As you can see when you list out the factors of each number, 5 is the greatest number that 5, 15, and 30 divides into.

What is the greatest common factor of 30 15 and 5?

Find the factor pairs of 30 30 where x⋅y=30 x ⋅ y = 30 . List the factors for 30 30 . List all the factors for 5,15,30 5 , 15 , 30 to find the common factors. The common factors for 5,15,30 5 , 15 , 30 are −5,−1,1,5 - 5 , - 1 , 1 , 5 .

What is the GCF of 15 and 30?

Answer: GCF of 15 and 30 is 15.