Evaluate the expression. Show your work

Question

C(7, 4) · C(9, 4)

Answer 1

C(7, 4) = 7! / (4!(7-4)!) = 35
C(9, 4) = 9! / (4!(9-4)!) = 126

35 * 126 = 4410

Therefore, C(7, 4) · C(9, 4) = 4410.