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Название: The Enjoyment of Mathematics: Selections from Mathematics for the Amateur (Dover Books on Mathematical and Word Recreations)
Авторы: Rademacher H., Toeplitz O.
Requiring only a basic background in plane geometry and elementary algebra, this classic poses 28 problems that introduce the fundamental ideas that make mathematics truly exciting. "Excellent . . . a thoroughly enjoyable sampler of fascinating mathematical problems and their solutions"—Science Magazine.