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9780486252117
Only an elementary knowledge of math is needed to enjoy this entertaining compilation of brain-teasers. It includes a mixture of old and new riddles covering a variety of mathematical topics: money, speed, plane and solid geometry, probability, topology, tricky puzzles and more. Carefully explained solutions follow each problem. 65 black-and-white illustrations.Gardner, Martin is the author of 'Entertaining Mathematical Puzzles' with ISBN 9780486252117 and ISBN 0486252116.
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