Let S be the universal set, where: S = {1, 2, 3, ..., 23, 24, 25} |3| 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 (AN C) N Bº

Let U = { a, b, c, d, e, 1, 2, 3 } be the universal set. Let A = {c, e, a, 1, 2} and B = {3, e, b}. List the elements of the following sets. If there is more than one element write them separated by commas. A = { } (AUB) = { AnB = { } }

Let S be the universal set, where: S = {1,2, 3, ..., 18, 19, 20} Let sets A and B be subsets of S, where: Set A = {1, 2, 5, 6, 9, 10, 13, 16, 17, 18, 19, 20} Set B = {1,4, 5, 7, 8, 9, 10, 12, 16, 19} Find the following: LIST the elements in the set (AU B): (AUB) = { } Enter the elements as a list, separated by commas. If the result is the empty set, enter DNE LIST the elements in the set (An B): (An B) = {| Enter the elements as a list, separated by commas. If the result is the empty set, enter DNE } You may want to draw a Venn Diagram to help answer this question.

Let S={1,2,3,...,18,19,20}be the universal set.Let sets A and B be subsets of S, where:Set A={6,8,10,12,14,15,17,19}Set B={2,3,5,6,7,8,9,11,12,14,15,17,18}Determine the following:n(A)=   ?n(A¯)=   ?n(B)=  ?n(A∩B)=  ?n(A∪B)=  ?