How many of the positive factors of 45 , 16 and how many common factors are there in numbers? Choose the correct choice from the following:  A) 1  B) 2  C) 3  D) 4  E) 5
factors of 45 - 1, 3, 9, 15 and 45   factors of 16 - 1 , 2, 4, 8 and 16   Comparing both, we have three common factors of 45,16-1   1nswer(1)
<result>A</result>
How many of the positive factors of 45 , 16 and how many common factors are there in numbers?