Question

Multiple choice question :

Let A = {1, 2, 3, 4} and B = {4, 8, 9, 10}. A function f: A → B given by f = {(1, 4), (2, 8), (3, 9), (4, 10)} is a

Options

• Many-one function

• Identity function

• One-to-one function

• Into function

Answer 1

One-to-one function

Explanation;

Different elements of A have a different image in B.

∴ It is a one-to-one function.