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Search results for problems posted by David Shin :
Difficulty: 4 of 5Blindfolded at the Great Wall of China (in Geometry) Rating: 4.50
Posted on 2010-07-29 by David Shin (No Solution Yet, 10 Comments)
Difficulty: 5 of 5Radioactive Coins (in Weights and Scales) Rating: 4.50
Posted on 2006-10-17 by David Shin (No Solution Yet, 18 Comments)
Difficulty: 5 of 5Mental Math Competition (in Algorithms) Rating: 2.20
Posted on 2005-04-29 by David Shin (Solution Posted, 7 Comments)
Difficulty: 2 of 5Only One Hand (in Games) Rating: 4.29
Posted on 2005-04-11 by David Shin (Solution Posted, 31 Comments)
Difficulty: 1 of 5Animal + Plant (in Word Problems) Rating: 3.33
Posted on 2005-04-09 by David Shin (Solution Posted, 16 Comments)
Difficulty: 3 of 5Digit Counting (in Numbers) Rating: 3.33
Posted on 2005-02-25 by David Shin (Solution Posted, 2 Comments)
Difficulty: 4 of 5Quadruplets with Square Triplets (in Numbers) Rating: 4.00
Posted on 2005-02-23 by David Shin (Solution Posted, 9 Comments)
Difficulty: 4 of 5Sums of Squares (in Numbers) Rating: 3.29
Posted on 2005-02-21 by David Shin (Solution Posted, 8 Comments)
Difficulty: 4 of 5Lucky Numbers (in Numbers) Rating: 3.75
Posted on 2005-02-19 by David Shin (Solution Posted, 5 Comments)
Difficulty: 4 of 5Biased Coins (in Just Math) Rating: 4.00
Posted on 2005-02-17 by David Shin (Solution Posted, 9 Comments)
Difficulty: 5 of 5Figure Eights (in General) Rating: 4.20
Posted on 2005-02-15 by David Shin (Solution Posted, 34 Comments)
Difficulty: 3 of 5Only Isosceles (in Geometry) Rating: 4.50
Posted on 2005-02-13 by David Shin (Solution Posted, 6 Comments)
Difficulty: 5 of 5Four Pins and a Rubber Band (in Probability) Rating: 4.10
Posted on 2005-02-10 by David Shin (Solution Posted, 11 Comments)
Difficulty: 4 of 5God and the Devil (in Games) Rating: 3.68
Posted on 2005-02-08 by David Shin (Solution Posted, 62 Comments)
Difficulty: 4 of 5Connect The Dots (in Geometry) Rating: 3.67
Posted on 2005-02-06 by David Shin (Solution Posted, 14 Comments)
Difficulty: 5 of 5Pizza Cutter (in Geometry) Rating: 3.67
Posted on 2005-02-04 by David Shin (Solution Posted, 11 Comments)
Difficulty: 2 of 5Four Disks (in Geometry) Rating: 3.00
Posted on 2005-02-02 by David Shin (Solution Posted, 5 Comments)
Difficulty: 3 of 5A Square Triangulation (in Shapes) Rating: 3.67
Posted on 2005-01-31 by David Shin (Solution Posted, 4 Comments)
Difficulty: 3 of 5Bisect The Segment (in Geometry) Rating: 4.00
Posted on 2005-01-29 by David Shin (Solution Posted, 8 Comments)
Difficulty: 5 of 5One Word, Seven Times (in Word Problems) Rating: 3.50
Posted on 2005-01-27 by David Shin (Solution Posted, 14 Comments)
Difficulty: 2 of 5Consecutive Primes (in Just Math) Rating: 3.17
Posted on 2005-01-24 by David Shin (Solution Posted, 6 Comments)
Difficulty: 4 of 5Word Meld 7 (in Word Problems) Rating: 2.67
Posted on 2005-01-22 by David Shin (Solution Posted, 11 Comments)
Difficulty: 3 of 5Broken Calculator (in Just Math) Rating: 3.63
Posted on 2005-01-20 by David Shin (Solution Posted, 14 Comments)
Difficulty: 3 of 5Homophonic Equality (in Word Problems) Rating: 4.00
Posted on 2005-01-18 by David Shin (Solution Posted, 8 Comments)
Difficulty: 3 of 5Four Letter Sequences (in Word Problems) Rating: 3.67
Posted on 2005-01-12 by David Shin (Solution Posted, 8 Comments)
Difficulty: 3 of 5Bumper Cars (in Logic) Rating: 2.50
Posted on 2004-12-30 by David Shin (Solution Posted, 14 Comments)
Difficulty: 4 of 5Remainder of One (in Just Math) Rating: 3.88
Posted on 2004-12-29 by David Shin (Solution Posted, 13 Comments)
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