Shakuntala Devi (2)

Shakuntala Devi's Book of Numbers  Everything You Always Wanted to Know About Numbers, But was Difficult to Understand We can't live without numbers. We need them in our daily chores,...

Puzzles to Puzzle You Discover adventure and excitementof mathematical puzzles! Match your wits with the human computer!! Sharpen your intellect, delight your friends and enjoy hours of purposeful entertainment!!!  Mathematics...