4196220
9780521446020
Ranging from The Adventures of the Seven Dwarfs to The Martian Dating Agency, 100 original challenging problems & games for mathematicians from age 15 on include hints & solutions to most & are graded according to difficulty.Vout, Colin is the author of 'Challenging Puzzles - Colin Vout - Paperback' with ISBN 9780521446020 and ISBN 0521446023.
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