Question

The relation R is defined on the set of natural numbers as {(a, b) : a = 2b}. Then, R^-1 is given by ____________.

Options

•  {(2, 1), (4, 2), (6, 3),….}

• {(1, 2), (2, 4), (3, 6), ……..}

• R^-1 is not defined

• None of these

Answer 1

The relation R is defined on the set of natural numbers as {(a, b) : a = 2b}. Then, R^-1 is given by {(1, 2), (2, 4), (3, 6), ……..}.