Over 170 challenging problems ranging from the relatively simple to the extremely difficult. Volume 2 contains 74 problems on points and lines, topology, convex polygons, nondecimal counting and other topics. Includes solutions.
Here's a sample of other books in this Dover category
Challenging Mathematical Problems with Elementary Solutions, Vol. 1 by A. M. Yaglom, I. M. Yaglom Over 170 challenging problems ranging from the relatively simple to the extremely difficult. Volume 1 contains 100 problems on probability theory and combinatorial analysis.
Challenging Mathematical Problems 2 Vol Set by Dover Save Over 11%! This 2-volume set of Challenging Mathematical Problems with Elementary Solutions features over 170 challenging problems ranging from the relatively simple to the extremely difficult.
The USSR Olympiad Problem Book: Selected Problems and Theorems of Elementary Mathematics by D. O. Shklarsky, N. N. Chentzov, I. M. Yaglom Over 300 challenging problems in algebra, arithmetic, elementary number theory and trigonometry, selected from Mathematical Olympiads held at Moscow University. Only high school math needed. Includes complete solutions. Features 27 black-and-white illustrations. 1962 edition.
How to Solve Mathematical Problems by Wayne A. Wickelgren Seven problem-solving techniques include inference, classification of action sequences, subgoals, contradiction, working backward, relations between problems, and mathematical representation. Also, problems from mathematics, science, and engineering with complete solutions.
Mathematical Recreations: Second Revised Edition by Maurice Kraitchik Ranging from ancient Greek and Roman problems to modern applications and techniques, this book features 250 puzzles and problems — with solutions — from medieval European, Arabic, and Hindu sources.
