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Knotted Doughnuts and Other Mathematical Entertainments
Introduces puzzles and math problems involving coincidence, ciphers, games, the I Ching, geometric figures, and paradoxes. Martin Gardner is the author of more than seventy books on a vast range of topics including "Did Adam & Eve Have Navels?", "Calculus Made Easy", & "The Annotated Alice". He lives in Hendersonville, North Carolina.