number

a. integer

....., -3, -2, -1, 0, 1, 2, 3, ......

b. natural numbers

0, 1, 2, 3, 4, 5, 6, 7, 8, ......

c. natural numbers

1, 2, 3, 4, 5, 6, 7, 8, ....

d. even number

0, 2, 4, 6, 8, 10, 12, 14, .........

e. odd number

1, 3, 5, 7, 9, 11, 13, 15, 17, ........

f. primes

2, 3, 5, 7, 11, 13, 17, 19, 23, ..............