Let U = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, r, s, t}
A = {0, 2, 4, 8, r, t}
B = {1, 3, 7, 8, 9, s, t}
Find the following:
-B′
A) {1, 3, 5, 6, 7, 9, s}
B) {1, 3, 5, 7, 9, s}
C) {0, 2, 4, 5, 6, r}
D) {0, 2, 4, 6, r}
E) None of these

Question

Quizplus · Accepted Answer

B′ represents the complement of set B in the universal set U. This means it includes all elements in U that are not in B. Since B = {1, 3, 7, 8, 9, s, t}, B′ will include {0, 2, 4, 5, 6, r}, which are all the elements in U not in B.