The natural numbers are the ones we use in everyday life to count or order.
The set of natural numbers is represented by ℕ and is made up of: {0,1,2,3,4,5,6,7,...,}
So, the answer is:
* Zero and the positive integers
The set of integers is made up of the natural numbers, their opposites (negative) and zero:
{,...,-4,-3,-2,-1,0,1,2,3,4}
Basically, whole numbers are those that have no decimal part