This book is another great collection of problems, discussions, and mathematical curiosities from Martin Gardner - and one of his best.
In this book, Martin Gardner has assembled an absorbing discussion on the theoretical aspects and possibility of time travel, including the many paradoxes that may arise; two problem collections to give to try out yourself and give to your friends; two chapters on tangrams and tiling each; along with 15 more chapters on interesting topics such as the melody-making machines, anamorphic art, block packing and more.

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