Answer:
The roles can be assigned in 15120 ways.
Explanation:
The parts, which means that the order in which the people are selected is important. So we use the permutations formula to solve this question.
Permutations formula:
The number of possible permutations of x elements from a set of n elements is given by the following formula:

In this question:
5 people chosen from a set of 9. So

The roles can be assigned in 15120 ways.