The Birthday Paradox
8:03
YouTubeVsauce2
The Birthday Paradox
How many people need to be in a room before there’s a 50% chance that two of them share the same birthday? Is it about 180, since that’s around half of 365? Is it only 100? The real answer is surprisingly much, much smaller. If you have just 23 people in a room, the odds of whether two get presents on the same day is a coin flip. Get 50 ...
14.1M viewsDec 18, 2018
Shorts
The Birthday Problem in Probability: P(A) = 1 - P(not A)
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The Birthday Problem in Probability: P(A) = 1 - P(not A)
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Lecture 3: Birthday Problem, Properties of Probability | Statistics 110
Harvard University
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