Find C(10,3). Using the formula: C(10,3) = 10! / (3! × 7!).
Simplified: C(10,3) = (10 × 9 × 8) / (3 × 2 × 1) = 720 / 6 = 120.
There are 120 ways to choose 3 items from 10. Notice I only multiplied the first 3 terms of 10! and the denominator canceled the rest.