Question

State True or False.

Function $f:N\to N$ (N is set of the natural numbers)defined by $f\left(n\right)$ $=2n+3$ for all $nϵN$ is surjective.

• A. True
• B. False

Answer 1

The correct option is B False

$f\left(n\right)=2x+3$

$f\left(1\right)=5$ , $f\left(2\right)=7$

INTO function

Not Surjective.