HI! I need help to find some answers!

What is the probability that if you roll a single standard die four times you will roll four different numbers?

5/18, 240/1296, 1/3 or none of these?

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- Nov 28th 2007, 10:12 AM #1K.S. TurnerGuest

- Nov 28th 2007, 12:15 PM #2

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The first die can be any of six values, the second any of the remaining five

and the third any of the remaining four and so on. So there are

ways of rolling four dice so they are all different, and ways of rolling the

die without constraint.

So the required probability is

RonL

- Nov 29th 2007, 02:56 AM #3

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- Nov 30th 2007, 04:59 AM #4

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