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Hello there.

This is Numberphile. We mainly post videos about mathematics and just numbers in general.

Zequals and Estimation

Zequals and Estimation

Rob Eastaway on his "zequals" estimation method - ruthless rounding!

The book is at http://amzn.to/Uf5mqv & extra footage at http://youtu.be/ND9NKCopbu0

Pi and the size of the Universe

Pi and the size of the Universe

Anatomy of a Goal

Anatomy of a Goal