Secrets of Mental Math

Arthur Benjamin & Michael Shermer
Three Rivers Press, 2008, 304 pp.
Descrição do produto:

"Secrets of Mental Math will have you thinking like a math genius in no time. Get ready to amaze your friends—and yourself—with incredible calculations you never thought you could master, as renowned 'mathemagician' Arthur Benjamin shares his techniques for lightning-quick calculations and amazing number tricks. This book will teach you to do math in your head faster than you ever thought possible, dramatically improve your memory for numbers, and—maybe for the first time—make mathematics fun."