Q , . . . ,n). Let k be an uestion 5: Let n > 3 be an integer and consider the set S = {1,2 integer with 2S kn 2. In this question, we consider subsets A of S for which |Al k and 1,2 A. Let N denote the number of such subsets. Use the Sum Rule to determine N. Use the Complement Rule to determine N . Use the above two results to prove that n 2 k-k-2