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Search results for problems posted by Erik O. :
Difficulty: 2 of 5Binary Crossnumber Puzzle - 01 (in General) Rating: 4.00
Posted on 2005-11-03 by Erik O. (Solution Posted, 9 Comments)
Difficulty: 3 of 5Are we odd for liking this, too? (in Cryptography) Rating: 3.33
Posted on 2005-08-30 by Erik O. (Solution Posted, 18 Comments)
Difficulty: 4 of 5Synograms (in Word Problems) Rating: 4.40
Posted on 2005-08-17 by Erik O. (No Solution Yet, 13 Comments)
Difficulty: 1 of 5Needle in a Haystack (in General) Rating: 1.88
Posted on 2005-08-17 by Erik O. (Solution Posted, 13 Comments)
Difficulty: 1 of 5Inverting Triangles (in Shapes) Rating: 2.17
Posted on 2005-08-15 by Erik O. (No Solution Yet, 14 Comments)
Difficulty: 4 of 5Saturn V (in Cryptography) Rating: 3.75
Posted on 2005-08-13 by Erik O. (Solution Posted, 4 Comments)
Difficulty: 1 of 5A Fruity Kind of Problem (in General) Rating: 3.00
Posted on 2005-08-10 by Erik O. (Solution Posted, 15 Comments)
Difficulty: 1 of 5How Long 'til Morning? (in General) Rating: 2.50
Posted on 2005-08-09 by Erik O. (Solution Posted, 20 Comments)
Difficulty: 1 of 5Just Key It In... (in Sequences) Rating: 3.50
Posted on 2005-08-06 by Erik O. (No Solution Yet, 6 Comments)
Difficulty: 1 of 5Knot or Not? (in Probability) Rating: 2.33
Posted on 2005-08-04 by Erik O. (Solution Posted, 16 Comments)
Difficulty: 2 of 5Et Tu, Brute? (in Sequences) Rating: 3.50
Posted on 2005-08-02 by Erik O. (Solution Posted, 15 Comments)
Difficulty: 1 of 5Another Pattern of Numbers (in Numbers) Rating: 4.00
Posted on 2005-07-29 by Erik O. (No Solution Yet, 17 Comments)
Difficulty: 2 of 5Thirds and Differences (in Numbers) Rating: 3.00
Posted on 2005-07-21 by Erik O. (No Solution Yet, 9 Comments)
Difficulty: 3 of 5No Incest, Please (in General) Rating: 3.60
Posted on 2005-07-18 by Erik O. (No Solution Yet, 13 Comments)
Difficulty: 1 of 5Three of These and Three of Those (in Word Problems) Rating: 3.00
Posted on 2005-07-14 by Erik O. (Solution Posted, 19 Comments)
Difficulty: 1 of 5Double Letters at the Front (in Word Problems) Rating: 2.29
Posted on 2005-07-11 by Erik O. (No Solution Yet, 26 Comments)
Difficulty: 3 of 5From a Balloon (in Science) Rating: 3.00
Posted on 2005-07-07 by Erik O. (No Solution Yet, 33 Comments)
Difficulty: 2 of 5123456 (in Numbers) Rating: 3.40
Posted on 2005-07-04 by Erik O. (Solution Posted, 21 Comments)
Difficulty: 2 of 5Square Rotation (in Shapes) Rating: 1.75
Posted on 2005-07-02 by Erik O. (Solution Posted, 4 Comments)
Difficulty: 3 of 5More Scales and Measures (in Weights and Scales)
Posted on 2005-06-28 by Erik O. (Solution Posted, 6 Comments)
Difficulty: 2 of 5Five People on Two Bridges (in Logic) Rating: 3.80
Posted on 2005-06-25 by Erik O. (Solution Posted, 40 Comments)
Difficulty: 1 of 5What time is it again? (in General) Rating: 3.00
Posted on 2005-06-19 by Erik O. (Solution Posted, 8 Comments)
Difficulty: 3 of 5L.A. to Hawaii (in Science) Rating: 1.50
Posted on 2005-06-17 by Erik O. (Solution Posted, 11 Comments)
Difficulty: 3 of 5Artful Arithmetic (in Just Math) Rating: 2.50
Posted on 2005-04-01 by Erik O. (Solution Posted, 2 Comments)
Difficulty: 3 of 5What's wrong with CDs? (in Calculus) Rating: 4.00
Posted on 2005-03-30 by Erik O. (Solution Posted, 10 Comments)
Difficulty: 3 of 5Magic Keyring (in Sequences) Rating: 3.00
Posted on 2005-03-28 by Erik O. (Solution Posted, 6 Comments)
Difficulty: 3 of 5Sums of squares and stuff. (in Numbers)
Posted on 2005-03-26 by Erik O. (Solution Posted, 16 Comments)
Difficulty: 4 of 5Dodecahedron (in Geometry)
Posted on 2005-03-24 by Erik O. (Solution Posted, 1 Comments)
Difficulty: 3 of 5Prime Birthdays (in Just Math) Rating: 1.00
Posted on 2005-03-23 by Erik O. (Solution Posted, 1 Comments)
Difficulty: 3 of 5Prime Perimeter (in Logic) Rating: 2.82
Posted on 2005-03-11 by Erik O. (Solution Posted, 89 Comments)
Difficulty: 3 of 5How old did you say they were? (in Logic) Rating: 3.00
Posted on 2005-03-03 by Erik O. (Solution Posted, 31 Comments)
Difficulty: 2 of 59! (in Just Math) Rating: 3.00
Posted on 2005-02-28 by Erik O. (Solution Posted, 12 Comments)
Difficulty: 3 of 5It ain't Fibonacci (in Sequences) Rating: 4.00
Posted on 2005-02-22 by Erik O. (Solution Posted, 10 Comments)
Difficulty: 1 of 5Another Simple Sequence (in Sequences) Rating: 3.60
Posted on 2004-12-22 by Erik O. (Solution Posted, 10 Comments)
Difficulty: 3 of 5A Pattern of Numbers (in Numbers) Rating: 4.00
Posted on 2004-12-16 by Erik O. (Solution Posted, 8 Comments)
Difficulty: 2 of 5Sequence of Musical Tones (in Algorithms) Rating: 3.83
Posted on 2004-12-14 by Erik O. (Solution Posted, 20 Comments)
Difficulty: 2 of 51 To 15 in a 3x5 Array (in Numbers) Rating: 3.00
Posted on 2004-12-09 by Erik O. (Solution Posted, 11 Comments)
Difficulty: 2 of 5Triangular Cubes (in Probability) Rating: 3.00
Posted on 2004-12-04 by Erik O. (Solution Posted, 11 Comments)
Difficulty: 1 of 5When First the Marriage Knot was Ty'd (in Famous Riddles) Rating: 4.11
Posted on 2004-12-02 by Erik O. (Solution Posted, 24 Comments)
Difficulty: 3 of 5M&M (in Sequences) Rating: 2.00
Posted on 2004-11-26 by Erik O. (Solution Posted, 4 Comments)
Difficulty: 3 of 52 3 1 2 1 3 (in Numbers) Rating: 4.29
Posted on 2004-11-23 by Erik O. (Solution Posted, 10 Comments)
Difficulty: 2 of 5Four points on a Plane (in Shapes) Rating: 4.14
Posted on 2004-11-21 by Erik O. (Solution Posted, 15 Comments)
Difficulty: 4 of 5Prime Number Arithmetic (in Just Math) Rating: 4.13
Posted on 2004-11-19 by Erik O. (Solution Posted, 6 Comments)
Difficulty: 2 of 5The Logician's Birthday (in Logic) Rating: 3.48
Posted on 2004-11-17 by Erik O. (Solution Posted, 60 Comments)
Difficulty: 5 of 5About Two Pounds (in Cryptography) Rating: 3.00
Posted on 2004-11-09 by Erik O. (Solution Posted, 7 Comments)
Difficulty: 1 of 5I didn't do it. (in Liars and Knights) Rating: 1.73
Posted on 2004-11-04 by Erik O. (Solution Posted, 16 Comments)
Difficulty: 5 of 5The Watchdog (in Calculus) Rating: 3.40
Posted on 2004-10-28 by Erik O. (Solution Posted, 29 Comments)
Difficulty: 3 of 5Dinner Party (in Logic) Rating: 4.23
Posted on 2004-10-27 by Erik O. (Solution Posted, 53 Comments)
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