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Hello there.

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

Casting Out Nines

Casting Out Nines

Additional information

Dr James Grime and a handy trick for checking calculations. Ditch the nines...

Some extra footage from this interview: https://youtu.be/wQsQ8joretY

The Neverending Story (and Droste Effect)

The Neverending Story (and Droste Effect)

The Trinity Hall Prime

The Trinity Hall Prime