Discover the adventure and excitement of mathematical puzzles. Match your wits with the human computer. Sharpen your intellect, delight your friends and enjoy h

There is a range and richness to numbers. They can come alive, cease to be symbols written on a black board, and lead the reader into a world of intellectual ad

Shakuntala Devi, the Human Computer, explains and simplifies everything you always wanted to know about numbers but was difficult to understand. This book conta

"Brain Training Games" is the instruction book for your mind and subconscious. You'll only need to spend 5-minutes a day. You have the power -- I just show you

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