How many of the positive factors of 15 , 45 and how many common factors are there in numbers?	Answers
A) 1	B) 2	C) 3	D) 4	E) 5
factors of 15 - 1, 3, 5, and 15   factors of 45 - 1, 3, 9, 15 and 45   3omparing both, we have three common factors of 45,16-3   Answer 3
<result>C</result>
How many of the positive factors of 15 , 45 and how many common factors are there in numbers?