12. Which is the common factors of 45 and 90?
A. 1, 3 and 9
B. 1, 6 and 9 C. 1, 3 and 6
D. 1, 9 and 11
13. Fifty-four boys and seventy-two girls formed group for a coin-collecting project. What are the
possible equal numbers of member in the groups that the boys and the girls can have?
A. 2, 3, 6, 9 and 12 B. 2, 3, 6, 9 and 18 C. 2,3,9 and 20 D. 2, 3, 9 and 24

patulong po yung matinong sagot​