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Benj_0307338401_4p_fm_r1.r.qxd 5/4/06 1:37 PM Page iSECRE+SOFMEN+AL MA+H
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Benj_0307338401_4p_fm_r1.r.qxd 5/4/06 1:37 PM Page iiiSECRE+SOFMEN+AL MA+H
The Mathemagician’s Guide to Lightning Calculation
and Amazing Math TricksArthur Benjamin
and Michael Shermer
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Copyright © 2006 by Arthur Benjamin and Michael Shermer
All rights reserved.
Published in the United States by Three Rivers Press, an imprint of the Crown
Publishing Group, a division of Random House, Inc., New York.
Originally published in different form as Mathemagics
by Lowell House,
Los Angeles, in 1993.
Three Rivers Press and the Tugboat design are registered trademarks of Random
Library of Congress Cataloging-in-Publication Data
Secrets of mental math : the mathemagician’s guide to lightning calculation and
amazing math tricks / Arthur Benjamin and Michael Shermer.— 1st ed.
Includes bibliographical references and index.
1. Mental arithmetic—Study and teaching. 2. Magic tricks in mathematics
education. 3. Mental calculators. I. Shermer, Michael. II. Title.
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I dedicate this book to my wife, Deena,
and daughters, Laurel and Ariel.
My dedication is to my wife, Kim,
for being my most trusted conﬁdante
and personal counselor.
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Benj_0307338401_4p_fm_r1.r.qxd 5/4/06 1:37 PM Page viiAcknowledgments
The authors wish to thank Steve Ross and Katie McHugh at
Random House for their support of this book. Special thanks to
Natalya St. Clair for typesetting the initial draft, which was
partly supported by a grant from the Mellon Foundation.
Arthur Benjamin especially wants to acknowledge those who
inspired him to become both a mathematician and a magician—
cognitive psychologist William G. Chase, magicians Paul Gertner
and James Randi, and mathematicians Alan J. Goldman and
Edward R. Scheinerman. Finally, thanks to all of my colleagues
and students at Harvey Mudd College, and to my wife, Deena,
and daughters, Laurel and Ariel, for constant inspiration.
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- Title Page
- Foreword by Bill Nye
- Foreword by James Randi
- Chapter 0
- Chapter 1
- Chapter 2
- Chapter 3
- Chapter 4
- Chapter 5
- Chapter 6
- Chapter 7
- Chapter 8
- Chapter 9
- About the Authors