Secrets of Mental Math: Arthur Benjamin

The closing keynote for Monday night, usually something fun and light, did not disappoint. The speaker was Arthur Benjamin, author of the book Secrets of Mental Math. He's a "mathemagician" doing mental math at lightening speed. He did magic squares, 4 digit number multiplication, day of the week calculations, and other things. It was very fun and entertaining.

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Last modified: Thu Oct 10 12:47:19 2019.