Question

Let \(X=\{-1,2,5,8,11\}\), \(Y=\{4,6,8\}\), and suppose different elements \(2,5,8\) of \(X\) have the same image \(4\). What type of function is it with respect to the one-one property?

Options

• Onto

• One-one

• Bijective

• Many-one

Answer 1

The different domain elements \(2,5,8\) share the same image \(4\). This directly satisfies the condition for a many-one function and violates the one-one condition.