quite by Richard (2005-12-16 14:09:55)
Difficulty: 2 of 5Under Only briefly continuous (in Calculus)
Posted on 2005-12-15 (11 Comments)
re: Non-piecewise by Richard (2005-12-15 14:57:49)
See Also by Richard (2005-12-15 12:45:27)
Difficulty: 3 of 5Under The Law of Sines (in Geometry)
Posted on 2005-12-13 (4 Comments)
Nice Problem by Richard (2005-12-13 14:03:45)
Difficulty: 3 of 5Under Morphing words (in Word Problems)
Posted on 2005-12-09 (6 Comments)
re: Solution in 16 with proper noun by Richard (2005-12-09 14:49:39)
Difficulty: 4 of 5Under Another Man's Floor (in Algorithms)
Posted on 2005-11-23 (11 Comments)
re(4): Jump Start-typo? by Richard (2005-12-30 13:06:47)
re(2): Jump Start by Richard (2005-12-30 03:25:02)
Jump Start by Richard (2005-12-29 21:16:02)
Difficulty: 4 of 5Under Politically Correct Moduli (in Just Math)
Posted on 2005-09-03 (11 Comments)
re(6): Proof by Richard (2005-09-04 04:38:50)
re(4): Proof by Richard (2005-09-04 01:04:08)
re(2): Proof by Richard (2005-09-03 23:09:09)
re: I think the answer is... by Richard (2005-09-03 17:52:56)
Difficulty: 3 of 5Under ABSENT TONE (in Numbers)
Posted on 2005-09-02 (18 Comments)
re(6): Not a Solution by Richard (2005-09-04 08:50:22)
re(4): Not a Solution by Richard (2005-09-04 01:12:03)
re(2): Not a Solution by Richard (2005-09-03 22:49:48)
re(3): What is a TONE? by Richard (2005-09-03 04:41:05)
re: What is a TONE? by Richard (2005-09-02 21:11:29)
Difficulty: 3 of 5Under Rubber star (in Shapes)
Posted on 2005-09-02 (4 Comments)
re: 5 points, if you'd rather... by Richard (2005-09-03 18:06:37)
Difficulty: 3 of 5Under Sorta pythagoric... (in Numbers)
Posted on 2005-09-01 (16 Comments)
re: chipping away at the possibilities by Richard (2005-09-02 05:03:01)
re(2): Why?????????????? by Richard (2005-09-02 00:50:01)
Difficulty: 2 of 5Under Linked rings (in Shapes)
Posted on 2005-08-31 (8 Comments)
re: Solution by Richard (2005-08-31 07:35:02)
Difficulty: 3 of 5Under A Matter of Perspective (in Geometry)
Posted on 2005-08-27 (10 Comments)
re: My Way by Richard (2005-08-29 18:36:12)
My Way by Richard (2005-08-27 22:14:22)
Difficulty: 3 of 5Under Triangles and Rectangle (in Geometry)
Posted on 2005-08-21 (5 Comments)
re(2): Answer by Richard (2005-08-22 18:18:08)
Answer by Richard (2005-08-22 06:50:46)
Difficulty: 4 of 5Under The late eight sequences (in Sequences)
Posted on 2005-08-19 (16 Comments)
re: Havnt got a clue by Richard (2005-08-19 19:03:39)
Difficulty: 4 of 5Under All/Any different? (in Numbers)
Posted on 2005-08-16 (26 Comments)
re(3): Where's the proof? by Richard (2005-08-20 09:30:09)
Where's the proof? by Richard (2005-08-20 02:00:01)
Difficulty: 3 of 5Under Tackle These Three Tests (in General)
Posted on 2005-08-07 (7 Comments)
Question Albert? by Richard (2005-08-07 02:57:17)
Difficulty: 1 of 5Under Knot or Not? (in Probability)
Posted on 2005-08-04 (16 Comments)
re(2): As I figure it by Richard (2005-08-04 05:28:39)
Difficulty: 2 of 5Under Lively (in Riddles)
Posted on 2005-08-03 (41 Comments)
re: Aha! by Richard (2005-08-03 18:29:04)
Wild Guess by Richard (2005-08-03 05:05:49)
Difficulty: 3 of 5Under One is the sum of the other two (in Just Math)
Posted on 2005-07-31 (6 Comments)
Question ? by Richard (2005-07-31 05:06:34)
Difficulty: 3 of 5Under Two to the Tee (in Numbers)
Posted on 2005-07-29 (5 Comments)
re: the rest of the solution by Richard (2005-07-30 19:48:04)
U > 1 impossible by Richard (2005-07-29 20:56:26)
Small Observations by Richard (2005-07-29 18:56:52)
Difficulty: 2 of 5Under Only 3 lines? (in Geometry)
Posted on 2005-07-14 (12 Comments)
re: Solution by Richard (2005-07-15 02:51:47)
Another way by Richard (2005-07-14 20:45:56)
Difficulty: 3 of 5Under Any order will do (in Numbers)
Posted on 2005-07-12 (8 Comments)
re: Proof (spoiler) by Richard (2005-07-13 02:18:32)
re: thoughts by Richard (2005-07-12 17:15:22)
Difficulty: 3 of 5Under What's Going On? (in Numbers)
Posted on 2005-07-05 (4 Comments)
Solution (spoiler) by Richard (2005-07-06 00:51:33)
Difficulty: 3 of 5Under A digital arrangement (in Just Math)
Posted on 2005-06-30 (20 Comments)
Not a trick? by Richard (2005-06-30 22:36:04)
Difficulty: 3 of 5Under Unusual binary representation (in Numbers)
Posted on 2005-06-14 (9 Comments)
re(2): Negabinary by Richard (2005-06-15 01:48:53)
Negabinary by Richard (2005-06-14 21:54:24)
Difficulty: 3 of 5Under Perplexing Polynomial Puzzle (in Numbers)
Posted on 2005-06-13 (6 Comments)
Fine Problem by Richard (2005-06-14 22:01:28)
Difficulty: 3 of 5Under Dotty Right Triangle (in Numbers)
Posted on 2005-06-09 (6 Comments)
re(2): Solution by Richard (2005-06-14 22:05:26)
Difficulty: 4 of 5Under A repeating irrational number? (in Just Math)
Posted on 2005-06-06 (7 Comments)
re(3): I has to use a calculator a little. by Richard (2005-06-06 21:35:50)
re: I has to use a calculator a little. by Richard (2005-06-06 19:47:47)
Difficulty: 4 of 5Under An average table (in Just Math)
Posted on 2005-06-03 (10 Comments)
re: Solution by Richard (2005-06-03 21:56:55)
Difficulty: 3 of 5Under 2005 a square? Baseless! (in Just Math)
Posted on 2005-05-30 (17 Comments)
re(3): when the base is odd... by Richard (2005-05-30 23:37:47)
re: when the base is odd... by Richard (2005-05-30 22:05:55)
Difficulty: 3 of 5Under Britannia Rule The Waves!! (in Sequences)
Posted on 2005-05-27 (26 Comments)
re: Hei, Charleyyyyyyy.... by Richard (2005-06-05 09:08:39)
Difficulty: 4 of 5Under Narrow path through the Eternal Forest (in Geometry)
Posted on 2005-05-26 (8 Comments)
re: All done! by Richard (2005-05-27 19:31:05)
My Answer by Richard (2005-05-27 06:20:10)
Difficulty: 2 of 5Under Strange divisibility (in Just Math)
Posted on 2005-05-25 (27 Comments)
What is strange by Richard (2005-05-27 18:40:47)
re(2): Remove Problem by Richard (2005-05-27 00:56:25)
Difficulty: 4 of 5Under Leaf's Code (in Riddles)
Posted on 2005-05-24 (57 Comments)
re(2): I agree completely with Mark by Richard (2005-05-25 21:21:18)
re: I agree completely with Mark by Richard (2005-05-25 21:18:21)
re(2): Spoiler by Richard (2005-05-24 22:39:35)
Difficulty: 2 of 5Under Discriminants (in Numbers)
Posted on 2005-05-24 (7 Comments)
re: Four by Richard (2005-05-25 09:10:41)
re: Solution (no explanation given) by Richard (2005-05-24 22:47:51)
Difficulty: 2 of 5Under I am all around (in Riddles)
Posted on 2005-05-23 (102 Comments)
A little different slant by Richard (2005-05-25 03:07:58)
Difficulty: 2 of 5Under Snow Splash (in Shapes)
Posted on 2005-05-15 (8 Comments)
Inradius Again by Richard (2005-05-16 00:42:13)
Difficulty: 3 of 5Under Polynomials (in Just Math)
Posted on 2005-05-10 (6 Comments)
re: numerical answer, without explanation by Richard (2005-05-11 00:46:07)
Difficulty: 1 of 5Under A Man Without Eyes (in Famous Riddles)
Posted on 2005-05-10 (24 Comments)
re: not a good riddle by Richard (2005-08-31 03:30:01)
Difficulty: 5 of 5Under Four switches (in General)
Posted on 2005-05-09 (37 Comments)
2-Switch Lamp by Richard (2005-05-13 21:02:27)
Difficulty: 5 of 5Under Rational sine (in Just Math)
Posted on 2005-05-02 (7 Comments)
re: How many digits? by Richard (2005-05-05 04:15:08)
Difficulty: 4 of 5Under Just find two! (in Geometry)
Posted on 2005-04-27 (25 Comments)
re(2): May not be possible by Richard (2005-04-27 20:00:31)
Difficulty: 3 of 5Under 1000th digit (in Numbers)
Posted on 2005-04-26 (30 Comments)
re(2): Solution [FK's] by Richard (2005-04-28 18:26:07)
Difficulty: 3 of 5Under Unequally Unintegrally Yoked (in Calculus)
Posted on 2005-04-24 (8 Comments)
re(2): Solution & Spoiler by Richard (2005-04-24 21:48:56)
Some Thoughts re: Solution & Spoiler by Richard (2005-04-24 18:39:43)
Difficulty: 3 of 5Under Dividing a donut (in Shapes)
Posted on 2005-04-23 (34 Comments)
Another Reference by Richard (2005-04-26 09:06:46)
A Nice Reference by Richard (2005-04-26 01:05:07)
Difficulty: 3 of 5Under Ice Floating in Water (in Science)
Posted on 2005-04-21 (31 Comments)
Solution Solution Based on Densities by Richard (2005-04-21 20:48:30)
Difficulty: 4 of 5Under Sphere in Tetrahedron (in Shapes)
Posted on 2005-04-19 (7 Comments)
Solution Followup on Hint by Richard (2005-04-20 06:23:09)
Hint (partial spoiler) by Richard (2005-04-19 20:24:36)
Difficulty: 2 of 5Under This will go on for a while. (in Sequences)
Posted on 2005-04-15 (11 Comments)
Confused no more by Richard (2005-04-15 23:39:47)
Confused by Richard (2005-04-15 20:04:59)
Difficulty: 3 of 5Under It is infinite if it isn't? (in Paradoxes)
Posted on 2005-04-12 (35 Comments)
A Decent Reference by Richard (2005-04-14 01:08:33)
Definitions are tricky! by Richard (2005-04-12 23:28:06)
Difficulty: 1 of 5Under Animal + Plant (in Word Problems)
Posted on 2005-04-09 (16 Comments)
Hi Ho Silver by Richard (2005-04-09 20:59:06)
Some Thoughts Peep Peep by Richard (2005-04-09 18:28:14)
Difficulty: 3 of 5Under Essay Final (in General)
Posted on 2005-04-08 (8 Comments)
Alleged Answer (No Proof) by Richard (2005-04-09 08:41:19)
re: Solution by Richard (2005-04-09 00:55:11)
Difficulty: 3 of 5Under Roll the Die Higher (in Probability)
Posted on 2005-04-07 (13 Comments)
re: General Result by Richard (2005-04-08 19:11:26)
re(3): Solution w/o expl. and a question by Richard (2005-04-07 21:01:45)
re: Solution w/o expl. and a question by Richard (2005-04-07 20:45:51)
Difficulty: 3 of 5Under Shoelaces (in Probability)
Posted on 2005-04-05 (7 Comments)
re: Intuitive trash talk by Richard (2005-04-07 02:57:41)
re(2): Recursive definition by Richard (2005-04-05 23:41:53)
Difficulty: 3 of 5Under Cutting Contrives Conical Cup (in Shapes)
Posted on 2005-04-01 (17 Comments)
Area of Triangle vs. Volume of Cone by Richard (2005-04-02 04:04:32)
Another Try by Richard (2005-04-02 03:55:28)
re: Another Answer -- Wrong by Richard (2005-04-02 03:40:31)
Solution Another Answer by Richard (2005-04-02 02:39:17)
Difficulty: 4 of 5Under Cosines everywhere (in Geometry)
Posted on 2005-03-21 (6 Comments)
Advanced Calculus Problem by Richard (2005-03-23 22:55:31)
re: This problem needs some formatting changes... by Richard (2005-03-23 03:07:33)
Difficulty: 3 of 5Under Inspector Morse (in Cryptography)
Posted on 2005-03-20 (23 Comments)
re: A much less limited start by Richard (2005-03-25 19:32:25)
re(7): A (limited) start by Richard (2005-03-23 19:57:42)
re(5): A (limited) start by Richard (2005-03-23 17:25:52)
re(2): A (limited) start by Richard (2005-03-23 03:15:36)
Difficulty: 3 of 5Under Power inequality (in Just Math)
Posted on 2005-03-15 (18 Comments)
re(4): Can get close to 2 - what is missing ? by Richard (2005-03-28 03:45:01)
re(2): Can get close to 2 - what is missing ? by Richard (2005-03-27 20:45:15)
re(4): Can get close to 2 by Richard (2005-03-17 19:05:55)
Conjecture by Richard (2005-03-17 01:00:11)
Can get close to 2 by Richard (2005-03-16 20:47:26)
re: am I wrong ? by Richard (2005-03-16 00:16:08)
Difficulty: 3 of 5Under Prime Perimeter (in Logic)
Posted on 2005-03-11 (89 Comments)
re(2): Semi-Solution? by Richard (2005-03-11 19:14:59)
Difficulty: 5 of 5Under Sastry's Evil Bisectors (in Geometry)
Posted on 2005-03-04 (10 Comments)
Bisector of the Right Angle by Richard (2005-03-14 01:53:42)
Solution Product in terms of a,b,c only by Richard (2005-03-12 19:49:06)
Product by Richard (2005-03-05 09:00:49)
Difficulty: 2 of 5Under Hajja's Rational Cosine (in Geometry)
Posted on 2005-03-02 (2 Comments)
Other Half by Richard (2005-03-02 22:59:26)
Difficulty: 3 of 5Under Broken Hypotenuse (in Geometry)
Posted on 2005-02-28 (10 Comments)
re: No Subject by Richard (2005-03-01 16:56:57)
Solution Another Solution by Richard (2005-03-01 00:48:56)
Solution Solution by Richard (2005-02-28 18:49:33)
Difficulty: 2 of 5Under 9! (in Just Math)
Posted on 2005-02-28 (12 Comments)
Hint - Don't Peek by Richard (2005-02-28 15:59:36)
Difficulty: 2 of 5Under Magic constant (in Numbers)
Posted on 2005-02-23 (5 Comments)
re(3): Spoiler by Richard (2005-02-25 17:04:07)
re: Spoiler by Richard (2005-02-23 15:50:47)
Difficulty: 4 of 5Under Sums of Squares (in Numbers)
Posted on 2005-02-21 (8 Comments)
re: researched (spoiler) by Richard (2005-02-22 17:22:39)
Difficulty: 2 of 5Under Mowing (in General)
Posted on 2005-02-12 (7 Comments)
re: No Subject by Richard (2005-02-26 01:40:48)
re: questions by Richard (2005-02-14 18:55:47)
Difficulty: 2 of 5Under Difference of Cubes OF DOOM (in Just Math)
Posted on 2005-02-11 (8 Comments)
re: No Subject -- NO ERROR by Richard (2005-02-11 19:18:00)
re(3): No Subject -- No Error by Richard (2005-02-11 18:57:38)
re: No Subject -- Error? by Richard (2005-02-11 17:34:55)
Difficulty: 4 of 5Under Even and odd powers (in Just Math)
Posted on 2005-02-09 (22 Comments)
re(5): No Subject by Richard (2005-02-28 03:04:01)
Difficulty: 4 of 5Under Connect The Dots (in Geometry)
Posted on 2005-02-06 (14 Comments)
re(2): Detailed Solution by Richard (2005-02-06 21:52:45)
Solution Detailed Solution by Richard (2005-02-06 18:41:27)
Difficulty: 5 of 5Under Pizza Cutter (in Geometry)
Posted on 2005-02-04 (11 Comments)
re(3): thoughts -- Somewhat messy solution by Richard (2005-02-09 18:21:00)
Solution re(2): thoughts -- Somewhat messy solution by Richard (2005-02-09 05:51:47)
re: thoughts by Richard (2005-02-06 01:14:54)
1/2 much less doubtful by Richard (2005-02-05 07:49:32)
1/2 Doubtful by Richard (2005-02-04 22:32:13)
Difficulty: 4 of 5Under Voting power distribution (in General)
Posted on 2005-01-24 (13 Comments)
re: Clarification by Richard (2005-01-25 01:57:49)
Question Perplexed by Richard (2005-01-24 21:56:37)
Difficulty: 3 of 5Under I See No Ships (in Geometry)
Posted on 2005-01-23 (15 Comments)
re: Solution (4 miles?) by Richard (2005-01-23 16:41:51)
Difficulty: 3 of 5Under Broken Calculator (in Just Math)
Posted on 2005-01-20 (14 Comments)
Solution Spoiler? by Richard (2005-01-21 00:15:12)
Difficulty: 4 of 5Under Remainder of One (in Just Math)
Posted on 2004-12-29 (13 Comments)
re(3): Yet another Erdos theorem by Richard (2005-01-26 00:04:28)
re: Yet another Erdos theorem by Richard (2005-01-25 20:58:35)
p <= 5 and more by Richard (2004-12-31 18:10:49)
re: Yet another Erdos theorem by Richard (2004-12-30 17:37:58)
Difficulty: 4 of 5Under The sum of a sequence (in Just Math)
Posted on 2004-12-14 (10 Comments)
A non-calculus solution by Richard (2004-12-15 00:41:42)
Solution calculus solution by Richard (2004-12-14 17:41:22)
Difficulty: 3 of 5Under Many heads (in Probability)
Posted on 2004-12-13 (6 Comments)
Nice One, Charlie by Richard (2004-12-13 22:10:02)
Difficulty: 3 of 5Under Division (in Just Math)
Posted on 2004-12-11 (16 Comments)
re(2): Really Hard? by Richard (2004-12-12 19:23:44)
re(2): partial solution (for N composite) by Richard (2004-12-12 19:20:54)
Really Hard? by Richard (2004-12-12 19:02:35)
Difficulty: 2 of 5Under Multi-Logarithms (in Just Math)
Posted on 2004-12-08 (10 Comments)
re(3): I think by Richard (2005-01-21 03:11:36)
Difficulty: 3 of 5Under Center Digits (in Numbers)
Posted on 2004-11-28 (15 Comments)
Sloane by Richard (2004-11-30 05:15:17)
Difficulty: 4 of 5Under Exponential Difficulties 2 (in Just Math)
Posted on 2004-11-27 (9 Comments)
Reference by Richard (2004-11-28 05:20:54)
Difficulty: 3 of 5Under Triangle Circle (in Geometry)
Posted on 2004-11-20 (8 Comments)
re: Solution by Richard (2004-11-20 19:31:22)
Difficulty: 5 of 5Under Next Numbers Please #4 (in Sequences)
Posted on 2004-11-16 (13 Comments)
re: Solution (if errors in problem) by Richard (2004-11-20 06:38:40)
Difficulty: 4 of 5Under Kool Numbers (in Numbers)
Posted on 2004-11-15 (10 Comments)
re: Part 3 Done (I think) by Richard (2004-11-15 21:10:41)
Difficulty: 2 of 5Under Leaps of Faith (in Sequences)
Posted on 2004-11-15 (12 Comments)
Sloane Says by Richard (2004-11-17 15:53:17)
Difficulty: 3 of 5Under Up to 35 (in Just Math)
Posted on 2004-11-14 (5 Comments)
Scaled Down Version by Richard (2004-11-15 00:35:56)
Difficulty: 3 of 5Under Speaking Volumes (in Numbers)
Posted on 2004-11-10 (18 Comments)
Reference by Richard (2004-11-16 22:01:26)
Difficulty: 3 of 5Under On Tour (in Cryptography)
Posted on 2004-11-03 (28 Comments)
re(2): Number hints by Richard (2004-11-11 13:12:59)
re: solution by Richard (2004-11-10 22:04:53)
re: Hints and stuff by Richard (2004-11-09 14:01:16)
re: Random thoughts by Richard (2004-11-05 12:49:15)
Difficulty: 3 of 5Under 2-way maze (in General)
Posted on 2004-11-01 (20 Comments)
re(4): A Try by Richard (2004-11-03 21:54:51)
re(2): A Try by Richard (2004-11-01 22:55:17)
A Try by Richard (2004-11-01 22:41:59)
Difficulty: 4 of 5Under Exponential Difficulties (in Just Math)
Posted on 2004-10-30 (6 Comments)
re(2): Solution? by Richard (2004-10-30 18:14:23)
Solution? by Richard (2004-10-30 17:27:09)
Difficulty: 5 of 5Under The Watchdog (in Calculus)
Posted on 2004-10-28 (29 Comments)
Reference by Richard (2004-10-30 07:21:23)
Why Red Zone? by Richard (2004-10-28 17:38:11)
Difficulty: 3 of 5Under Triangular Coordinates (in Numbers)
Posted on 2004-10-26 (11 Comments)
re: What's this? by Richard (2004-11-01 16:59:10)
Reference by Richard (2004-10-27 04:49:38)
re: What's this? by Richard (2004-10-26 23:20:17)
re: Solution by Richard (2004-10-26 18:41:36)
re: What's a triangular number? by Richard (2004-10-26 18:27:19)
Difficulty: 3 of 5Under No Rotation Dissection (in Shapes)
Posted on 2004-10-19 (25 Comments)
re: Solution (really!) by Richard (2004-10-21 21:57:41)
re: Oops! by Richard (2004-10-21 03:34:38)
re: Think I have it by Richard (2004-10-20 22:26:08)
re: One possible Solution (visual) by Richard (2004-10-20 00:12:02)
Difficulty: 4 of 5Under Circles Abound (2) (in Geometry)
Posted on 2004-10-17 (11 Comments)
re: Phi Again by Richard (2004-10-19 06:22:02)
re: a start by Richard (2004-10-17 17:42:08)
Difficulty: 2 of 5Under The Sum of the Parts Is Less Than And More Than the Parts (in Numbers)
Posted on 2004-10-15 (11 Comments)
re: Simple proof by Richard (2004-10-16 22:55:17)
Difficulty: 3 of 5Under Candy Box (in Numbers)
Posted on 2004-10-08 (17 Comments)
re(2): About 9 pieces by Richard (2004-10-08 20:26:36)
re(3): Solution by Richard (2004-10-08 20:14:50)
re: Solution by Richard (2004-10-08 14:30:14)
Difficulty: 2 of 5Under Chessboard Coin (in Probability)
Posted on 2004-10-08 (21 Comments)
Question re(2): Dumb Question by Richard (2004-10-08 13:40:02)
Question Dumb Question by Richard (2004-10-08 12:15:22)
Difficulty: 3 of 5Under Similar Sequence Sum! (in Just Math)
Posted on 2004-10-07 (6 Comments)
Like "Fibonacci sums" by Richard (2004-10-07 14:11:29)
Difficulty: 3 of 5Under Isn't It Integer? (in Just Math)
Posted on 2004-10-06 (3 Comments)
re: Solution by Richard (2004-10-07 14:49:26)
Difficulty: 3 of 5Under A New Solid (in Shapes)
Posted on 2004-10-05 (19 Comments)
Link with Figures by Richard (2004-10-05 14:02:51)
Difficulty: 3 of 5Under Is It Infinitely Increasing? (in Just Math)
Posted on 2004-09-30 (13 Comments)
re(2): Solution by Googling by Richard (2004-10-13 17:39:07)
Solution Solution by Googling by Richard (2004-10-13 01:03:52)
Difficulty: 2 of 5Under Merit Review (in Sequences)
Posted on 2004-09-28 (6 Comments)
re(4): Answer by Richard (2004-09-29 15:50:19)
re: Answer by Richard (2004-09-28 18:52:51)
re(2): Answer by Richard (2004-09-28 18:27:35)
Difficulty: 4 of 5Under Spot the Difference (in Sequences)
Posted on 2004-09-26 (9 Comments)
re(2): Self Powered SHIFTED by Richard (2004-09-26 17:27:01)
Difficulty: 5 of 5Under FIGURE it out (2) (in General)
Posted on 2004-09-25 (14 Comments)
re(3): might take a while... by Richard (2004-09-26 20:20:36)
re: might take a while... by Richard (2004-09-26 17:49:45)
Difficulty: 2 of 5Under Interesting sequence (2) (in Sequences)
Posted on 2004-09-24 (6 Comments)
Solution Solution (spoiler) by Richard (2004-09-24 12:03:40)
Difficulty: 3 of 5Under Rare Rotative Relationship! (in Numbers)
Posted on 2004-09-23 (13 Comments)
re(2): Solutions with interpretations by Richard (2004-09-24 00:47:05)
Difficulty: 3 of 5Under Squaring shapes: (in Geometry)
Posted on 2004-09-22 (9 Comments)
Euclid's Solution by Richard (2004-09-24 00:42:11)
re(3): Solution by Richard (2004-09-22 21:17:00)
re: Solution by Richard (2004-09-22 15:09:30)
Difficulty: 4 of 5Under Get one half by squaring (in Just Math)
Posted on 2004-09-20 (31 Comments)
re: An eleven terms solution by Richard (2004-09-21 21:40:53)
Food for Thought by Richard (2004-09-21 13:47:09)
re: Solution by Richard (2004-09-20 22:02:34)
Difficulty: 2 of 5Under Highest Number (in Just Math)
Posted on 2004-09-18 (19 Comments)
re: shouldent this be right? by Richard (2006-08-26 18:20:48)
Difficulty: 3 of 5Under A pool rack filled with balls (in Geometry)
Posted on 2004-09-17 (25 Comments)
re(5): Solution by Richard (2004-09-24 13:17:16)
re(3): Solution by Richard (2004-09-24 04:09:34)
re: Solution by Richard (2004-09-23 21:51:16)
Difficulty: 2 of 5Under Third Squared (in Shapes)
Posted on 2004-09-15 (7 Comments)
re: Solution by Richard (2004-09-15 19:29:42)
Difficulty: 1 of 5Under Gonna party like it's 1999 (in Just Math)
Posted on 2004-09-12 (7 Comments)
re(2): Solution by Richard (2004-09-12 18:49:04)
Difficulty: 4 of 5Under FIGURE it out ! (in General)
Posted on 2004-09-10 (12 Comments)
re: My take by Richard (2004-09-10 23:11:18)
Difficulty: 4 of 5Under Measure that angle III (in Geometry)
Posted on 2004-09-07 (25 Comments)
Link (spoilers for sure) by Richard (2004-09-10 19:26:57)
re: Solution by cheating by Richard (2004-09-08 13:32:10)
Trig to Non-Trig? by Richard (2004-09-08 12:37:36)
Difficulty: 2 of 5Under Measure that angle II (in Geometry)
Posted on 2004-09-01 (16 Comments)
Solution Concise Solution by Richard (2004-09-01 14:14:34)
Difficulty: 5 of 5Under Unique Necklaces (in General)
Posted on 2004-08-18 (15 Comments)
re(7): There is an error is this puzzle by Richard (2004-08-21 13:16:55)
re(5): There is an error is this puzzle by Richard (2004-08-19 21:00:57)
Difficulty: 4 of 5Under Angry Friends (in Geometry)
Posted on 2004-08-17 (15 Comments)
re: Better Still by Richard (2004-08-19 13:36:21)
re: New Solution by Richard (2004-08-17 15:32:08)
Difficulty: 4 of 5Under Inverted powers (in Calculus)
Posted on 2004-08-10 (2 Comments)
Solution Soln using derivatives of x^x by Richard (2004-08-10 18:33:07)
Difficulty: 3 of 5Under Pile of Cannonballs (in General)
Posted on 2004-08-03 (12 Comments)
re: solution by Richard (2004-08-05 00:35:59)
re: 10 balls by Richard (2004-08-03 21:42:11)
Difficulty: 3 of 5Under tic-tac-toe (in Probability)
Posted on 2004-07-30 (14 Comments)
re(2): Answer by Richard (2004-07-30 23:41:17)
Difficulty: 3 of 5Under Maximum sum (in Probability)
Posted on 2004-07-29 (9 Comments)
Solution Solution By Convolution by Richard (2004-08-02 22:05:38)
Difficulty: 1 of 5Under funny numbers (in Numbers)
Posted on 2004-07-28 (19 Comments)
Solution Reference by Googling by Richard (2004-07-28 14:00:19)
Difficulty: 2 of 5Under Jack's Ladder (in Shapes)
Posted on 2004-07-27 (22 Comments)
Solution Solution Via Coordinates by Richard (2004-07-27 15:00:39)
Difficulty: 4 of 5Under Just by hand, only by hand, nothing but by hand? (in Algorithms)
Posted on 2004-07-26 (7 Comments)
re: put another way by Richard (2004-07-26 23:30:13)
A Very Primitive Method by Richard (2004-07-26 13:49:47)
Difficulty: 3 of 5Under Different Sums (in Numbers)
Posted on 2004-07-22 (17 Comments)
re(2): My solution by Richard (2004-07-24 14:54:36)
re(3): Curious second differences by Richard (2004-07-23 21:00:08)
Solution Analytical Solution by Richard (2004-07-22 23:07:39)
Difficulty: 3 of 5Under 10,000 (in Numbers)
Posted on 2004-07-21 (10 Comments)
Consecutive Deja Vu by Richard (2004-07-21 12:49:03)
Difficulty: 3 of 5Under Fibonacci sums (in Just Math)
Posted on 2004-07-15 (13 Comments)
More by Richard (2004-07-15 22:54:46)
re(2): what is being asked??? by Richard (2004-07-15 22:17:37)
Difficulty: 3 of 5Under A Keg of Wine (in Just Math)
Posted on 2004-07-14 (26 Comments)
re: Different Solution - Where Am I going wrong? by Richard (2004-07-19 15:32:48)
Solution by Richard (2004-07-14 13:36:47)
Difficulty: 3 of 5Under Break a dollar (in Numbers)
Posted on 2004-07-14 (8 Comments)
re: i think i have the answer by Richard (2004-07-19 22:39:23)
Difficulty: 3 of 5Under Who wins? (in Probability)
Posted on 2004-07-08 (9 Comments)
re: easy math but laterally??? by Richard (2004-07-09 14:08:47)
Solution Counting the Ways by Richard (2004-07-08 14:59:23)
Difficulty: 3 of 5Under Step Function (in Calculus)
Posted on 2004-07-07 (7 Comments)
Answer (Don't Peek) by Richard (2004-07-07 12:23:19)
Difficulty: 3 of 5Under Hands On A Clock (in General)
Posted on 2004-07-05 (23 Comments)
Solution Another Approach by Richard (2004-07-05 14:54:58)
Difficulty: 5 of 5Under Parking Cars (in Probability)
Posted on 2004-07-01 (14 Comments)
re: simulation by Richard (2004-07-05 19:49:36)
Google-able (spoiler) by Richard (2004-07-05 16:59:07)
Difficulty: 3 of 5Under All Wired Up (in Logic)
Posted on 2004-06-30 (33 Comments)
re(2): Solution by Richard (2004-06-30 16:20:08)
Solution Solution by Richard (2004-06-30 14:42:15)
Difficulty: 3 of 5Under Subsetting a set (in Numbers)
Posted on 2004-06-29 (9 Comments)
re(3): solution 1st part by Richard (2004-06-29 14:47:08)
re: solution 1st part by Richard (2004-06-29 14:35:37)
Difficulty: 3 of 5Under Root Route (in Algorithms)
Posted on 2004-06-29 (7 Comments)
How ENIAC Did It by Richard (2006-08-16 23:11:33)
Difficulty: 3 of 5Under Consecutive Integer Sums (in Numbers)
Posted on 2004-06-28 (22 Comments)
Riley's Method by Richard (2004-07-03 15:32:30)
re: How to thread these by Richard (2004-06-29 17:56:15)
re(3): Computer solution by Richard (2004-06-29 15:42:34)
Interesting Reference by Richard (2004-06-28 22:27:28)
re: Computer solution by Richard (2004-06-28 21:52:31)
re(2): Possible Solution by Richard (2004-06-28 18:52:50)
Possible Solution by Richard (2004-06-28 18:28:05)
Difficulty: 3 of 5Under You say you want a revolution... (in Geometry)
Posted on 2004-06-27 (12 Comments)
re(2): No Subject, mmmmmm by Richard (2004-06-27 14:39:10)
Difficulty: 3 of 5Under Multiplying gets a square? (in Just Math)
Posted on 2004-06-26 (25 Comments)
re: Solution by Richard (2004-06-26 15:48:42)
Difficulty: 4 of 5Under Tetrahedral Dilemma (in Geometry)
Posted on 2004-06-23 (8 Comments)
Reference and Some Discussion by Richard (2004-06-23 23:23:19)
Difficulty: 3 of 5Under my house's number (in Numbers)
Posted on 2004-06-21 (32 Comments)
re: Solution by Richard (2004-06-21 12:47:34)
Difficulty: 4 of 5Under Equilateral Triangle (in Geometry)
Posted on 2004-06-20 (21 Comments)
re: Another way to think about it... by Richard (2004-06-25 13:28:49)
re(3): short answers to a short q. by Richard (2004-06-22 13:04:33)
Reference by Richard (2004-06-20 19:53:33)
3D, YES; 2D ??? by Richard (2004-06-20 14:27:03)
Difficulty: 4 of 5Under The odds stay unchanged (in Just Math)
Posted on 2004-06-17 (21 Comments)
Hints/Tips Possibility? (spoiler?) by Richard (2004-06-17 13:54:38)
Difficulty: 4 of 5Under What's the difference between snowmen and snowwomen? (in Just Math)
Posted on 2004-06-14 (16 Comments)
re(2): Via ODE by Richard (2004-06-15 02:55:16)
Solution Via ODE by Richard (2004-06-14 13:34:38)
Difficulty: 3 of 5Under Mikhail's Sequence (in Sequences)
Posted on 2004-06-13 (12 Comments)
re: A wonderful puzzle (Solution) by Richard (2004-06-13 17:50:12)
Difficulty: 3 of 5Under Another Point In A Square (in Geometry)
Posted on 2004-06-11 (16 Comments)
re: Generalization by Richard (2004-06-14 19:33:34)
Difficulty: 5 of 5Under Bird on a Wire (in Just Math)
Posted on 2004-06-07 (42 Comments)
re: What the problem is asking by Richard (2004-06-09 13:28:07)
re(4): Concrete Answer is (n-1)/(n+1) by Richard (2004-06-09 13:17:58)
Some Research by Richard (2004-06-09 00:13:58)
re(2): Concrete Answer is (n-1)/(n+1) by Richard (2004-06-08 21:23:16)
Concrete Answer is (n-1)/(n+1) by Richard (2004-06-08 18:11:35)
re: Abstract Answer by Richard (2004-06-08 05:22:06)
Abstract Answer by Richard (2004-06-07 20:15:36)
Two Birds by Richard (2004-06-07 15:02:49)
Difficulty: 2 of 5Under Gloves (in Numbers)
Posted on 2004-06-03 (30 Comments)
Solution re: Better than 28. by Richard (2004-06-03 23:26:28)
Difficulty: 2 of 5Under The Fur Dresser's Mistake (in Geometry)
Posted on 2004-05-28 (12 Comments)
re(2): Half an answer by Richard (2004-05-28 14:34:53)
Difficulty: 3 of 5Under Sum of Cubes (in Numbers)
Posted on 2004-05-25 (11 Comments)
Solution Difference Method by Richard (2004-05-25 16:06:56)
Difficulty: 5 of 5Under Perfect Shuffle (in General)
Posted on 2004-05-19 (20 Comments)
re(3): Making a sequence (spoilers on the numbers) by Richard (2004-05-20 00:04:46)
Difficulty: 5 of 5Under Ellipses (in Geometry)
Posted on 2004-05-17 (12 Comments)
Solution Concise Solution by Richard (2004-05-18 14:54:06)
Difficulty: 3 of 5Under Pythagorean Plus One (in Numbers)
Posted on 2004-05-17 (20 Comments)
re: solution by Richard (2004-05-22 21:24:38)
re: Maybe a really smart floobler..... by Richard (2004-05-17 14:54:34)
Difficulty: 3 of 5Under Shortest Long Number (in Paradoxes)
Posted on 2004-04-15 (49 Comments)
A (good?) reference by Richard (2004-04-15 22:40:27)
re(5): Tentative solution - Definitions by Richard (2004-04-15 17:39:59)
Difficulty: 2 of 5Under Ahnentafel Questions (I) (in General)
Posted on 2004-04-11 (15 Comments)
re(5): Thanks heaps! by Richard (2004-04-14 15:17:53)
re(3): Thanks heaps! by Richard (2004-04-13 13:38:54)
Difficulty: 2 of 5Under Who's the odd one out? (in Word Problems)
Posted on 2004-04-10 (37 Comments)
SOLUTION by Richard (2004-04-10 13:45:07)
Difficulty: 2 of 5Under Cars on the road (in Probability)
Posted on 2004-04-09 (20 Comments)
re(5): One Mean Poisson = Shark by Richard (2004-04-09 21:35:36)
re(3): One Mean Poisson = Shark by Richard (2004-04-09 21:13:53)
re(3): Auto-suggestion by Richard (2004-04-09 14:28:47)
Difficulty: 2 of 5Under Vowel Deficit (in Word Problems)
Posted on 2004-04-07 (22 Comments)
re(2): a solution by Richard (2004-04-07 13:07:38)
Difficulty: 3 of 5Under Disjointification (in Just Math)
Posted on 2004-04-04 (12 Comments)
re: Impossible cases by Richard (2004-04-05 13:29:25)
re: Solution? Too simple? by Richard (2004-04-05 13:24:58)
re(4): Suggestions from Proposer by Richard (2004-04-04 20:49:44)
re(2): Suggestions from Proposer by Richard (2004-04-04 18:44:30)
Suggestions from Proposer by Richard (2004-04-04 13:15:03)
Difficulty: 3 of 5Under new operations (in Just Math)
Posted on 2004-03-31 (14 Comments)
re(2): And $ Makes 30 ...er...6 I mean by Richard (2004-03-31 20:09:52)
And $ Makes 30 by Richard (2004-03-31 16:40:37)
Difficulty: 3 of 5Under Birthday Line (in Probability)
Posted on 2004-03-29 (21 Comments)
re: Function by Richard (2004-04-03 21:31:07)
re(4): Function [with observations] by Richard (2004-04-03 14:53:00)
re(2): Function [with observations] by Richard (2004-03-31 17:19:55)
Difficulty: 4 of 5Under Chords and Chords (in Geometry)
Posted on 2004-03-24 (23 Comments)
re(7): stumper -- A Visual Guess by Richard (2004-03-26 23:01:06)
re(5): stumper -- A Visual Guess by Richard (2004-03-26 16:57:53)
re(3): stumper -- A Visual Guess by Richard (2004-03-26 16:18:24)
re: stumper -- A Visual Guess by Richard (2004-03-26 13:06:13)
Difficulty: 2 of 5Under The similar sheet (in Geometry)
Posted on 2004-03-22 (18 Comments)
Solution Solution by Richard (2004-03-22 13:31:52)
Difficulty: 3 of 5Under A square squared (in Shapes)
Posted on 2004-03-20 (5 Comments)
Solution Solution by vector algebra by Richard (2004-03-20 20:02:54)
Difficulty: 4 of 5Under Six Bugs (in Shapes)
Posted on 2004-03-16 (8 Comments)
Where's Penny by Richard (2004-03-21 12:22:04)
Difficulty: 3 of 5Under Diagonal triangle sums (in Just Math)
Posted on 2004-03-15 (4 Comments)
Solution A Different Presentation by Richard (2004-03-15 19:16:27)
Difficulty: 3 of 5Under Spirit of '76 (in Just Math)
Posted on 2004-03-14 (8 Comments)
HINTS, maybe by Richard (2004-03-14 12:40:41)
Difficulty: 5 of 5Under Happy Birthday (2) (in Probability)
Posted on 2004-03-11 (5 Comments)
2 More Links by Richard (2004-03-16 20:26:26)
Link by Richard (2004-03-12 23:05:15)
Difficulty: 2 of 5Under A to B (in Just Math)
Posted on 2004-03-10 (15 Comments)
re: solution by Richard (2004-03-10 20:17:40)
Difficulty: 3 of 5Under XX (in Logic)
Posted on 2004-03-07 (69 Comments)
I picked up my hammer and saw by Richard (2004-03-10 01:53:23)
Difficulty: 3 of 5Under Ten Colors (in General)
Posted on 2004-03-05 (6 Comments)
References by Richard (2004-03-05 19:05:46)
Some Thoughts 10 x 10 -- A Start by Richard (2004-03-05 13:26:18)
Difficulty: 3 of 5Under Open By Majority (in General)
Posted on 2004-03-03 (45 Comments)
re: Poor Solution by Richard (2004-03-03 16:49:38)
Difficulty: 2 of 5Under e, i, and π (in Just Math)
Posted on 2004-03-02 (12 Comments)
re(2): solution by Richard (2004-03-02 13:14:05)
re: solution by Richard (2004-03-02 13:10:47)
Difficulty: 2 of 5Under Move the 3, Triple the number (in Numbers)
Posted on 2004-03-01 (17 Comments)
re(5): Standard solution by Richard (2004-03-02 19:34:22)
re(3): Standard solution by Richard (2004-03-02 11:50:29)
re: Standard solution by Richard (2004-03-02 01:10:08)
Difficulty: 4 of 5Under Like Clockwork (in Geometry)
Posted on 2004-02-27 (29 Comments)
re(4): Spreadsheet solution. by Richard (2004-02-27 17:36:39)
re(2): Spreadsheet solution. by Richard (2004-02-27 16:19:02)
re: calculus based solution by Richard (2004-02-27 16:11:13)
Difficulty: 3 of 5Under The not-always-lying politician (in General)
Posted on 2004-02-27 (20 Comments)
re: Re: Fibonacci by Richard (2004-02-28 12:49:42)
Difficulty: 3 of 5Under neves dda tsuj (in Numbers)
Posted on 2004-02-22 (11 Comments)
re(2): Straightforward , but not so by Richard (2004-02-24 11:44:04)
Solution Straightforward Solution by Richard (2004-02-23 20:41:28)
Difficulty: 4 of 5Under Number Series (in Sequences)
Posted on 2004-02-14 (11 Comments)
link by Richard (2004-02-14 23:19:40)
Difficulty: 4 of 5Under Triple Negative (in Logic)
Posted on 2004-02-12 (19 Comments)
re: So... by Richard (2004-02-14 23:48:49)
Difficulty: 2 of 5Under The three squirrels (in Numbers)
Posted on 2004-02-12 (12 Comments)
re: Solution, being technical by Richard (2004-02-12 19:32:58)
Difficulty: 4 of 5Under Cubic AND Quartic Challenge (in Numbers)
Posted on 2004-02-06 (15 Comments)
re(2): Hardy's Story by Richard (2004-02-09 12:58:27)
Hardy's Story by Richard (2004-02-06 16:17:23)
Difficulty: 3 of 5Under A Boy, a Girl, a Dog, and a Bicycle (in General)
Posted on 2004-02-03 (21 Comments)
re: A Boy, a Girl, a Dog, and a Bicycle by Richard (2004-02-11 21:11:39)
re: Better late than never... by Richard (2004-02-03 20:40:21)
Difficulty: 3 of 5Under Unit Cubes (in Shapes)
Posted on 2004-02-02 (15 Comments)
re: Short solution by Richard (2004-02-02 21:33:18)
Difficulty: 2 of 5Under The glass balls (in General)
Posted on 2004-01-30 (5 Comments)
Masterful Obfuscation by Richard (2004-01-31 01:09:24)
Difficulty: 3 of 5Under Superimposition (in General)
Posted on 2004-01-30 (10 Comments)
I Say No by Richard (2004-01-30 12:35:46)
Difficulty: 3 of 5Under Sum Of The Digits (in Numbers)
Posted on 2004-01-27 (13 Comments)
re(2): super easy by Richard (2004-01-27 12:03:26)
Difficulty: 3 of 5Under A Boy, a Girl, and a Dog (in General)
Posted on 2004-01-24 (15 Comments)
re: Sit !! Stay !! by Richard (2004-01-27 14:36:27)
re: Question by Richard (2004-01-24 20:43:45)
re: Official solution (spoiler) by Richard (2004-01-24 12:25:45)
Difficulty: 3 of 5Under Truncated Cone (in Shapes)
Posted on 2004-01-23 (10 Comments)
Question Geometric Interpretation of Simpler Formula? by Richard (2004-01-26 19:06:43)
re(3): general equation: by Richard (2004-01-26 17:10:51)
re: general equation: by Richard (2004-01-24 12:36:19)
Solution Solution by Richard (2004-01-23 13:12:00)
Difficulty: 3 of 5Under Last Digit (in Just Math)
Posted on 2004-01-23 (19 Comments)
re: Last two digits by Richard (2004-01-30 22:09:15)
Difficulty: 4 of 5Under Three Bugs (in Shapes)
Posted on 2004-01-22 (16 Comments)
re: There must be some bugs in this solution !!! by Richard (2004-01-22 16:45:58)
Difficulty: 2 of 5Under Squares and Rectangles (in Just Math)
Posted on 2004-01-21 (20 Comments)
re: My answer by Richard (2004-01-22 16:59:17)
re(2): One direction at a time by Richard (2004-01-22 13:18:40)
re: The real deal: 11,550? Mine was a little smaller than that... by Richard (2004-01-21 20:56:15)
Difficulty: 2 of 5Under Square challenge (in Numbers)
Posted on 2004-01-20 (16 Comments)
re: A hardy perennial by Richard (2004-01-20 15:19:23)
Difficulty: 3 of 5Under Extraterrestrial primes (in Numbers)
Posted on 2004-01-19 (7 Comments)
Question ET? by Richard (2004-01-20 00:45:06)
Some Thoughts It looks to me like ... by Richard (2004-01-19 13:42:34)
Difficulty: 3 of 5Under Horse Race (in General)
Posted on 2004-01-19 (20 Comments)
Question Below? by Richard (2004-01-21 23:12:44)
Difficulty: 5 of 5Under How many points can you place? (in Games)
Posted on 2004-01-16 (25 Comments)
Question Nonuniform Epsilon? by Richard (2004-01-20 18:22:37)
Difficulty: 2 of 5Under Circle Square (in Geometry)
Posted on 2004-01-13 (15 Comments)
re: Super Blonde? Of course ... by Richard (2004-10-20 18:45:02)
re(2): Please Note by Richard (2004-10-20 04:37:46)
re: Please Note by Richard (2004-10-20 00:28:06)
Difficulty: 2 of 5Under Time Please (in Just Math)
Posted on 2004-01-12 (8 Comments)
Solution Different Answer by Richard (2004-01-12 23:58:20)
Difficulty: 3 of 5Under Buying Chestnuts (in Tricks)
Posted on 2004-01-05 (19 Comments)
5 too many whats? by Richard (2004-01-05 22:16:06)
Difficulty: 2 of 5Under Swap (in Algorithms)
Posted on 2004-01-02 (11 Comments)
Question No Math? by Richard (2004-01-02 21:51:47)
re(2): other solutions by Richard (2004-01-02 21:47:58)
Difficulty: 3 of 5Under How Many ? (in Just Math)
Posted on 2004-01-02 (6 Comments)
Solution Solution by Richard (2004-01-02 10:51:26)
Difficulty: 3 of 5Under Simple Math? (in General)
Posted on 2003-12-30 (12 Comments)
Question Null Author? by Richard (2004-01-03 19:18:04)
Difficulty: 3 of 5Under English Word (in Word Problems)
Posted on 2003-12-26 (10 Comments)
Question re: Still more...LONGEST? by Richard (2004-04-08 00:25:07)
Difficulty: 4 of 5Under Prime real estate (in Sequences)
Posted on 2003-12-24 (4 Comments)
re: None by Richard (2003-12-24 13:47:41)
Difficulty: 4 of 5Under Numbers and Dots (in Numbers)
Posted on 2003-12-24 (12 Comments)
4/99 high by Richard (2003-12-24 14:18:41)
Difficulty: 3 of 5Under Farmer's dilemma (in Geometry)
Posted on 2003-12-23 (10 Comments)
Contiguous? by Richard (2003-12-23 13:26:18)
Difficulty: 3 of 5Under Flat Out (in General)
Posted on 2003-12-17 (23 Comments)
re: solution by Richard (2003-12-18 01:24:20)
Difficulty: 3 of 5Under The Highest Grade (in Numbers)
Posted on 2003-12-11 (15 Comments)
Question Continued Fractions? by Richard (2003-12-11 16:55:24)
Difficulty: 3 of 5Under Shortest distance (in Shapes)
Posted on 2003-12-10 (16 Comments)
re(2): What is R? by Richard (2003-12-10 23:46:07)
Question What is R? by Richard (2003-12-10 18:22:35)
Difficulty: 3 of 5Under How it Started (Eve Did Talk) (in Word Problems)
Posted on 2003-12-10 (7 Comments)
re(4): Solution--not unique (computer program used this time) by Richard (2003-12-10 18:10:26)
re(2): Solution--not unique (computer program used this time) by Richard (2003-12-10 13:08:35)
Difficulty: 2 of 5Under The Ladder (in Just Math)
Posted on 2003-12-09 (20 Comments)
re: Another approach by Richard (2004-02-23 20:56:28)
Solution Solution: Equation in One Unknown by Richard (2003-12-09 16:26:15)
Difficulty: 2 of 5Under Squares and Cubes (in Numbers)
Posted on 2003-12-06 (21 Comments)
re(4): And after that there's... by Richard (2003-12-07 15:07:21)
re: And after that there's... by Richard (2003-12-06 21:44:54)
re(2): Nontrivial Implied by Richard (2003-12-06 16:32:26)
Nontrivial Implied by Richard (2003-12-06 12:57:37)
Difficulty: 4 of 5Under The Powers that Be (in Just Math)
Posted on 2003-11-25 (19 Comments)
re(5): solution by Richard (2003-11-27 18:58:30)
re: What's a complex number? by Richard (2003-11-27 00:32:18)
re(3): solution by Richard (2003-11-26 23:20:02)
re: solution by Richard (2003-11-26 19:00:29)
re(3): example of said case by Richard (2003-11-25 22:56:42)
Solution solution by Richard (2003-11-25 18:53:12)
Difficulty: 3 of 5Under Sides Of A Triangle (in Just Math)
Posted on 2003-11-23 (14 Comments)
re(4): Starters- self correction by Richard (2003-11-23 15:19:54)
re(2): Starters- self correction by Richard (2003-11-23 13:05:52)
re: Starters by Richard (2003-11-23 12:40:57)
Difficulty: 3 of 5Under Crypto-Phrase (in Just Math)
Posted on 2003-11-20 (25 Comments)
re(3): 72-4-182-156-30-420 (correction) by Richard (2003-11-22 14:51:20)
re(2): correction(solution) by Richard (2003-11-22 14:38:14)
correction by Richard (2003-11-22 12:46:36)
No Subject by Richard (2003-11-22 12:40:01)
re(2): Code Revealed.. by Richard (2003-11-22 04:13:29)
Difficulty: 3 of 5Under Three numbers (in Just Math)
Posted on 2003-11-17 (21 Comments)
Solution Solution by Lagrange Multipliers by Richard (2003-11-18 23:22:18)
re(2): solution - corrected, I think by Richard (2003-11-18 00:40:16)
Difficulty: 3 of 5Under 50 - Digit Number (in Just Math)
Posted on 2003-11-15 (39 Comments)
re: Digit number by Richard (2004-01-24 17:51:29)
re: solution by Richard (2003-12-31 13:22:37)
re(7): solution by Richard (2003-11-23 12:24:27)
re(5): solution by Richard (2003-11-22 21:34:28)
No Subject by Richard (2003-11-22 21:31:34)
correction by Richard (2003-11-22 12:54:55)
re(3): solution by Richard (2003-11-21 17:48:09)
re: solution by Richard (2003-11-20 20:35:49)
re: A similar problem but perhaps a bit trickier by Richard (2003-11-20 17:47:15)
re(5): a little more straightforward by Richard (2003-11-19 21:30:45)
re(4): a little more straightforward by Richard (2003-11-19 21:21:06)
Solution re(2): a little more straightforward by Richard (2003-11-19 01:59:52)
re: a little more straightforward by Richard (2003-11-19 00:10:42)
Difficulty: 3 of 5Under Remainder (in Just Math)
Posted on 2003-10-16 (9 Comments)
re: full solution by Richard (2003-11-21 21:38:31)
We are in a field by Richard (2003-11-21 14:32:16)
Difficulty: 3 of 5Under Can 1 Dollar = 1 Cent (in Tricks)
Posted on 2003-05-03 (25 Comments)
Another Viewpoint by Richard (2004-04-10 14:13:01)
Difficulty: 3 of 5Under The Reindeers (in General)
Posted on 2003-04-07 (20 Comments)
Rudolph? by Richard (2006-08-03 03:03:13)
Difficulty: 4 of 5Under Prime Pairs (in Numbers)
Posted on 2002-09-01 (8 Comments)
re: Stronger result by Richard (2006-06-08 19:48:38)
Difficulty: 2 of 5Under Odd Sum (in Just Math)
Posted on 2002-08-08 (17 Comments)
re(2): Difference Method NO SHIFT by Richard (2004-04-05 14:18:25)
Difference Method by Richard (2004-04-04 18:12:59)
Difficulty: 3 of 5Under Definite Integral (in Calculus)
Posted on 2002-08-06 (14 Comments)
More Generally by Richard (2006-08-26 13:17:33)
Difficulty: 3 of 5Under A grid of people (in General)
Posted on 2002-07-09 (15 Comments)
Solution The crux of the matter by Richard (2003-12-13 23:51:03)
Difficulty: 2 of 5Under Coffee and Cream (in General)
Posted on 2002-06-21 (10 Comments)
Same Problem, Different Setting by Richard (2005-05-03 04:28:37)
Difficulty: 5 of 5Under Angle Trisection (in Geometry)
Posted on 2002-06-19 (28 Comments)
Reference by Richard (2005-05-30 02:43:40)
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