Beginning & Intermediate Algebra
n!−(n−3)!n! - (n−3)!
n(n−1)(n−2)n(n−1)(n−2)
n(n−1)(n−2)(n−3)!n(n−1)(n−2)(n−3)!
n(n−1)(n−2)(n−3)n(n−1)(n−2)(n-3)