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Math Help - needs help wi a probability question

  1. #1
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    needs help wi a probability question

    if i throw N cubes, what is the probability that exactly 5 of the numbers: 1,2,3,4,5,6 will appear ??

    p.s
    please add comment so i will understand the solution
    thanks
    Last edited by tukilala; June 23rd 2009 at 09:16 AM.
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  2. #2
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    Hello, tukilala!

    if I throw N cubes, what is the probability
    that exactly 5 of the numbers: 1,2,3,4,5,6 will appear?
    The problem is not clear . . .

    What do you mean by "exactly five of the numbers"?

    Do you mean, for example, that only 1, 2, 3, 4, and 5 appear (and the 6 does not)?

    Do you mean a "five of a kind" (a Yahtzee)?

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