Consider the following for the two (02) items that follow: Let f =...

The given function is $f = \{(1,1), (2,4), (3,7), (4,10)\}$.

The domain of $f$ is $\{1, 2, 3, 4\}$ and the range of $f$ is $\{1, 4, 7, 10\}$.

Since each element in the domain has a distinct image in the range, $f$ is a one-one function. Statement I is correct.

If the codomain is the set of natural numbers, the range $\{1, 4, 7, 10\}$ is a proper subset of the codomain. Since the range is not equal to the codomain, $f$ is not an onto function. Statement II is incorrect.

Therefore, only Statement I is correct.

Answer: I only