Art Benjamin: Mathemagician

Posted on March 6, 2010 by

Arthur Benjamin: Lightning calculation and other “Mathemagic”

In this video Arthur Benjamin calculates squares of 2, 3, and 4 digit numbers faster than you can do it on a calculator. I know. I tried to keep up while watching the video. Audience members give him their birthdate and he tells them what day of the week they were born. Wait until you see what he does for his grand finale.

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3 Responses to Art Benjamin: Mathemagician

  1. MaggieMo says:
    March 6, 2010 at 10:47 pm

    Absolutely amazing. Where does the magic come in? Any ideas, or is it all in his brain? What do we call this fellow?

    Reply
  2. dedwarmo says:
    March 7, 2010 at 1:50 am

    I’m not sure where the magic fits in, but he is what is called a “mental calculator”. Wikipedia has an article about mental calculators. Evidently they hold competitions once in a while and these guys race each other doing difficult calculatons in their heads

    http://en.wikipedia.org/wiki/Mental_calculator

    Reply
  3. Perry says:
    April 18, 2010 at 3:11 pm

    I think it is a skill you can learn. But takes lots of practice.

    Reply

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