Question

What is the HCF of 3,15,45?

Answer 1

Answer:

For 5 Hcf is 5

For 15 Hcf is 5

for 45 Hcf is 9

Answer 2

Answer:

List all the factors for 15,30,45 15 , 30 , 45 to find the common factors. The common factors for 15,30,45 15 , 30 , 45 are 1,3,5,15 1 , 3 , 5 , 15 . The GCF (HCF) of the numerical factors 1,3,5,15 1 , 3 , 5 , 15 is 15 .