A collection of books with Challenging Puzzles...
Collection 1
1) Challenging.Logic.and.Reasoning.Problems
2) Mathematics_Puzzles_from_Around_The_World
Collection 2
1) Puzzles to Puzzle You
2) 1001.Math.Problems
Code:
http://hotfile.com/dl/4567122/9887d5a/puzzle.zip.html
NO PASS! ENJOY!
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