checking 2 C if this is solved correctley?

Question

Ms. Andrew ask her class groups to make posters for the bulletin board. She told them to draw, color, or past 42 stars on each poster board. The only rule was that the stars had to be in equal groups and the number of starss in each group had a to be prime. How many groups of stars might be on the poster, and how many stars are in each group?

thank u all for confirming my answer; many of you came very very close but only one so is %100 correct so far.

Answer 1

The prime factorization of 42 is 2 * 3 * 7

So there could be 6 groups of 7, 14 groups of 3, or 21 groups of 2.

Answer 2

21 groups of 2 stars
14 groups of 3 stars
6 groups of 7 stars

list the prime numbers up to 42 and then see which of these numbers are divisible by 42. This number will give you the number of posters, so 21 posters with 2 stars on each is the first of three answers

Answer 3

7 stars in 6 groups. 7 is prime and 7*6 would be 42 stars

Answer 4

21 groups 0f 2 stars
15 groups of 3 stars
6 groups of 7stars

Answer 5

its six rows of seven stars. i am not 100% possitive, as i jus had it pop into my head... but try it out, my mental picture worked