In Part 9, Finale, Mathemagician, and professor of Mathematics Dr. Arthur Benjamin performs his stunning feats of mental math on the Venafi stage at RSA Conference, 2008. Benjamin gets a random 5-digit number from the audience and squares it in his head, while thinking out loud.
Download the complete video and learn the secrets behind Benjamin's tricks free at http://www.venafi.com/prestopreso.
He's great, he's excited like a kid !
snakeinthegrass20 3 years ago 2