Question

What is the HCF of $18,54,81$?

Answer 1

Find the HCF of $18,54,81$.

HCF of two or more numbers is the greatest number than divide the numbers exactly.

Factors of $18$ are $1,2,3,6,9,18$.

Factors of $54$ are $1,2,3,6,9,18,27,54$.

Factors of $81$ are $1,3,9,27,81$.

HCF of $18,54,81$ is $9$.

Hence, HCF of $18,54,81$ is $9$.