'She leaves you spellbound with calculating feats that could be the envy of the best computers in the world.' — Times of India

Original... Maddening and... Irresistible! Here are over 300 brain teasers, riddles and mathematical puzzles by one of the greatest mathematical geniuses of the twentieth century, Shakuntala Devi, popularly known as the 'human computer'. Often entertaining, but always stimulating, the puzzles included in the book offer hours of fun and relaxation.