Question

What is the HCF of $15$ and $20$ and how?

Answer 1

Find the HCF of $15$ and $20$ .

HCF of two or more numbers is the greatest number that divides the numbers exactly.

Factors of $15$ are $1,3,5,15$.

Factors of $20$ are $1,2,4,5,10,20$.

HCF of numbers $15,20$ is $5$.

Hence, HCF of numbers $15,20$ is $5$.