Question

which numbers
are not prime number​

Answer 1

Answer:

4,6,8,9,10,12,14,15,16,18,20.. rtf are not prime number.

prime number are number that have only two factors. 1 and themselves.

Answer 2

Answer:

2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97