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Given the number 188188...188 (number 188 is written 101 times). Some digits of this number are crossed out. What is the largest multiple of 7, that could happen?
(No Solution Yet, 3 Comments) Submitted on 2021-04-21 by Danish Ahmed Khan   
Difficulty: 3 of 5 Bonus: Close to Fermat (in Numbers)
Show that if an+bn= 2m, and a, b, m, and n are positive integers (n>1), then a=b.
(Solution Posted, 4 Comments) Submitted on 2007-04-06 by Federico Kereki   
Difficulty: 3 of 5Common and tasty (in Word Problems) Rating: 5.00
Posted on 2021-04-20 by Ady TZIDON (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Find set cardinality (in Just Math)
Posted on 2021-04-19 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Pigeonhole roots (in Just Math)
Posted on 2021-04-16 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Bouncing Bishops (in General)
Posted on 2021-04-15 by Charlie (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Prisoners and Coins (in Logic) Rating: 3.00
Posted on 2021-04-14 by tomarken (No Solution Yet, 4 Comments)
Difficulty: 3 of 5Time to rhyme (in Numbers) Rating: 3.00
Posted on 2021-04-13 by Ady TZIDON (No Solution Yet, 2 Comments)
Difficulty: 2 of 5Of equal area (in Geometry)
Posted on 2021-04-12 by Ady TZIDON (No Solution Yet, 0 Comments)
Difficulty: 2 of 5Constrained circle in quadrilateral (in Just Math)
Posted on 2021-04-09 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 1 of 5Euphony (in Logic) Rating: 3.00
Posted on 2021-04-08 by Ady TZIDON (No Solution Yet, 4 Comments)
Difficulty: 2 of 5Pandigital powers (in Numbers) Rating: 5.00
Posted on 2021-04-07 by Math Man (No Solution Yet, 5 Comments)
Difficulty: 3 of 5quadratic ^ quadratic (in General) Rating: 3.00
Posted on 2021-04-06 by Larry (Solution Posted, 3 Comments)
Difficulty: 3 of 5Nearsighted rooks on a large chessboard (in Just Math) Rating: 3.00
Posted on 2021-04-05 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 2 of 5Quadratic inequality leading to sum of roots (in Just Math)
Posted on 2021-04-02 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Knight tour in an infinite board (in Just Math)
Posted on 2021-04-01 by Danish Ahmed Khan (No Solution Yet, 2 Comments)

Recently Posted Solutions:
Difficulty: 3 of 5quadratic ^ quadratic (in General)
Submitted By Larry. Solution posted on 2021-04-06 18:17:40
Difficulty: 2 of 5Square Deal (in Word Problems)
Submitted By Charlie. Solution posted on 2021-04-01 10:25:06
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Submitted By Ady TZIDON. Solution posted on 2021-02-28 01:55:58
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