There are 10 movies that Greg would like to rent but the store only allows him to have 4 movies at one time. In how many ways can Greg choose 4 of the 10 movies?
A)40
B)210
C)10,000
D)5040

Question

Quizplus · Accepted Answer

The number of ways to choose 4 movies out of 10 is calculated using the combination formula, which is C(n, k) = n! / [k!(n-k)!], where n is the total number of items, k is the number of items to choose, and "!" denotes factorial. Here, n=10 and k=4, so the calculation is C(10, 4) = 10! / [4!(10-4)!] = 210.

There Are 10 Movies That Greg Would Like to Rent