Which is NOT a prime number?

Answer 1

There aren't any choices, so these are the first few composite numbers: 2, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 26, 27, 28, 30, 32, 34, 35, 36, 38, 40, 42, 44, 45, 46, 48, 49, 50, 52, 54, 56, 58, 60...

Answer 2

A Prime number is any number that only has one and itself as factors. Threfore, any number taht has more than two factors is not prime. Check the the factors of a number to tell if it is prime or not.