Math Encounters — Secrets of Mental Math

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Prepare to be mesmerized as award- winning Harvey Mudd Professor of Mathematics Arthur Benjamin demonstrates (and explains!) how to do rapid mental calculations and other amazing feats of mind. Arthur will be introduced by master magician Mark Mitton.

Math Encounters is a public presentation series celebrating the spectacular world of mathematics and presented by the Simons Foundation and the National Museum of Mathematics.

For further information, call the Museum of Mathematics at (212) 542-0566 or e-mail


Lucas Rodriguez says:

I loved the Pi song

Matthias Köhler (MattK269) says:

I wish he had been my math teacher in school…

Food For Thought says:

How come cubing doesn't work on double digits (78^3). =/

gotz2grind says:

Captain Caveman in the background to the right.

Vaclav Haval says:

Intro over at 4:28. Secrets explained beginning at 23:55.

Thanh phan tan says:

can anyone explain at 49:34 how can he knows the 4744? I can't get his idea

david ivane lucas says:

15:00 is <3

andrew velez says:

ridiculous …….. !!!!

BMiBudz says:

this guy is phenomenal truely appreciate maths so much more thnx to people like him 

adrian peirson says:

Fabulous, thanks for sharing.

y la says:

Question: How could he filled the rest of the numbers at  15:00 ??

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