About This Video

In a lively show, "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.

Mathematician and magician Arthur Benjamin combines his two passions in "Mathemagics," a mind-boggling... Read full bio »

Video from http://www.ted.com/  (Video Link was suggested by Bonnie Wright, Concord, CA)