Question

Let A={1, 2, 3} and B={2, 3, 4}, then which of the following relations is a function from A to B?

• A. {(1, 2), (2, 3), (3, 4), (2, 2)}
• B. {(1, 2), (2, 3), (1, 3)}
• C. {(1, 3), (2, 3), (3, 3)}
• D. {(1, 1), (2, 3), (3, 4)}

Answer 1

The correct option is C {(1, 3), (2, 3), (3, 3)}

In the given options only option (c) satisfies the condition of a function. Hence, option (c) is a function.