Math Puzzles for the Clever Mind

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It's true--playing with numbers can raise your I.Q., and help you think more clearly. And, these 100 examples are among the best. Find the shortcut for adding 2, 3, and 4 to form 6 different 3-digit numbers. Or, try this: What is the smallest number that when multiplied by 3 gives an answer consisting of all 4's? Other braintwisters involve flipping coins, burning candles, and taking apart a Rubik's cube in your head. T hey're all fun. "A puzzle book for a large audience....People who enjoy mathematical puzzles, but are ...

Math Puzzles for the Clever Mind 2013, Puzzlewright, New York

ISBN-13: 9781454909736

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Math Puzzles for the Clever Mind 2006, Orient Paperbacks

ISBN-13: 9788122203455

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Math Puzzles for the Clever Mind 2001, Sterling, New York, NY

ISBN-13: 9780806951157

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