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Four fair dices are rolled together. What is the probability

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Joined: 03 Feb 2003
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Four fair dices are rolled together. What is the probability [#permalink]

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21 Jun 2003, 02:38
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Four fair dices are rolled together. What is the probability of having a 1-1-2-2 in any cases?
SVP
Joined: 03 Feb 2003
Posts: 1604
Followers: 9

Kudos [?]: 269 [0], given: 0

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22 Jun 2003, 23:13

{1-1-2-2} = 1/6*1/6*1/6*1/6 -- for this particular combination.
How many combinations are there in 1-1-2-2?
4C2=6, or 4!/2!2!=6

Therefore, 6*1/6*1/6*1/6*1/6=1/216

22 Jun 2003, 23:13
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