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Hello there.

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

Did Usain Bolt REALLY run 100m in 9.63 seconds?

Did Usain Bolt REALLY run 100m in 9.63 seconds?

Usain Bolt won gold in the 100m sprint at the London Olympics, clocking 9.63 seconds... but Albert Einstein has something to say about all this?

Featuring Tony Padilla - http://twitter.com/DrTonyPadilla

One-Roll Yahtzee Fever

One-Roll Yahtzee Fever

Borromean Olympic Rings

Borromean Olympic Rings