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Ingenious Mathematical Problems and Methods, Paperback by Graham, L. A., ISBN 0486205452, ISBN-13 9780486205458, Brand New, Free shipping in the US
Collection of 100 of the best submissions to a math puzzle column features problems in engineering situations, logic, number theory, and geometry. Most solutions include details of several different methods.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.