Question

Let A = {1, 2, 3, …, 30} and R be the relation “is one-fifth of” on A. Then the range of R is

• A. {5, 10, 15, 20, 25, 30}
• B. {1, 2, 3, 4, 5}
• C. {1, 2, 3, 4, 5, 6}
• D. {1, 2, 3, 4, 5, 6, 10, 15, 20, 25, 30}

Answer 1

The correct option is A

{5, 10, 15, 20, 25, 30}

The range of the relation R is the set of all second elements of the ordered pair in a relation R. Here R = {(1, 5), (2, 10), (3, 15), (4, 20), (5, 25), (6, 30)}

Range is {5, 10, 15, 20, 25, 30}