1, 2, 4, 8
the set of factors
1,2,3,5,6,10,15,30
1,2,3,4,6,12
I'm pretty sure the answer would be 1,2,4,16 (:
We can't answer this accurately if you don't tell us the groups to choose from.
13 and 19 aren't composite. 1,2,5,10 1,13 1,2,3,6,9,18 1,19
A composite number has three or more factors.
Factors.
composite
All numbers have factors. The whole number factors of a composite number are the integers that combine in a multiplication sentence to make that number. In the sentence 5 x 6 = 30, 5 and 6 are factors of 30.
Any whole number that has other factors besides 1 and itself is called a composite number.
A prime number is a whole number that has two factors which are itself and one. where as, A composite number has factors in addition to one and itself.