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An unread, unused copy: no writing or highlighting, and no missing or damaged pages. Every book we sell is brand new, including our lowest-priced titles.
This book challenges mathematical skills in a totally different way from the usual geometric puzzles. Across 5 chapters, there are 120 visually intriguing puzzles, each one corresponding to a level of difficulty, from the very easy to the very hard. Solving these fun puzzles will enhance the reader's understanding of mathematics.