Question

What is the greatest commen factor of 65 and 39

Answer 1

1 3 13 39 are the commen factors

Answer 2

Going through the factors of 39:
1, 3, 13, 39

Now, the only numbers that goes into 65 without a remainder are 13 and 1.

Since 13 is greater, it is the GCF.

Hope this helped!