کتاب Problem Book in High-school Mathematics (نسخه کامل)

Books in this series are devoted exclusively to problems – challenging, difficult, but accessible problems. They are intended to help at all levels – in college, in graduate school, and in the profession. Arthur Engels “Problem-Solving Strategies” is good for elementary students and Richard Guys “Unsolved Problems in Number Theory” is the classical advanced prototype. The series also features a number of successful titles that prepare students for problem-solving competitions.

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