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|   | CHALLENGING MATHEMATICAL TEASERS by HUNTER, J. A. H. (Paperback - 1980) ISBN: 9780486238524 Subject: SCIENCE & NATURE Publisher: DOVER | 
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|   | ENTERTAINING MATHEMATICAL TEASERS AND HOW TO SOLVE THEM by HUNTER, J. A. H. (Paperback - 1983) ISBN: 9780486245003 Subject: SCIENCE & NATURE Publisher: DOVER PUBLICATIONS USA | 
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