Amazing Math Puzzles

Discover math puzzles everywhere--in pizzas, mirrors, bicycles, candy, hot dogs--and also ancient pyramids, pirates' treasure, and a witch's cauldron. These 82 tantalizing examples will work your brain cells and stump your friends. Solve this one: if you have six pairs of pink gloves and six pairs of yellow ones in your drawer, how many do you have to take out to make sure you've got a pair? ("Answer: 13--don't forget left and right!)Hart-Davis, Adam is the author of 'Amazing Math Puzzles', published 1998 under ISBN 9780613756860 and ISBN 061375686X.