How to perform feats of MATHEMATICAL WIZARDRY!

They'll marvel at your amazing number tricks, games, lightning calculation, your magical knowledge. They'll think you're a genius!

You are going to love the things this book will teach you. Absolutely nothing to carry, no gimmicks! Just great number magic! These are, anywhere, anytime, on the spot number miracles.

Sample Effect

A member of the audience multiplies two 3-digit numbers together, and then reads you every digit in the answer except for one of them, and you can instantly name the missing digit!!! (This can be done as a mind-reading, a memory or a lightning calculation feat)!

And, that's only one of so many amazing, mind-blowing feats of lightning calculation. Harry's selected only the most entertaining effects! He's also introduced new touches to improve presentation for many familiar routines.

Armed with this book you can become the "life of the party" with ju