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30 dní na vrácení zboží
Have you ever daydreamed about digging a hole to the other side of the world? This book does not only entertains such ideas but, better yet, supplies the mathematical know-how to turn fantasies into problem-solving adventures. The book presents a collection of puzzles for readers interested in sharpening their thinking and mathematical skills. The problems range from the wondrous to the eminently practical. Designed to entertain and to stimulate thinking, this book can be read for sheer personal enjoyment.