Question

A football team of 11 players is to be selected from a set of 15 players, 5 of whom can play only in the backfield, 8 of whom can play only on the line, and 2 of whom can play either in the backfield or on the line. assuming a football team has 7 men on the line and 4 men in the backfield, determine the number of football teams possible.

Answer 1

may be one......... hope I am right