发表于2025-01-22
50 Mathematical Puzzles and Problems 2025 pdf epub mobi 电子书
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Red Collection The Red Collection (Grade 9-College) is the most challenging set, involving distance, vectors, transformations, systems of equations, series, powers, and number theory. Problems are solved with compass and straightedge constructions, trigonometry, the Pythagorean theorem, synthetic division, and a great deal of ingenuity.
50 Mathematical Puzzles and Problems 2025 pdf epub mobi 电子书