Birthday paradox

In a room of just 23 people there’s a 50-50 chance of at least two people having the same birthday. In a room of 75 there’s a 99.9% chance of at least two people matching.

How so?

3 comments for “Birthday paradox

  1. FrankH
    July 22, 2019 at 19:48

    Probability, innit.

  2. July 22, 2019 at 20:01

    I’m assuming, of course, that readers know to highlight the blank line, my old trick.

  3. Mark in Mayenne
    July 22, 2019 at 20:44

    Strange but true.

    By the way, thanks for the Bill Whittle link. Apollo moon landing documentary very in testing.

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