You get a book by Karl Fulves of 101 foolproof tricks with 98 illustrations. With this book, you will learn how to perform show-stopping tricks, stunts, and routines that are sure to delight audiences because they capitalize on our natural fascination for numbers.
Among the seemingly impossible tricks and stunts are:
Guessing a spectator's age
How long a married couple has known each other
Predicting the sum of a group of numbers
How to use your brain like a lightening calculator
How to instantly memorize a long list of numbers or things
And much, much more
All can be learned quickly and put into operation immediately.