Question

HCF of 8,9,25 is what?​

Answer 1

Step-by-step explanation:

8 =1 x 2 x 2 x 2

9 =1 x 3 x 3

25=1 x 5 x 5

HCF =1

LCM = 1 x 2 x 2 x 2 x 3 x 3 x 5 x 5 = 1800

Answer 2

Given:

Three numbers 8, 9 and 25.

To find:

The HCF of the given numbers.

Solution:

To solve the question, first of all, we need to know that the HCF of two or more numbers a and b is equal to the highest common factor of both numbers.

So, proceeding to the question, we have three numbers 8, 9 and 25.

We make the prime factors of the given numbers one by one.

prime factors of 8 = 1 × 2 × 2 × 2

prime factors of 9 = 1 × 3 × 3

prime factors of 25 = 1 × 5 × 5

Thus, we can see that there is only one common factor between the 8, 9 and 25 which is 1.

Hence, the HCF of 8, 9 and 25 is 1.