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Difficulty: 3 of 5Face up Poker (in Games) Rating: 1.00
Posted on 2007-06-04 by e.g. (No Solution Yet, 8 Comments)
Difficulty: 3 of 5Alternating sextet (in Sequences)
Posted on 2007-03-30 by e.g. (No Solution Yet, 6 Comments)
Difficulty: 2 of 5Chop it off (in Numbers) Rating: 3.00
Posted on 2007-03-27 by e.g. (No Solution Yet, 5 Comments)
Difficulty: 3 of 5A problem to end all shift-a-digit problems (in Numbers)
Posted on 2007-03-26 by e.g. (Solution Posted, 2 Comments)
Difficulty: 2 of 5A horse of a different color (in Liars and Knights) Rating: 3.50
Posted on 2006-09-26 by e.g. (Solution Posted, 20 Comments)
Difficulty: 4 of 5Summing or Multiplying (in Numbers) Rating: 4.25
Posted on 2006-08-21 by e.g. (Solution Posted, 20 Comments)
Difficulty: 1 of 5What do I save? (in General) Rating: 3.50
Posted on 2006-08-11 by e.g. (Solution Posted, 6 Comments)
Difficulty: 2 of 5To qualify, or not to qualify (in General) Rating: 2.25
Posted on 2006-07-24 by e.g. (Solution Posted, 6 Comments)
Difficulty: 3 of 5Calling all pythagoreans (in Geometry)
Posted on 2006-07-03 by e.g. (Solution Posted, 7 Comments)
Difficulty: 4 of 5Pick two numbers! (in General) Rating: 3.89
Posted on 2005-11-22 by e.g. (Solution Posted, 15 Comments)
Difficulty: 4 of 5Strange sequence (in Calculus) Rating: 3.17
Posted on 2005-11-15 by e.g. (Solution Posted, 9 Comments)
Difficulty: 2 of 5Scratch a Home Run! (in Probability) Rating: 2.00
Posted on 2005-10-18 by e.g. (Solution Posted, 8 Comments)
Difficulty: 3 of 5Who's on first? (in General) Rating: 3.67
Posted on 2005-10-15 by e.g. (Solution Posted, 5 Comments)
Difficulty: 3 of 5Odd people (in Liars and Knights) Rating: 4.44
Posted on 2005-09-12 by e.g. (Solution Posted, 13 Comments)
Difficulty: 3 of 5Sorta pythagoric... (in Numbers) Rating: 3.00
Posted on 2005-09-01 by e.g. (Solution Posted, 16 Comments)
Difficulty: 2 of 5Two rights out of 24 wrongs (in General) Rating: 3.30
Posted on 2005-07-27 by e.g. (Solution Posted, 11 Comments)
Difficulty: 1 of 5Yeah, yeah, yeah -- aye? (in General) Rating: 2.50
Posted on 2005-06-29 by e.g. (Solution Posted, 7 Comments)
Difficulty: 3 of 5A classic game (in Numbers) Rating: 3.00
Posted on 2005-06-22 by e.g. (Solution Posted, 9 Comments)
Difficulty: 4 of 5A repeating irrational number? (in Just Math) Rating: 3.17
Posted on 2005-06-06 by e.g. (Solution Posted, 7 Comments)
Difficulty: 1 of 5At the Airport (in Word Problems) Rating: 2.33
Posted on 2005-05-19 by e.g. (Solution Posted, 13 Comments)
Difficulty: 2 of 5Extend, at the end (in Sequences) Rating: 4.17
Posted on 2005-05-04 by e.g. (Solution Posted, 9 Comments)
Difficulty: 2 of 5Go for short! (in Numbers) Rating: 2.00
Posted on 2005-04-19 by e.g. (Solution Posted, 8 Comments)
Difficulty: 2 of 5Maximum impossible score (in Games) Rating: 4.00
Posted on 2005-04-10 by e.g. (Solution Posted, 3 Comments)
Difficulty: 2 of 5Black ants marching (in Riddles) Rating: 2.73
Posted on 2005-03-31 by e.g. (Solution Posted, 23 Comments)
Difficulty: 2 of 5Roulette (in Probability) Rating: 4.50
Posted on 2005-03-23 by e.g. (Solution Posted, 4 Comments)
Difficulty: 3 of 5Power inequality (in Just Math) Rating: 3.00
Posted on 2005-03-15 by e.g. (Solution Posted, 18 Comments)
Difficulty: 3 of 5Fibonacci Fractions (in Just Math) Rating: 3.00
Posted on 2005-03-09 by e.g. (Solution Posted, 17 Comments)
Difficulty: 2 of 5Magic constant (in Numbers) Rating: 1.75
Posted on 2005-02-23 by e.g. (Solution Posted, 5 Comments)
Difficulty: 4 of 5Whadduzitdo? (in Algorithms) Rating: 3.71
Posted on 2005-01-14 by e.g. (Solution Posted, 9 Comments)
Difficulty: 2 of 5Opposite (in Word Problems)
Posted on 2005-01-10 by e.g. (Solution Posted, 6 Comments)
Difficulty: 3 of 5Square pairs (in Numbers) Rating: 4.33
Posted on 2005-01-09 by e.g. (Solution Posted, 12 Comments)
Difficulty: 1 of 5Inaugural (in Word Problems) Rating: 3.00
Posted on 2005-01-07 by e.g. (Solution Posted, 12 Comments)
Difficulty: 3 of 5Prime divisors (in Just Math) Rating: 3.75
Posted on 2005-01-04 by e.g. (Solution Posted, 11 Comments)
Difficulty: 3 of 5Are you ill? (in Probability) Rating: 3.75
Posted on 2005-01-03 by e.g. (Solution Posted, 18 Comments)
Difficulty: 3 of 5Many heads (in Probability) Rating: 4.33
Posted on 2004-12-13 by e.g. (Solution Posted, 6 Comments)
Difficulty: 3 of 5Division (in Just Math) Rating: 3.83
Posted on 2004-12-11 by e.g. (Solution Posted, 16 Comments)
Difficulty: 1 of 5A few coins (in Numbers) Rating: 2.92
Posted on 2004-11-19 by e.g. (Solution Posted, 14 Comments)
Difficulty: 3 of 5What did Black play? (in Games) Rating: 4.50
Posted on 2004-10-18 by e.g. (Solution Posted, 6 Comments)
Difficulty: 3 of 5Nine kids (in Numbers) Rating: 4.13
Posted on 2004-09-09 by e.g. (Solution Posted, 22 Comments)
Difficulty: 3 of 5Spirit of 76 with no products (in Numbers) Rating: 3.33
Posted on 2004-07-13 by e.g. (Solution Posted, 3 Comments)
Difficulty: 3 of 5Who played first? (in Games) Rating: 3.70
Posted on 2004-05-07 by e.g. (Solution Posted, 26 Comments)
Difficulty: 1 of 5Cutting a cube (in Shapes) Rating: 3.60
Posted on 2004-04-28 by e.g. (Solution Posted, 6 Comments)
Difficulty: 3 of 5Finding the maximum (in Algorithms) Rating: 4.00
Posted on 2004-04-21 by e.g. (Solution Posted, 16 Comments)
Difficulty: 2 of 5Rotating an array (in Algorithms) Rating: 4.00
Posted on 2004-04-19 by e.g. (Solution Posted, 26 Comments)
Difficulty: 3 of 5The many sages (in Logic) Rating: 2.36
Posted on 2004-04-13 by e.g. (Solution Posted, 24 Comments)
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