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The Mathemagician

In this highly entertaining performance combining math with magic, Arthur Benjamin—aka, the the "Mathemagician"—displays amazing feats of mental mathematical gymnastics and explains the secrets behind his lightning-fast math skills. How does the Mathemagician best an electronic calculator? The World Science Festival gathers great minds in science and the arts to produce live and digital content that allows a broad general audience to engage with scientific discoveries. Our mission is to cultivate a general public informed by science, inspired by its wonder, convinced of its value, and prepared to engage with its implications for the future. Subscribe to our YouTube Channel for all the latest from WSF. Visit our Website: http://www.worldsciencefestival.com/ Like us on Facebook:   / worldsciencefestival   Follow us on twitter:   / worldscifest   ARTHUR BENJAMIN Mathematician, Magician, Author A professional magician, Arthur Benjamin can multiply large numbers faster than a calculator, figure out the weekday of any date in history, and has memorized the decimal numbers of Pi out to 100 digits. Anointed “America’s Best Math Whiz” by Reader’s Digest, Benjamin applied his skills to the game of backgammon and won the American Backgammon Tour in 1997. He is the author of several books, including Secrets of Mental Math. Benjamin is professor of mathematics at Harvey Mudd College in Claremont, California. Original Program Date: June 5, 2010 PARTICIPANT: Arthur Benjamin Arthur Benjamin's Introduction 00:23 A card trick that has never been seen before. 01:08 Faster than a speeding calculator. 03:13 Predicting the number you didn't say. 09:50 Sudoku from the audience 12:24 What day of the week were you born on? 16:46 How to multiply numbers quickly 20:00 Who can Square the number 97? 29:00 Multiples of eleven. 35:42 Divide and average. 43:20 The Mathemagician's apprentice Ethan Brown. 47:14 Squaring five digits in your head. 52:13