# Binomial probability, rolling dice

A die is rolled 30 times , what is the probability that 6 turns up exactly 5 times?

(30 choose 5)* 1/6ˆ5 * 5/6ˆ25 ?

What is wrong with this?

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## 1 Answer

Surely, parenthesis around 5/6 are missing. Otherwise, nicer math formatting would make it better readable, but doesn't make it wrong.

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i.e. ${30 \choose 5} \left( \frac{1}{6} \right)^5 \left( \frac{5}{6} \right)^{25}$ –  Henry Oct 20 '11 at 16:12
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