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9780806988146
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Test your skill with numbers, units, measures, symbols, series, permutations, and all sorts of other mathematical manipulations. Some of the problems may seem easy, but don't be fooled. Most of them will try even the most clever mathematicians!Heafford, Philip is the author of 'Great Book of Math Puzzles - Philip Ernest Heafford - Paperback' with ISBN 9780806988146 and ISBN 0806988142.
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