Question

find the hcf of 12and15​

Answer 1

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HCF = 3

Explanation:

12 = 2²×3

15 = 3 × 5

since 3 is common factor.

3 is the HCF

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Answer 2

Answer:

The HCF of 12 and 15 is 3.

Step-by-step explanation:

Given: The numbers are 12 and 15.

We have to find the HCF of the above numbers.

• For this, we will first find the factors of the above numbers.
• And then the largest positive integer that divides each of the given integers will be the HCF of the above numbers.

We are solving in the following way:

We have,

The numbers are 12 and 15.

The factors of 12 are: $1, 2, 3, 4, 6, 12$

The factors of 15 are: $1, 3, 5, 15$

From the above, we can see that 3 is the largest positive integer that divides each of the above integers

So, the greatest common factor(HCF) is 3.