TEDTalks - Arthur Benjamin: Lightning Calculation and other "Mathemagic"
About this talk: In a lively show, mathemagician Arthur Benjamin races a team of calculators to figure out 3-digit squares, solves another massive mental equation and guesses a few birthdays. How does he do it? He’ll tell you.
Time 15:14 minutes; Filmed February 2005; Posted on TED: December 2007
About Arthur Benjamin: Mathematician and magician Arthur Benjamin combines his two passions in "Mathemagics," a mind-boggling presentation of lightning calculations and other feats of mathematical agility.
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