Question

If A = {5, 6, 7, 8} and B = {7, 8, 9, 11}, then A ∪ B = _____.

• A. {5, 6, 7, 8, 9, 10, 11}
• B. {5, 6, 7, 8, 9, 11}
• C. {9, 11}
• D. {5, 6, 7, 8}

Answer 1

The correct option is B

{5, 6, 7, 8, 9, 11}

A ∪ B is the set that is defined as the elements either in A (or) B (or) both.

A ∪ B = {5, 6, 7, 8, 9, 11}