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Comment Search results for posted by xdog :
List Comments Posted in the Last:
Difficulty: 4 of 5Under Verify and prove (in Sequences)
Posted on 2017-12-10 (5 Comments)
statements and references by xdog (2017-12-10 12:30:44)
Difficulty: 3 of 5Under Pythagorean areas (in Numbers)
Posted on 2017-11-17 (7 Comments)
a skinny one by xdog (2017-11-19 07:55:07)
observations by xdog (2017-11-18 07:37:04)
Difficulty: 3 of 5Under Your creativity challenged (in Riddles)
Posted on 2017-11-15 (5 Comments)
fairy tale by xdog (2017-11-15 10:42:10)
Difficulty: 3 of 5Under Reverse Engineering I (in Cryptography)
Posted on 2017-11-09 (2 Comments)
hint via riddle by xdog (2017-11-09 11:27:26)
Difficulty: 2 of 5Under One digit answer (in Numbers)
Posted on 2017-11-08 (3 Comments)
solution by xdog (2017-11-08 16:42:21)
Difficulty: 3 of 5Under No big digits involved (in Numbers)
Posted on 2017-11-06 (2 Comments)
conjecture by xdog (2017-11-06 17:33:56)
Difficulty: 4 of 5Under Truth or consequences (in Just Math)
Posted on 2017-11-02 (2 Comments)
No Subject by xdog (2017-11-02 18:12:58)
Difficulty: 3 of 5Under Only one number qualifies! (in Numbers)
Posted on 2017-11-02 (2 Comments)
proof by xdog (2017-11-02 17:55:37)
Difficulty: 3 of 5Under Two SPECIAL PARTITIONS (in Numbers)
Posted on 2017-10-28 (4 Comments)
No Subject by xdog (2017-10-28 09:59:48)
Difficulty: 3 of 5Under One word - created by two others (in Word Problems)
Posted on 2017-10-25 (3 Comments)
No Subject by xdog (2017-10-25 08:54:35)
Difficulty: 3 of 5Under Solution's forecast (in Just Math)
Posted on 2017-10-24 (3 Comments)
solution by xdog (2017-10-25 12:07:23)
Difficulty: 3 of 5Under No integer roots (in Just Math)
Posted on 2017-10-22 (4 Comments)
shorter, not really different by xdog (2017-10-23 09:51:09)
No Subject by xdog (2017-10-22 17:42:51)
Difficulty: 3 of 5Under Does it continue? An original. (in Numbers)
Posted on 2017-10-20 (7 Comments)
No Subject by xdog (2017-10-20 13:46:50)
Difficulty: 4 of 5Under Alfey revava ... (in General)
Posted on 2017-10-17 (3 Comments)
No Subject by xdog (2017-10-17 18:14:55)
Difficulty: 3 of 5Under He, me, and you (in Word Problems)
Posted on 2017-10-16 (2 Comments)
solution part 1 by xdog (2017-10-16 18:49:14)
Difficulty: 4 of 5Under What's out? (in Word Problems)
Posted on 2017-10-13 (3 Comments)
anagrammatic spoilers by xdog (2017-10-13 08:17:56)
Difficulty: 2 of 5Under The next five... (in Sequences)
Posted on 2017-09-20 (2 Comments)
solution by xdog (2017-09-20 19:51:50)
Difficulty: 2 of 5Under Avoiding lattice midpoints (in General)
Posted on 2017-08-27 (3 Comments)
spoiler by xdog (2017-08-27 18:54:18)
Difficulty: 3 of 5Under A repunit product (in Word Problems)
Posted on 2017-08-19 (4 Comments)
another by xdog (2017-08-20 09:11:33)
Difficulty: 3 of 5Under Even (related) chances (in Probability)
Posted on 2017-08-09 (4 Comments)
the real surprise by xdog (2017-08-09 19:08:50)
closed form by xdog (2017-08-09 12:17:40)
Difficulty: 4 of 5Under Published in the thirties (in Famous Riddles)
Posted on 2017-08-03 (3 Comments)
re: Just Guessing (spoiler?) by xdog (2017-08-04 10:06:59)
Difficulty: 4 of 5Under Add'em all ! (in Numbers)
Posted on 2017-07-27 (3 Comments)
work by hand by xdog (2017-07-27 10:59:15)
Difficulty: 3 of 5Under From The Book of Squares (in Numbers)
Posted on 2017-07-26 (5 Comments)
No Subject by xdog (2017-07-26 10:04:32)
Difficulty: 4 of 5Under Just add 2 letters (in Word Problems)
Posted on 2017-07-06 (2 Comments)
No Subject by xdog (2017-07-06 08:51:14)
Difficulty: 3 of 5Under Names in Boxes (in Logic)
Posted on 2017-04-09 (10 Comments)
reference and solution by xdog (2017-04-12 12:42:48)
Difficulty: 3 of 5Under Integer triplets (in Just Math)
Posted on 2017-02-21 (4 Comments)
solution by xdog (2017-02-22 08:27:17)
Difficulty: 3 of 5Under Square expressions (in Numbers)
Posted on 2017-02-18 (3 Comments)
solution by xdog (2017-02-20 20:45:13)
Difficulty: 3 of 5Under Odds are ... (in Probability)
Posted on 2017-02-14 (8 Comments)
re: Higher numbers before overflow by xdog (2017-02-14 16:24:49)
Difficulty: 3 of 5Under Trying to reach a Pythagorean triplet (in Just Math)
Posted on 2017-02-12 (1 Comments)
solution by xdog (2017-02-13 10:36:36)
Difficulty: 3 of 5Under 1,3,8 ...extend! (in Numbers)
Posted on 2017-01-26 (4 Comments)
results from some reading by xdog (2017-01-26 17:03:43)
Difficulty: 4 of 5Under Square OR 2*square (in Numbers)
Posted on 2017-01-14 (2 Comments)
reference by xdog (2017-01-15 14:55:02)
Difficulty: 3 of 5Under Squares sum up to a prime (in Just Math)
Posted on 2017-01-13 (4 Comments)
response to comments by xdog (2017-01-14 07:50:35)
solution by xdog (2017-01-13 11:37:51)
Difficulty: 2 of 5Under Functional Question (in Just Math)
Posted on 2017-01-10 (2 Comments)
solution by xdog (2017-01-10 18:00:34)
Difficulty: 3 of 5Under Rational Resolution (in Just Math)
Posted on 2016-11-18 (2 Comments)
a start by xdog (2016-11-19 13:40:47)
Difficulty: 3 of 5Under Equal Temperatures (in Just Math)
Posted on 2016-10-31 (6 Comments)
re(2): No Subject by xdog (2016-10-31 13:03:39)
No Subject by xdog (2016-10-31 08:20:01)
Difficulty: 4 of 5Under Symmetry helps! (in Just Math)
Posted on 2016-10-26 (7 Comments)
No Subject by xdog (2016-10-26 23:03:01)
Difficulty: 3 of 5Under Figuring Forty-Nine and Sequence (in Sequences)
Posted on 2016-10-25 (2 Comments)
No Subject by xdog (2016-10-25 12:05:03)
Difficulty: 3 of 5Under Prime and Six Settlement (in Just Math)
Posted on 2016-10-17 (4 Comments)
sum not product by xdog (2016-10-17 09:37:48)
Difficulty: 3 of 5Under Three Root Trial (in Just Math)
Posted on 2016-09-10 (1 Comments)
solution by xdog (2016-09-11 09:45:48)
Difficulty: 2 of 5Under Expression and Square Sum (in Just Math)
Posted on 2016-08-17 (1 Comments)
solution by xdog (2016-08-17 10:47:06)
Difficulty: 3 of 5Under Real and Cyclic Sum (in Just Math)
Posted on 2016-08-10 (3 Comments)
adding on by xdog (2016-08-11 18:20:34)
Difficulty: 3 of 5Under Find additional pairs (in Just Math)
Posted on 2016-08-08 (5 Comments)
spoiler by xdog (2016-08-08 14:09:21)
Difficulty: 4 of 5Under Divisibility to Square II (in Just Math)
Posted on 2016-08-07 (2 Comments)
Part 1, offered without proof by xdog (2016-08-07 13:19:05)
Difficulty: 3 of 5Under Indivisibility by 529 (in Just Math)
Posted on 2016-07-25 (3 Comments)
completing the square by xdog (2016-07-25 17:47:27)
Difficulty: 3 of 5Under Seventh Term Settlement (in Sequences)
Posted on 2016-07-22 (10 Comments)
no bad equations by xdog (2016-07-22 12:41:08)
Difficulty: 3 of 5Under One of these things is not like the others.. (in Word Problems)
Posted on 2016-06-07 (5 Comments)
re(2): No Subject by xdog (2016-06-07 18:16:23)
No Subject by xdog (2016-06-07 09:49:47)
Difficulty: 3 of 5Under Power Sum Proposition (in Just Math)
Posted on 2016-06-04 (1 Comments)
solution by xdog (2016-06-04 13:59:35)
Difficulty: 2 of 5Under One and only (in Numbers)
Posted on 2016-04-28 (4 Comments)
spoiler by xdog (2016-04-28 09:52:53)
Difficulty: 3 of 5Under Integer Root Illation (in Just Math)
Posted on 2016-04-23 (5 Comments)
re(2): solution by xdog (2016-04-24 13:25:47)
solution by xdog (2016-04-24 10:26:19)
Difficulty: 3 of 5Under 1 to 9 concatenation (in Numbers)
Posted on 2016-04-12 (7 Comments)
a solution by xdog (2016-04-12 12:17:43)
Difficulty: 3 of 5Under Nonconstant Product (in Just Math)
Posted on 2016-04-02 (3 Comments)
solution, maybe not smallest by xdog (2016-04-02 09:26:38)
Difficulty: 2 of 5Under Variety of divisors (in Numbers)
Posted on 2015-12-03 (3 Comments)
re: solution by xdog (2015-12-03 11:48:49)
Difficulty: 2 of 5Under AINS (in Word Problems)
Posted on 2015-11-23 (3 Comments)
re(2): One possibility by xdog (2015-11-23 15:39:05)
Difficulty: 3 of 5Under Positive Integer Value Poser (in Just Math)
Posted on 2015-11-22 (1 Comments)
solution by xdog (2015-11-23 15:35:46)
Difficulty: 3 of 5Under 3c+2v (in Word Problems)
Posted on 2015-11-12 (3 Comments)
some by xdog (2015-11-12 11:10:21)
Difficulty: 2 of 5Under Count the palindromes (in Just Math)
Posted on 2015-11-11 (7 Comments)
non-counting part by xdog (2015-11-11 08:43:27)
Difficulty: 4 of 5Under Cons and vows (in Word Problems)
Posted on 2015-11-06 (6 Comments)
another by xdog (2015-11-07 11:47:41)
some by xdog (2015-11-06 19:49:20)
Difficulty: 2 of 5Under Zero mod 3 (in Just Math)
Posted on 2015-11-04 (1 Comments)
No Subject by xdog (2015-11-04 12:24:34)
Difficulty: 4 of 5Under Tacit series (in Sequences)
Posted on 2015-10-23 (2 Comments)
Hint by xdog (2015-10-23 18:44:51)
Difficulty: 2 of 5Under Factorizable Expressions (in Just Math)
Posted on 2015-10-21 (3 Comments)
another look by xdog (2015-10-23 08:56:40)
Difficulty: 3 of 5Under Sum Expression Value Determination (in Just Math)
Posted on 2015-10-18 (3 Comments)
another way by xdog (2015-10-19 11:00:48)
Difficulty: 3 of 5Under Oblong Difference Observation (in Just Math)
Posted on 2015-10-15 (3 Comments)
solution by xdog (2015-10-15 12:48:34)
Difficulty: 3 of 5Under Probability of constant leading (in Probability)
Posted on 2015-10-05 (5 Comments)
reference by xdog (2015-10-06 09:34:54)
Difficulty: 2 of 5Under Phrase find ponder (in Word Problems)
Posted on 2015-10-01 (6 Comments)
re(4): first undoubtedly incorrect thoughts by xdog (2015-10-02 09:44:34)
Difficulty: 2 of 5Under Black and white socks (in Probability)
Posted on 2015-09-29 (8 Comments)
surprises by xdog (2015-09-29 17:26:13)
Difficulty: 3 of 5Under Infinite Solution Settlement (in Just Math)
Posted on 2015-09-23 (1 Comments)
solution by xdog (2015-09-27 17:23:30)
Difficulty: 3 of 5Under Integer Pair and Infinite Puzzle (in Just Math)
Posted on 2015-09-20 (2 Comments)
I've got your cubes here, jer by xdog (2015-09-23 19:42:01)
Difficulty: 3 of 5Under Check divisibility (in Numbers)
Posted on 2015-09-16 (5 Comments)
analytical solution by xdog (2015-09-16 19:23:40)
Difficulty: 3 of 5Under Simultaneous Pythagorean Poser 2 (in Just Math)
Posted on 2015-09-05 (4 Comments)
Solution, with thanks to the classical Greeks by xdog (2015-09-05 15:53:14)
re: computer solution by xdog (2015-09-05 14:00:11)
Difficulty: 3 of 5Under Divide et impera part two (in Numbers)
Posted on 2015-08-26 (2 Comments)
solution by xdog (2015-08-26 18:26:37)
Difficulty: 2 of 5Under British wit (in General)
Posted on 2015-08-24 (1 Comments)
spoiler by xdog (2015-08-24 09:54:44)
Difficulty: 4 of 5Under Equal differences (in Numbers)
Posted on 2015-08-23 (1 Comments)
a start by xdog (2015-08-24 12:15:16)
Difficulty: 3 of 5Under Infinite Triplet and Perfect Square (in Just Math)
Posted on 2015-08-16 (3 Comments)
more Sloane by xdog (2015-08-20 09:23:33)
Difficulty: 3 of 5Under Positive Perfect Cube Sum (in Just Math)
Posted on 2015-08-15 (3 Comments)
solution by xdog (2015-08-18 23:46:46)
Difficulty: 3 of 5Under Non-perfect Cube Root Sum (in Just Math)
Posted on 2015-08-14 (6 Comments)
solution by xdog (2015-08-14 20:12:21)
Difficulty: 3 of 5Under Quadratic and Divisibility Puzzle (in Just Math)
Posted on 2015-08-09 (2 Comments)
a suggestive series by xdog (2015-08-09 16:46:19)
Difficulty: 3 of 5Under Real Number Resolution (in Just Math)
Posted on 2015-08-08 (2 Comments)
that's all by xdog (2015-08-09 09:34:19)
Difficulty: 3 of 5Under A ruler (in Word Problems)
Posted on 2015-08-05 (2 Comments)
hint by xdog (2015-08-05 11:53:15)
Difficulty: 3 of 5Under Consonants galore (in Word Problems)
Posted on 2015-08-04 (3 Comments)
suggestions by xdog (2015-08-04 19:20:26)
Difficulty: 3 of 5Under Factorial Ratio Sum Puzzle (in Calculus)
Posted on 2015-08-04 (3 Comments)
more demonstration than proof by xdog (2015-08-04 10:30:53)
Difficulty: 3 of 5Under Initial Term Identification (in Sequences)
Posted on 2015-07-21 (3 Comments)
Working from the other direction by xdog (2015-07-21 19:57:58)
Difficulty: 3 of 5Under Simultaneous Real Settlement (in Just Math)
Posted on 2015-07-20 (2 Comments)
solution by xdog (2015-07-21 11:27:32)
Difficulty: 3 of 5Under Simultaneous Pythagorean Poser (in Just Math)
Posted on 2015-07-04 (4 Comments)
solution by xdog (2015-07-04 11:53:12)
Difficulty: 4 of 5Under Just give it a trial (in General)
Posted on 2015-06-26 (3 Comments)
spoiler by xdog (2015-06-26 13:31:12)
Difficulty: 3 of 5Under Harmonic Diophantine Hindrance (in Just Math)
Posted on 2015-06-21 (3 Comments)
question re: Possible solution by xdog (2015-06-22 10:06:43)
Difficulty: 3 of 5Under Expression Quotient Puzzle (in Just Math)
Posted on 2015-06-16 (3 Comments)
analytical solution by xdog (2015-06-17 09:48:54)
Difficulty: 4 of 5Under No Unit Cube Dissection (in Shapes)
Posted on 2015-06-11 (7 Comments)
first observations by xdog (2015-06-12 12:23:57)
Difficulty: 3 of 5Under Three Quotients and Integer Puzzle (in Just Math)
Posted on 2015-06-03 (4 Comments)
error by xdog (2015-06-03 18:39:48)
solution by xdog (2015-06-03 11:41:28)
Difficulty: 4 of 5Under Just vowels (in General)
Posted on 2015-05-29 (9 Comments)
No Subject by xdog (2015-05-29 20:46:54)
Difficulty: 3 of 5Under Sum Root Sum Settlement (in Just Math)
Posted on 2015-05-10 (5 Comments)
Question re: No Subject by xdog (2015-05-11 12:02:32)
Difficulty: 3 of 5Under Positive Pair Poser (in Just Math)
Posted on 2015-05-09 (8 Comments)
No Subject by xdog (2015-05-11 10:35:21)
solution by xdog (2015-05-10 14:33:17)
Difficulty: 3 of 5Under Rational Square Sum (in Just Math)
Posted on 2015-05-07 (5 Comments)
re: Fixing the prior proof (spoiler) by xdog (2015-05-07 20:09:23)
No Subject by xdog (2015-05-07 13:53:09)
Difficulty: 3 of 5Under Real Functions Determination (in Just Math)
Posted on 2015-05-02 (4 Comments)
re(2): Determined Function (spoiler) by xdog (2015-05-02 15:03:38)
solution by xdog (2015-05-02 11:19:14)
Difficulty: 3 of 5Under Relationship Satisfaction Settlement (in Just Math)
Posted on 2015-05-01 (1 Comments)
solution by xdog (2015-05-03 19:14:28)
Difficulty: 3 of 5Under Polynomial problem (in Just Math)
Posted on 2015-03-22 (2 Comments)
oddly enough by xdog (2015-03-22 15:35:27)
Difficulty: 2 of 5Under Minimizing Perimeter (in Shapes)
Posted on 2015-03-04 (15 Comments)
re(4): NO DICE.....not a spoiler by xdog (2015-03-06 07:48:35)
Difficulty: 3 of 5Under Contradict Goldbach (in Numbers)
Posted on 2015-03-03 (2 Comments)
Spoiler by xdog (2015-03-03 11:38:24)
Difficulty: 2 of 5Under Not too much (in Numbers)
Posted on 2015-02-20 (8 Comments)
re: no ! - partial spoiler by xdog (2015-02-20 13:35:46)
spoiler and telescoping sums by xdog (2015-02-20 10:00:18)
Difficulty: 2 of 5Under Phrase a question I (in Numbers)
Posted on 2015-02-16 (2 Comments)
No Subject by xdog (2015-02-16 08:21:11)
Difficulty: 3 of 5Under An ancient Egyptian problem (in Just Math)
Posted on 2015-02-13 (5 Comments)
info on problem history by xdog (2015-02-14 12:41:08)
Difficulty: 2 of 5Under Integer Triplets with a Difference (in Numbers)
Posted on 2015-01-30 (6 Comments)
re: 2nd triplet by xdog (2015-01-30 08:51:03)
Difficulty: 2 of 5Under Observe and prove (in Just Math)
Posted on 2015-01-26 (1 Comments)
spoiler by xdog (2015-01-26 11:59:09)
Difficulty: 1 of 5Under Not hehe (in Word Problems)
Posted on 2015-01-21 (5 Comments)
No Subject by xdog (2015-01-21 12:06:03)
Difficulty: 3 of 5Under Paramount Polygon Poser (in Shapes)
Posted on 2015-01-15 (3 Comments)
solution by xdog (2015-01-15 10:52:06)
Difficulty: 4 of 5Under T times T creates another T?? (in Just Math)
Posted on 2015-01-11 (8 Comments)
No solution, maybe just an interesting byway by xdog (2015-01-12 15:17:01)
Difficulty: 3 of 5Under Find the remainder (in Just Math)
Posted on 2015-01-09 (3 Comments)
No Subject by xdog (2015-01-09 10:56:25)
Difficulty: 3 of 5Under Same Count, Same Sum (in Just Math)
Posted on 2015-01-06 (1 Comments)
spoiler by xdog (2015-01-06 14:21:57)
Difficulty: 3 of 5Under Complex Conclusion II (in Just Math)
Posted on 2014-11-08 (2 Comments)
re: Solution by xdog (2014-11-11 17:02:05)
Difficulty: 2 of 5Under Get them up (in Just Math)
Posted on 2014-10-01 (5 Comments)
Satisfying indeed. by xdog (2014-10-02 10:25:29)
Difficulty: 3 of 5Under Distinct Value Deduction (in Just Math)
Posted on 2014-09-14 (7 Comments)
possible solution by xdog (2014-09-15 13:04:35)
Difficulty: 2 of 5Under Stranger Danger (in Famous Riddles)
Posted on 2014-08-25 (1 Comments)
answer to gruesome problem by xdog (2014-08-25 11:43:06)
Difficulty: 3 of 5Under Tiling Trial II (in Shapes)
Posted on 2014-08-06 (4 Comments)
re: Possible spoiler by xdog (2014-08-07 10:26:58)
Difficulty: 3 of 5Under An equation (in Just Math)
Posted on 2014-07-03 (5 Comments)
re(2): solution by xdog (2014-07-14 10:33:23)
solution by xdog (2014-07-13 10:40:04)
Difficulty: 2 of 5Under Odd and Even (in Just Math)
Posted on 2014-04-23 (3 Comments)
re: corrected and solved by xdog (2014-04-23 11:00:18)
Difficulty: 3 of 5Under Mean Muse (in Just Math)
Posted on 2014-04-18 (1 Comments)
solution by xdog (2014-04-21 12:41:00)
Difficulty: 2 of 5Under Neighbors (in Numbers)
Posted on 2014-04-18 (8 Comments)
four more by xdog (2014-04-18 10:40:21)
solution by xdog (2014-04-18 10:29:22)
Difficulty: 3 of 5Under Fold Judgement II (in Shapes)
Posted on 2014-04-01 (6 Comments)
re(2): different value by xdog (2014-04-02 07:59:36)
different value by xdog (2014-04-01 21:05:44)
Difficulty: 3 of 5Under Primes vs ones (in Numbers)
Posted on 2014-03-27 (2 Comments)
Another proof by xdog (2014-03-28 16:01:57)
Difficulty: 3 of 5Under Prime Equation (in Just Math)
Posted on 2014-03-12 (4 Comments)
solution by xdog (2014-03-12 16:58:59)
Difficulty: 2 of 5Under Card game III (in Logic)
Posted on 2014-03-04 (5 Comments)
No Subject by xdog (2014-03-04 10:27:23)
Difficulty: 3 of 5Under Some Powers Sum Square II (in Just Math)
Posted on 2013-12-18 (2 Comments)
too much nog, not enough egg by xdog (2014-01-01 05:30:33)
solution and happy new year by xdog (2014-01-01 01:25:20)
Difficulty: 2 of 5Under Last but not the least (in Numbers)
Posted on 2013-12-12 (8 Comments)
re(3): All things being equal ... (spoiler) by xdog (2013-12-12 18:19:21)
re: All things being equal ... (spoiler) by xdog (2013-12-12 10:58:22)
Difficulty: 3 of 5Under A Square, a Rectangle and a Triangle (in Geometry)
Posted on 2013-11-17 (3 Comments)
disagree by xdog (2013-11-18 19:33:32)
Difficulty: 2 of 5Under Four Egyptian Fractions (in Numbers)
Posted on 2013-11-13 (6 Comments)
typos and omissions by xdog (2013-11-13 12:27:05)
Difficulty: 3 of 5Under Consecutive Additions (in Numbers)
Posted on 2013-11-12 (6 Comments)
solution to part 1. by xdog (2013-11-14 23:06:01)
Difficulty: 3 of 5Under As easy as 123 (in Numbers)
Posted on 2013-10-25 (1 Comments)
Solution/spoiler by xdog (2013-10-25 10:51:22)
Difficulty: 3 of 5Under Take the right one (in Weights and Scales)
Posted on 2013-10-18 (18 Comments)
Think I've got it by xdog (2013-10-20 13:24:15)
question for Tristan by xdog (2013-10-19 21:35:46)
reply to Tristan by xdog (2013-10-19 10:42:40)
Solution by xdog (2013-10-18 23:21:40)
question for Kenny by xdog (2013-10-18 21:27:49)
Difficulty: 2 of 5Under Quintic Expression (in Just Math)
Posted on 2013-10-09 (8 Comments)
No Subject by xdog (2013-10-12 23:54:12)
Difficulty: 3 of 5Under Powering (in Just Math)
Posted on 2013-10-05 (5 Comments)
this does it by xdog (2013-10-07 12:21:31)
Difficulty: 3 of 5Under Big areas (in Numbers)
Posted on 2013-09-17 (16 Comments)
quick observations by xdog (2013-09-17 17:56:04)
Difficulty: 3 of 5Under Staggered divisibility (in Numbers)
Posted on 2013-09-16 (3 Comments)
spoiler by xdog (2013-09-16 11:35:56)
Difficulty: 3 of 5Under Supreme Value Validation (in Just Math)
Posted on 2013-09-08 (3 Comments)
Different approach, different answer by xdog (2013-09-09 00:16:00)
Difficulty: 2 of 5Under The Last Two Digits (in Just Math)
Posted on 2013-09-04 (3 Comments)
another way by xdog (2013-09-04 12:22:43)
Difficulty: 4 of 5Under Expression Ratio (in Just Math)
Posted on 2013-09-03 (4 Comments)
interesting by xdog (2013-09-03 20:55:27)
Difficulty: 2 of 5Under How many children? (in Just Math)
Posted on 2013-09-02 (5 Comments)
spoiler by xdog (2013-09-02 11:42:38)
Difficulty: 2 of 5Under All zeroes solution (in Numbers)
Posted on 2013-09-01 (3 Comments)
another by xdog (2013-09-02 11:19:26)
Difficulty: 3 of 5Under Z for Zero, X for siX (in Just Math)
Posted on 2013-08-22 (4 Comments)
reply to Ady by xdog (2013-08-26 00:39:13)
spoiler by xdog (2013-08-22 10:48:02)
Difficulty: 2 of 5Under Habeas corpus (in Word Problems)
Posted on 2013-08-14 (1 Comments)
Here are ten by xdog (2013-08-14 10:25:26)
Difficulty: 2 of 5Under An Elusive Quadratic (in Numbers)
Posted on 2013-08-09 (2 Comments)
No Subject by xdog (2013-08-16 11:54:48)
Difficulty: 2 of 5Under Any others? (in Numbers)
Posted on 2013-06-18 (9 Comments)
reply to broll by xdog (2013-06-22 09:58:53)
No Subject by xdog (2013-06-21 10:59:46)
Difficulty: 3 of 5Under You & you (in Word Problems)
Posted on 2013-05-30 (6 Comments)
No Subject by xdog (2013-05-30 12:21:37)
Difficulty: 4 of 5Under UVWXYZ (in Just Math)
Posted on 2013-05-27 (12 Comments)
re(2): No Subject by xdog (2013-05-28 15:20:32)
No Subject by xdog (2013-05-28 10:05:12)
An approach, no guarantee by xdog (2013-05-27 16:11:43)
Difficulty: 3 of 5Under Mating Moves (in Games)
Posted on 2013-05-17 (3 Comments)
Minimum matched by xdog (2013-05-20 13:28:37)
Solution with 7 pieces by xdog (2013-05-20 12:56:57)
Solution with 8 pieces by xdog (2013-05-20 00:34:15)
Difficulty: 2 of 5Under Fifthing the quart (in Just Math)
Posted on 2013-04-28 (2 Comments)
re: Some (all?) by xdog (2013-05-01 19:24:27)
Difficulty: 3 of 5Under Dark Divisibility (in Just Math)
Posted on 2013-04-27 (18 Comments)
No Subject by xdog (2013-04-27 14:00:07)
Difficulty: 3 of 5Under The Seven Primes (in Just Math)
Posted on 2013-04-26 (2 Comments)
analytical solution by xdog (2013-04-26 21:16:45)
Difficulty: 3 of 5Under Poker Precept (in Logic)
Posted on 2013-04-19 (4 Comments)
solution by xdog (2013-04-19 15:45:27)
Difficulty: 3 of 5Under Equilateral Crease (in Shapes)
Posted on 2013-04-13 (4 Comments)
Solution with explicit values by xdog (2013-04-16 13:58:26)
Difficulty: 1 of 5Under In camps about the centre I appear (in Famous Riddles)
Posted on 2013-03-20 (3 Comments)
Spoiler by xdog (2013-03-20 15:39:43)
Difficulty: 4 of 5Under UN cargo (in Numbers)
Posted on 2013-03-13 (9 Comments)
No Subject by xdog (2013-03-13 22:20:38)
Difficulty: 3 of 5Under Strange Equation (in Just Math)
Posted on 2013-03-11 (10 Comments)
re(2): solution by xdog (2013-03-15 11:53:51)
solution by xdog (2013-03-14 15:27:43)
Difficulty: 2 of 5Under Magical Magician (in Numbers)
Posted on 2013-02-23 (6 Comments)
spoiler by xdog (2013-02-23 15:45:22)
Difficulty: 2 of 5Under Not represented (in Numbers)
Posted on 2013-02-20 (4 Comments)
partial spoiler by xdog (2013-02-20 10:35:48)
Difficulty: 3 of 5Under Composite Contemplation (in Just Math)
Posted on 2013-02-16 (3 Comments)
spoiler by xdog (2013-02-17 15:35:12)
Difficulty: 3 of 5Under Primed to Square (in Just Math)
Posted on 2013-02-15 (3 Comments)
spoiler by xdog (2013-02-15 20:12:31)
Difficulty: 3 of 5Under Finding numbers (in Numbers)
Posted on 2013-02-12 (2 Comments)
Confirming solutions by xdog (2013-02-13 00:14:32)
Difficulty: 3 of 5Under Egyptian Number (in Just Math)
Posted on 2013-02-09 (5 Comments)
Lucky numbers? by xdog (2013-02-10 19:19:07)
Difficulty: 3 of 5Under Sum of real Roots (in Just Math)
Posted on 2013-01-27 (6 Comments)
Agreement by xdog (2013-01-28 12:52:47)
Difficulty: 3 of 5Under Cute Divisibility (in Numbers)
Posted on 2013-01-26 (2 Comments)
other thoughts by xdog (2013-01-27 11:34:31)
Difficulty: 3 of 5Under Some basic Maths (in Just Math)
Posted on 2013-01-19 (2 Comments)
solution by xdog (2013-01-19 16:05:58)
Difficulty: 2 of 5Under Off by one (in Numbers)
Posted on 2013-01-18 (7 Comments)
solving mod 1001 by xdog (2013-01-19 15:53:15)
Difficulty: 2 of 5Under Shakespearean Subsumption (in Word Problems)
Posted on 2013-01-16 (3 Comments)
Spoiler by xdog (2013-01-16 17:53:58)
Difficulty: 3 of 5Under Rooting for Three Roots (in Just Math)
Posted on 2012-12-23 (3 Comments)
agree, but . . . by xdog (2012-12-23 22:24:49)
Difficulty: 3 of 5Under Inequality in sums of digits (in Just Math)
Posted on 2012-12-17 (1 Comments)
quick observation by xdog (2012-12-17 10:44:38)
Difficulty: 2 of 5Under No integer solutions (in Just Math)
Posted on 2012-12-10 (4 Comments)
slower this time by xdog (2012-12-10 20:15:42)
Solution/spoiler by xdog (2012-12-10 16:11:43)
Difficulty: 4 of 5Under MAX octagonal area (in Shapes)
Posted on 2012-11-28 (2 Comments)
Different approach, same answer by xdog (2012-11-28 22:01:43)
Difficulty: 3 of 5Under 2-way traffic (in Word Problems)
Posted on 2012-11-14 (7 Comments)
No Subject by xdog (2012-11-15 19:49:53)
Difficulty: 2 of 5Under Gender and Occupation (in Logic)
Posted on 2012-10-22 (6 Comments)
re(2): spoiler by xdog (2012-10-22 17:30:28)
spoiler by xdog (2012-10-22 11:57:02)
Difficulty: 3 of 5Under Odd One Out III (in Word Problems)
Posted on 2012-08-15 (14 Comments)
another maybe by xdog (2012-08-17 12:23:04)
I'm not a cook by xdog (2012-08-15 22:15:58)
more maybe by xdog (2012-08-15 13:55:45)
Difficulty: 3 of 5Under Ready, actionů,CUT! (in Geometry)
Posted on 2012-05-16 (19 Comments)
re(2): hands on WRONG by xdog (2012-05-17 09:37:35)
hands on by xdog (2012-05-17 00:24:15)
Difficulty: 3 of 5Under Regular Tetrahedron 1234 (in Shapes)
Posted on 2012-03-08 (8 Comments)
No Subject by xdog (2012-03-09 20:47:17)
re: Is it possible? by xdog (2012-03-09 20:25:29)
Difficulty: 3 of 5Under Prime-go-round (in Numbers)
Posted on 2012-02-06 (2 Comments)
Near misses -- Nihil ! by xdog (2012-02-07 20:02:26)
Difficulty: 3 of 5Under Who stole the Perplexicon? (in Liars and Knights)
Posted on 2012-01-11 (8 Comments)
solution/spoiler by xdog (2012-01-11 15:36:03)
Difficulty: 3 of 5Under Fermat simplified (in Just Math)
Posted on 2011-06-21 (2 Comments)
Solution -- Spoiler by xdog (2011-06-21 14:39:20)
Difficulty: 3 of 5Under Missing digits (in Just Math)
Posted on 2011-06-06 (8 Comments)
D5 by hand by xdog (2011-06-06 21:59:04)
D3-1 by hand by xdog (2011-06-06 20:30:40)
D3-2 by hand by xdog (2011-06-06 19:37:45)
Difficulty: 3 of 5Under Many triplets II (in Just Math)
Posted on 2011-05-07 (4 Comments)
Question question by xdog (2011-05-10 00:33:18)
Difficulty: 1 of 5Under Mission impossible (in Just Math)
Posted on 2011-04-18 (2 Comments)
solution (spoiler) by xdog (2011-04-18 12:29:14)
Difficulty: 1 of 5Under Odd and Integer Zeros (in Just Math)
Posted on 2011-04-13 (4 Comments)
even odds (spoiler) by xdog (2011-04-13 18:14:00)
Difficulty: 3 of 5Under Find the area (in Numbers)
Posted on 2011-04-08 (5 Comments)
spoiler by xdog (2011-04-08 16:37:21)
Difficulty: 3 of 5Under Divisibility to square (in Just Math)
Posted on 2011-03-05 (4 Comments)
re: Do any exist? by xdog (2011-03-09 10:51:09)
Difficulty: 5 of 5Under How far can you go? (in Numbers)
Posted on 2011-03-04 (11 Comments)
and with 3 by xdog (2011-03-04 15:57:06)
Solution starting with 2 by xdog (2011-03-04 14:13:30)
Difficulty: 3 of 5Under Short and sweet (in Numbers)
Posted on 2011-02-21 (4 Comments)
spoiler by xdog (2011-02-23 18:48:46)
Difficulty: 3 of 5Under a) is easy, b) is not (in Just Math)
Posted on 2011-02-18 (8 Comments)
solution to b from OEIS by xdog (2011-02-18 17:54:39)
Difficulty: 3 of 5Under Reloading the Dice (in Probability)
Posted on 2011-01-20 (10 Comments)
proof of no exact solution by xdog (2011-01-21 12:47:56)
Difficulty: 2 of 5Under Fermat+1 (in Numbers)
Posted on 2010-12-22 (3 Comments)
A start by xdog (2010-12-27 10:38:26)
Difficulty: 2 of 5Under Odd One Out (in Word Problems)
Posted on 2010-11-10 (10 Comments)
A solution by xdog (2010-11-10 12:03:39)
Difficulty: 3 of 5Under Look for the pairs (in Just Math)
Posted on 2010-10-15 (3 Comments)
Solution, I think by xdog (2010-10-15 14:34:46)
Difficulty: 2 of 5Under TriNRect (in Just Math)
Posted on 2010-10-13 (3 Comments)
Thanks by xdog (2010-10-14 20:45:33)
solution by xdog (2010-10-14 13:28:29)
Difficulty: 2 of 5Under Many triplets (in Just Math)
Posted on 2010-05-10 (6 Comments)
another solution set by xdog (2010-05-10 14:15:00)
Difficulty: 2 of 5Under Four + Five = Nine (in Numbers)
Posted on 2009-07-26 (2 Comments)
Answer by xdog (2009-07-26 16:19:23)
Difficulty: 2 of 5Under ten - nine = 1 (in Numbers)
Posted on 2009-04-23 (4 Comments)
solution by xdog (2009-04-23 13:47:31)
Difficulty: 3 of 5Under Factorials and Powers (in Just Math)
Posted on 2009-04-22 (8 Comments)
Thanks for your post, Harry by xdog (2009-04-24 17:52:57)
Difficulty: 2 of 5Under The box (in Just Math)
Posted on 2009-01-02 (7 Comments)
Solution spoiler--all solutions by xdog (2009-01-05 00:45:29)
Difficulty: 2 of 5Under Four special natural numbers (in Just Math)
Posted on 2008-12-11 (8 Comments)
a start by xdog (2008-12-11 22:16:25)
Difficulty: 3 of 5Under Triangle Area (in Geometry)
Posted on 2008-11-28 (11 Comments)
solution barring algebraic screw-up by xdog (2008-11-30 23:05:24)
Difficulty: 2 of 5Under All divisible by 7 (in Just Math)
Posted on 2008-11-04 (8 Comments)
proof by xdog (2008-11-04 14:40:41)
Difficulty: 2 of 5Under The mouse and the cheese (in Probability)
Posted on 2008-09-11 (4 Comments)
re: solution by xdog (2008-09-11 15:54:14)
solution by xdog (2008-09-11 12:17:51)
Difficulty: 3 of 5Under Some Reals Sum Integer (in Just Math)
Posted on 2008-08-07 (3 Comments)
Spoiler by xdog (2008-08-08 21:12:39)
Difficulty: 2 of 5Under Product 2 Power Not (in Just Math)
Posted on 2008-07-12 (6 Comments)
like it by xdog (2008-07-12 22:37:13)
Difficulty: 3 of 5Under Some Powers Sum Square (in Just Math)
Posted on 2008-07-04 (10 Comments)
rats by xdog (2008-07-04 23:34:26)
A084703 by xdog (2008-07-04 21:54:02)
No Subject by xdog (2008-07-04 21:41:50)
Difficulty: 3 of 5Under The missing piece (chess) (in Games)
Posted on 2008-06-12 (15 Comments)
spoiler by xdog (2008-06-12 16:46:48)
Difficulty: 3 of 5Under One More Factor, Please (in Numbers)
Posted on 2008-03-23 (5 Comments)
one solution by xdog (2008-03-23 12:51:04)
Difficulty: 3 of 5Under Getting Four-Six With Nine Digits (in Numbers)
Posted on 2008-03-16 (9 Comments)
correction to last post by xdog (2008-03-17 10:41:06)
No Subject by xdog (2008-03-17 09:59:32)
Difficulty: 3 of 5Under Equate To - 8, Get Roots (in Just Math)
Posted on 2008-02-02 (6 Comments)
disregard previous post by xdog (2008-02-02 21:04:57)
oversight by xdog (2008-02-02 20:04:30)
Difficulty: 2 of 5Under Getting Primed With Subtraction And Addition (in Just Math)
Posted on 2007-12-26 (5 Comments)
solution/spoiler by xdog (2007-12-26 12:28:44)
Difficulty: 4 of 5Under Product Four Times Sum (in Numbers)
Posted on 2007-11-23 (5 Comments)
solution by xdog (2007-11-24 13:22:23)
Difficulty: 3 of 5Under Getting Squared With 1 And 16 (in Just Math)
Posted on 2007-09-01 (5 Comments)
Some observations. by xdog (2007-09-04 17:06:12)
Difficulty: 2 of 5Under Getting Primes With 2 And 4 (in Numbers)
Posted on 2007-08-19 (6 Comments)
Charlie, not Charley by xdog (2007-08-20 09:26:41)
solution/spoilers by xdog (2007-08-19 19:31:22)
Difficulty: 4 of 5Under Add To Cube, Get Square? (in Numbers)
Posted on 2007-08-03 (4 Comments)
second step by xdog (2007-08-03 19:27:45)
first step by xdog (2007-08-03 10:55:31)
Difficulty: 3 of 5Under Subtract The Cubics, Get Product (in Just Math)
Posted on 2007-07-22 (5 Comments)
No Subject by xdog (2007-07-23 08:18:04)
solution by xdog (2007-07-22 20:36:32)
Difficulty: 2 of 5Under Subtract From Sum And Multiply, Get Number(s) (in Just Math)
Posted on 2007-07-19 (3 Comments)
re: Solution by xdog (2007-07-19 22:13:14)
Difficulty: 2 of 5Under Winter Reigns (in General)
Posted on 2007-07-02 (5 Comments)
spoiler by xdog (2007-07-02 11:48:05)
Difficulty: 3 of 5Under Powerful Sum? (in Numbers)
Posted on 2007-06-23 (4 Comments)
solution for perfect even powers by xdog (2007-06-28 21:00:43)
re(2): No Subject by xdog (2007-06-28 17:12:15)
No Subject by xdog (2007-06-25 08:45:46)
Difficulty: 2 of 5Under Take Biquadratic, Get Prime (in Numbers)
Posted on 2007-06-10 (1 Comments)
solution by xdog (2007-06-11 10:54:54)
Difficulty: 2 of 5Under Take Second Degree, Solve For Real (in Just Math)
Posted on 2007-04-27 (4 Comments)
solution by xdog (2007-04-27 10:59:26)
Difficulty: 4 of 5Under A Point in a Triangle (in Geometry)
Posted on 2007-04-12 (8 Comments)
on another look by xdog (2007-04-13 08:35:48)
Difficulty: 3 of 5Under Close to Fermat (in Numbers)
Posted on 2007-04-06 (4 Comments)
solution by xdog (2007-04-09 08:27:10)
Difficulty: 3 of 5Under How many oranges? (in Numbers)
Posted on 2007-03-22 (6 Comments)
spoiler by xdog (2007-03-22 15:14:09)
Difficulty: 2 of 5Under Basic Factoring (in Just Math)
Posted on 2007-03-21 (4 Comments)
solution by xdog (2007-03-22 09:53:51)
Difficulty: 2 of 5Under An Integer Root Problem (in Just Math)
Posted on 2006-11-17 (2 Comments)
solution by xdog (2006-11-17 11:25:23)
Difficulty: 3 of 5Under No rows (in Games)
Posted on 2006-10-24 (17 Comments)
re(2): No Subject - doesn't work by xdog (2006-10-24 11:26:39)
No Subject by xdog (2006-10-24 10:49:39)
Difficulty: 2 of 5Under Another 2006 Problem (in Just Math)
Posted on 2006-09-30 (8 Comments)
re: Solution by xdog (2006-09-30 12:50:54)
Difficulty: 3 of 5Under A Composite Determination Problem (in Just Math)
Posted on 2006-04-23 (14 Comments)
No Subject by xdog (2006-04-28 09:42:30)
re(2): A first stab at the solution by xdog (2006-04-27 16:17:13)
Difficulty: 2 of 5Under Find just one digit (in Numbers)
Posted on 2005-11-10 (13 Comments)
solution by xdog (2005-11-10 09:15:33)
Difficulty: 3 of 5Under The least square (in Just Math)
Posted on 2005-11-05 (11 Comments)
pc by xdog (2005-11-16 07:16:10)
No Subject by xdog (2005-11-15 09:25:46)
Solution by xdog (2005-11-09 15:16:04)
Difficulty: 4 of 5Under Get one half by squaring (in Just Math)
Posted on 2004-09-20 (31 Comments)
You're right, David by xdog (2004-09-20 20:52:30)
No Subject by xdog (2004-09-20 18:25:08)
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