Question

Which expression represents the probability of rolling a 5 exactly three times in ten rolls of a number cube with six sides?

Answer 1

I'm not sure what the options are as this appears to be a multiple choice question, but this probability is as follows:
$P(X=3)={10\choose3}(\frac{1}{6})^3(\frac{5}{6})^7$

Answer 2

Answer:

c

Step-by-step explanation: