Question

The HCF of $5$ & $25$ is

• A. 1
• B. 5
• C. 25
• D. 50

Answer 1

The correct option is B 5

If a number is a multiple of another number , then their HCF will be the smaller number and LCM will be the larger number.

Here, $25$ is a multiple of $5$.
Therefore, HCF of $5$ and $25$ is $5$.

(OR)

Lets follow the prime factorization method

$5=5$

$25=5\times 5$

In above prime factorization, common factor is $5$.

Hence, $5$ is the HCF of $5$ and $25$.