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    carmen120's Avatar
    carmen120 Posts: 3, Reputation: 1
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    #1

    Sep 6, 2007, 10:35 AM
    probability of people
    I have a challenge to find the following:
    How many people do you need, to have a 50% or better chance of finding two persons with the same birthday (month/day)?
    carmen120's Avatar
    carmen120 Posts: 3, Reputation: 1
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    #2

    Sep 6, 2007, 10:37 AM
    How many people do you need, to have 50% or better chance of finding two persons with the same birthdat (month/day)?
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #3

    Sep 6, 2007, 11:25 AM
    the probability that 2 people in a group of n people will have the same birthday is



    This is 50.7% for n = 23.
    carmen120's Avatar
    carmen120 Posts: 3, Reputation: 1
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    #4

    Sep 6, 2007, 12:02 PM
    probability of people
    I don't understand the value of n in the equation so that I can compute it
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #5

    Sep 6, 2007, 12:14 PM
    I told you what n is in my answer. Please read it again.

    The rate button is for indicating an answer as correct or incorrect. My answer was not incorrect. Did you think that replying in the thread and EMAILING ME was not enough?
    s_cianci's Avatar
    s_cianci Posts: 5,472, Reputation: 760
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    #6

    Sep 8, 2007, 10:55 AM
    The 'n' in Capuchin's formula is the number of people in the group in question.

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