It takes as less as 23 people to enter a room to give you an good chance that two of them share the same birthday. If the number goes to 75, the chances rise to 99 per cent!
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From @bib15hash
It takes as less as 23 people to enter a room to give you an good chance that two of them share the same birthday. If the number goes to 75, the chances rise to 99 per cent!