Write down separately the prime and composite numbers less than 30.
prime 1 , 2 , 3 , 5 , 7 , 11 , 13 , 17 , 19 , 23 , 29
composite 4 . 6 . 8 . 9 . 10 . 12 . 14 . 15 . 16 . 18 . 20 . 21 . 22 . 24 . 25 . 26 . 27 . 28
composite 4 . 6 . 8 . 9 . 10 . 12 . 14 . 15 . 16 . 18 . 20 . 21 . 22 . 24 . 25 . 26 . 27 . 28