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23 and Football Birthdays - Numberphile

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Published on Feb 14, 2012

What's the probability that two people on the football/soccer pitch share a birthday?
More links & stuff in full description below ↓↓↓

That's only 23 people (22 players and the ref, as long as there have been no red cards or injuries!!!) and there are 365 days in a normal year.

Dr James Grime explains. Our thanks to Nottingham Forest Football Club.

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