1. Natural numbers:
1, 2, 3, 4, 5, 6...
2. Whole numbers:
0, 1, 2, 3, 4, 5...
3. Odd numbers:
1, 3, 5, 7, 9...
4.Even numbers:
2,4,6,8,10...
5. Prime numbers:
2, 3, 5, 7, 11, 13...
6. Integers:
There are two type of integers.
1. Positive integers
2. Negative integers
1. ... -4, -3, -2, -1, 0, 1, 2, 3, 4...