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Difficulty: 3 of 5Under Same side story (in Probability)
Posted on 2017-03-16 (5 Comments)
Corrected solution by Dan Rosen (2017-03-28 23:24:18)
Solution Solution by Dan Rosen (2017-03-28 14:05:20)
Difficulty: 2 of 5Under Weight Limited Bridge (in General)
Posted on 2016-08-01 (6 Comments)
solution by Dan Rosen (2016-08-04 07:46:09)
Difficulty: 3 of 5Under Asteroid walk (in General)
Posted on 2016-04-19 (8 Comments)
Meaning of "walking forward upon the surface of a sphere by Dan Rosen (2016-04-28 04:39:05)
Difficulty: 4 of 5Under Detect my chosen coin (in Games)
Posted on 2016-01-19 (19 Comments)
Solution The egg of Colubus by Dan Rosen (2016-01-26 04:48:40)
Difficulty: 2 of 5Under Guessing suit (in Probability)
Posted on 2015-07-20 (13 Comments)
senseless task ! by Dan Rosen (2015-07-20 11:06:11)
Difficulty: 4 of 5Under Bean coloring (in Probability)
Posted on 2015-07-13 (11 Comments)
Solution Final correction of analytical solution by Dan Rosen (2015-07-16 00:57:58)
re:Correcting My previous analytical solution by Dan Rosen (2015-07-15 09:03:13)
Solution Analytical solution by Dan Rosen (2015-07-14 04:18:16)
Difficulty: 3 of 5Under Maximizing product (in Geometry)
Posted on 2013-09-19 (4 Comments)
Final Correction !! by Dan Rosen (2013-09-25 11:54:07)
corrected solution by Dan Rosen (2013-09-24 13:53:13)
Solution solution by Dan Rosen (2013-09-22 13:36:57)
Difficulty: 4 of 5Under Introductions all around (in General)
Posted on 2013-06-14 (8 Comments)
re(3): Solution by Dan Rosen (2013-06-22 12:55:03)
re(2): Solution by Dan Rosen (2013-06-22 12:51:32)
re: Solution by Dan Rosen (2013-06-22 09:10:40)
Solution Solution by Dan Rosen (2013-06-22 07:26:56)
Difficulty: 3 of 5Under A blue taxi II (in Probability)
Posted on 2013-03-08 (4 Comments)
re Chrlarlie's comment by Dan Rosen (2013-03-13 09:40:58)
Solution- independent of n by Dan Rosen (2013-03-13 08:02:48)
Difficulty: 4 of 5Under Creeping Ants (in Probability)
Posted on 2012-11-21 (3 Comments)
Continuing Charlie's analysis by Dan Rosen (2013-05-12 16:40:37)
Difficulty: 3 of 5Under Extraordinary Characteristics (in Logic)
Posted on 2012-11-06 (4 Comments)
Solution Solution by Dan Rosen (2012-11-09 08:06:47)
Difficulty: 3 of 5Under Find Formula (in Sequences)
Posted on 2012-02-17 (4 Comments)
Find Formula Solution by Dan Rosen (2012-02-19 09:29:55)
Difficulty: 2 of 5Under Inflation or deflation? (in General)
Posted on 2011-07-25 (3 Comments)
Solution 75 cents difference by Dan Rosen (2011-07-26 03:54:43)
Difficulty: 3 of 5Under All or Exactly Two (in Geometry)
Posted on 2011-03-27 (5 Comments)
Solution Simpler Solution by Dan Rosen (2011-03-29 06:22:40)
Difficulty: 2 of 5Under Pandigital and divisible (in Probability)
Posted on 2010-12-26 (4 Comments)
Solution Correction of analytical solution by Dan Rosen (2011-04-01 23:20:55)
Solution Analytical Solution by Dan Rosen (2011-04-01 11:37:56)
Difficulty: 4 of 5Under Rolling to score (in Probability)
Posted on 2010-11-15 (17 Comments)
Solution re (4) contradicting the contradiction ! by Dan Rosen (2011-04-03 05:18:46)
re (3) Solution contradicting ... by Dan Rosen (2011-04-02 19:35:12)
Solution Solution contradicting all previous ones by Dan Rosen (2011-04-02 15:58:33)
Difficulty: 1 of 5Under A Magic Die (in Probability)
Posted on 2010-06-10 (8 Comments)
Solution Magic die solution by Dan Rosen (2010-06-16 13:27:01)
Difficulty: 3 of 5Under Wins 2 - wins all (in Probability)
Posted on 2010-05-06 (5 Comments)
Solution Wins 2 - Wins all by Dan Rosen (2010-05-20 12:07:56)
Difficulty: 3 of 5Under All the colors in (in Probability)
Posted on 2010-04-26 (22 Comments)
All the colors solution by Dan Rosen (2010-06-16 12:41:08)
Difficulty: 3 of 5Under Matching Matchbox Muse (in Probability)
Posted on 2010-03-30 (15 Comments)
re(5): Corrected Solution after Charlie's comments by Dan Rosen (2010-07-20 14:37:31)
re(2): Corrected Solution after Charlie's comments by Dan Rosen (2010-07-01 18:52:42)
Solution Corrected Solution after Charlie's comments by Dan Rosen (2010-06-29 15:00:37)
Solution New print out of previous solution by Dan Rosen (2010-06-28 18:31:39)
re Charlie's solution by Dan Rosen (2010-06-28 18:13:10)
Solution Solution by Dan Rosen (2010-06-11 15:44:29)
Difficulty: 2 of 5Under Believe it or not (in General)
Posted on 2003-03-25 (27 Comments)
The sun will rise by Dan Rosen (2010-06-16 12:51:52)
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