Question

Let R be a relation defined as
R = {(x, y): y = 2x, x is natural number < 5} then Range of R is given as,

• A. {2, 4, 6, 8, 10}
• B. {2, 4, 6, 8}
• C. {1, 2, 3, 4}
• D. N

Answer 1

The correct option is B

{2, 4, 6, 8}

R = {(x, y): y = 2x, x is natural number < 5}

Relation R in roster form is { (1,2),(2,4),(3,6),(4,8)}

Range of relation R is the set of II elements of the ordered pairs

{ (1,2),(2,4),(3,6),(4,8)} So range is {2, 4, 6, 8}