\"\"

\

A success in this situation is a strike, so \"\" and \"\".

\

Each frame represents a trial, so \"\".

\

Find the probability that Carol succeeds \"\" times out of \"\" trials :

\

So let \"\".

\

To find this probability, find the value of the term  \"\" in the expansion of \"\".

\

Where \"\" and \"\".

\

Substitute the values \"\" and \"\" in the equation \"\".

\

\"\"\"\".

\

\"\"

\

Therefore, the probability that Carol succeeds \"\" times out of \"\" trials is \"\".

\

\"\"

\

The probability that Carol succeeds \"\" times out of \"\" trials is \"\".