Let us define each :
1. Natural numbers : the positive integers (whole numbers) 1, 2, 3, etc., and sometimes zero as well.
2.Whole numbers: Whole Numbers are simply the numbers 0, 1, 2, 3, 4, 5, ... (and so on)
3. Positive integers: The positive integers, z+ , consist of the whole numbers beginning with one.
4. Counting numbers: Any number you can use for counting things: 1, 2, 3, 4, 5, ... (and so on). Does not include zero.
So we can say that whole numbers is the odd one out, since it includes 0 and others dont.
