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Hello there.

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

James Card Trick

James Card Trick

Additional information

James Grime has a card trick (and wants your help improving it).

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More videos about Card Tricks: http://bit.ly/Cards_Shuffling

More James Grime videos: http://bit.ly/grimevideos

James Grime: https://www.singingbanana.com

The Dehn Invariant

The Dehn Invariant

Necklace Splitting

Necklace Splitting