From simple sums to amazing feats of mental agility! Amaze your friends and astound your family by adding, dividing, subtracting and multiplying sums that look simply impossible. With an easy-to-follow system for making even the hardest problem a complete doddle, now at last you use the amazing Brain Games hints, tips and insider secrets to make yourself into a contender for being a world champion with numbers.
Author Biography
George Lane is the reigning champion of the Mental Calculations World Championship competition and a successful competition chess player.
