## The Magical Math BookFool your friends; baffle your buddies; and perplex your parents with dozens of amazing tricks. Each of these fascinating feats appears to be the work of magical forces, but their true secret lies in mathematical manipulations. Correctly guess the age of any volunteer. Startle a stranger with knowledge about his or her life. Read minds, make accurate predictions, perform lightning-quick calculations, and demonstrate seemingly mystical powers of memory. Perform extraordinary effects with cards, dice, pencil and paper (and occasionally a calculator). In all of these tricks, the mathematical principle is well-concealed, and in many of them the use of numbers isn't even suspected. For each trick, an explanation of why it works is included in order to help you better understand the principle behind it, as well as to enable you to make your own variations on the trick or to develop other tricks on your own. Suggestions are given for what to say when introducing a trick so as to heighten suspense, increase sur prise, and keep your audience as confounded as possible. No sleight of hand is used, but with your brain power as your "magic wand," you'll have fun entertaining, amazing, and confusing people for hours. 96 pages, 51 b/w illus., 5 3/8 x 8 1/4. NEW IN PAPERBACK |

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### Contents

INTRODUCTION | 5 |

BAFFLING TRICKS | 17 |

CARDS | 26 |

DICE | 42 |

PREDICTION | 55 |

FUN STUFF | 63 |

LIGHTNING CALCULATION | 69 |

MEMORY TRICKS | 79 |

94 | |

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### Common terms and phrases

5-digit number 7th number Adam and Eve add 9 add the digits Add the number added amount of change answer Birthday Change BOB LONGE card at Position Casper choose chosen cards chosen number coin column count cross dice digit adds exchange facedown cards Fibonacci series four four-digit number getting give Gladys going Hugo instance jack Justine last digit last two digits Leona look Lorna Madame Anastasia magic square marked cup Marty move Multiply by 50 number of cards number showing objects odd number original number packet packet forward pencil phone number pile prediction previous trick Randy reduced to 9 result riffle shuffle second digit sequence serial number sheet of paper single digit slips someone spectator's subtract Suppose sure switch tell thumb marks top card top line Turn your back two-digit number up-and-down shuffle zero