Question

An emergency room has 12 nurses on staff. Each night a team of 5 nurses are on duty. How many different combinations of nurses can be chosen?

Answer 1

Explanation:

Out of the 12 choose 5

is 12 C 5 = 12! / ( 7! 5!) = 792 ways

Answer 2

792

Explanation:

we use the combination function to solve this, it is simply 12C5 or 12!/(5!7!)=792 combinations.