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"Mathemagics": Arthur Benjamin on TED.com

Posted by: Tedstaff

In a lively performance, “mathemagician” Arthur Benjamin races a team of calculators to figure out 3-digit squares in his head, performs a massive mental calculation, and guesses a few birth days. How does he do it? He’ll be happy to tell you. (Recorded February 2005 in Monterey, California. Duration: 15:14.)

Watch Arthur Benjamin’s performance on TED.com, where you can download it, rate it, comment on it and find other talks and performances.

Read more about Arthur Benjamin on TED.com.

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