Answer:
51
Step-by-step explanation:
A composite number is one in which the number is made up of 2 or more primes. The primes can be the same.
A prime number is divisible only by itself and 1. So here are some composites
Composites
20: 2 * 2 * 5 [no even number is a prime number except 2].
45:3 * 3 * 5
9: 3 * 3 The primes can be the same.
51: 3 * 17
Primes
2 3 5 7 11 13 17 19 ...and more to follow.
41 can only be divided by itself and 1. It is a prime.
29 can only be divided by itself and 1. It is a prime.
