The Birthday Paradox: only 23 people for 50/50 odds | Ludwig Explains
1:19
YouTubeludwig explains
The Birthday Paradox: only 23 people for 50/50 odds | Ludwig Explains
How many people do you need in a room before two of them share a birthday? For a guarantee: 366 (one more than the days in a year, by pigeonhole). But for a 50/50 chance, most people guess maybe 150. The real answer is 23. Why our intuition fails: we instinctively compute the wrong question — "what's the chance someone matches MY birthday ...
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