Lightning calculation and other "mathemagic" | Arthur Benjamin
http://www.ted.com In a lively show, mathemagician Arthur Benjamin races a team of calculators to figure out 3-digit squares, solves another massive mental ...
========== Good morning, ladies and gentlemen. My name is Art Benjamin,
and I am a "mathemagician." What that means is, I combine
my loves of math and magic to do something I call "mathemagics." But before I get started, I have
a quick question for the audience. By any chance, did anyone happen to bring with them
this morning a calculator? Seriously, if you have a calculator
with you, raise your hand. Raise your hand. Did your hand go up? Now bring it out, bring it out.
Anybody else? I see, I see one way in the back. You sir, that's three. And anybody on this side here? OK, over there on the aisle. Would the four of you
please bring out your calculators, then join me up on stage. Let's give them a nice round of applause. (Applause) That's right. Now, since I h...