Question

Are all whole numbers are also integers?

Answer 1

Yes, if a number is a whole number, then it's an integer

Answer 2

This is because the set of integers is

{..., -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, ...}

and the set of whole numbers is

{0, 1, 2, 3, 4, 5, ...}