Extracted text: Let S be the universal set, where: S = {1,2, 3, ..., 23, 24, 25} Let sets A and B be subsets of S, where: Set A = {17, 19, 20, 21, 23, 25} Set B = {1, 2, 4, 5, 7, 8, 13, 14, 15, 21, 22, 25} Set C = {8, 9, 10, 11, 15, 16, 23, 24} Find the number of elements in the set (Anc)N B° n[(An C) N B°] =