891536
9780806958699
Put your mathematical thinking cap on - because even though these puzzles are tough, they take insight and brainwork to solve, not a knowledge of calculus or linear algebra or any other kind of advanced mathematics.Niederman, Derrick is the author of 'Hard-To-Solve Math Puzzles Official American Mensa Puzzle Book' with ISBN 9780806958699 and ISBN 0806958693.
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