Question

Find HCF of 18,54,81

Answer 1

Answer:

9

The HCF of 18, 54 and 81 is 9.

Answer 2

Answer:

The HCF of 18, 54, and 81 is 9.

Step-by-step explanation:

Given: The numbers are 18, 54, and 81.

We have to find the HCF of the above numbers.

• As we know, the HCF (Highest Common Factor) of two or more numbers is the highest number among all the common factors of the given numbers.
• HCF is also known as the greatest common factor.

We are solving in the following way:

We have,

The numbers are 18, 54, and 81.

First, we will find the factors of the above numbers.

The factors of 18 are: $1, 2, 3, 6, 9, 18$

The factors of 54 are: $1, 2, 3, 6, 9, 18, 27, 54$

The factors of 81 are: $1, 3, 9, 27, 81$

From the above, we can see that 9 is the highest number among all the common factors of the given numbers.

So, the greatest common factor(HCF) is 9.