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Are you bored?; Tired of your social network?. Try to think of something. Latest

No matter what you think, in everyday things now and forever Why grommets what shirts are vertical and horizontal wraps?; are small challenges José María Letona to us in his book:

THE BOOK OF

PIENSAMUCHOS

(Over 100 games puzzles for fun and exercise your mind, 2010)

can use Logic, Math, Physics, ... but perhaps common sense and powers of observation are the only tools you need to solve them.

(José María Letona is Director of the School of Mathematical Thinking "Miguel de Guzman")

http://www.escuelapensamientomatematico.org/