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# five fair dice are rolled. what is the probability of having

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five fair dice are rolled. what is the probability of having [#permalink]

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25 Jun 2003, 00:59
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five fair dice are rolled. what is the probability of having EXACTLY 3 threes?

This is a series of easy questions as BB asked me to post.
SVP
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25 Jun 2003, 07:02
I think i have forgotten to multiply it by 5C3=10
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25 Jun 2003, 10:45
I agree, combine the two previous responses
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28 Jun 2003, 12:47
a particular situation 333XX = 1/6*1/6*1/6*5/6*5/6

th enumber of such sutuations is 5C3=10

10*5*5/6^5

Last edited by stolyar on 30 Jun 2003, 00:03, edited 1 time in total.
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29 Jun 2003, 13:10

10*5*5 125
---------- = -----
6*6*6*6*6 3888

stolyar wrote:
a particular situation 333XX = 1/6*1/6*1/6*5/6*5/6

th enumber of such sutuations is 5C3=10

10*5*5 0000125
---------- = -----
6*6*6*6 ))) 648
29 Jun 2003, 13:10
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