Suppose U = {1, 5, 7, 9, 10, 11, 15, 16, 18} is the universal set and A = {1,7,11,15,16}. What is A?

Question

Choose the correct answer.

A. {5,9,10,18} **B. {5, 9, 10, 11, 18}

C. {5, 7, 9, 10, 18} D. {1, 9, 11, 16}

Answer 1

The correct answer is B. {5, 9, 10, 11, 18}. This is because A is the set that contains the elements from the universal set U that are also in set A.