Question

Which is a composite number 29,21,37,43?

Answer 1

21

Explanation:

a composite number can be formed when having more that just 2 factors

Ex: 21

1 times 21

3 times 7

But the other number is prime it only has 2 factors 1 and the number by it self

Hope this helps

Answer 2

21 because 7 and 3 along with 1 and 21 can be multiplied