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A fair die is rolled three times. Find the chance that three different faces appear.
12 years ago

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Steve
on the first roll, some face appears.
On the 2nd roll, there's a 5/6 chance that a new face appears
On the 3rd roll, there's a 4/6 chance that a new face appears.

So, p=(1)(5/6)(4/6) = 5/9
12 years ago

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