Question

find hcf of 45,40,42

Answer 1

well the hcf of 45,40 and 42 is 1 as they have no prime number in common as their factor.

Answer 2

Answer:

The HCF of 45, 40, and 42 is 1.

Step-by-step explanation:

Given: The numbers are 45, 40, and 42.

We have to find the HCF of the above numbers.

• As we know that, 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 45, 40, and 42.

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

The factors of 40 are: $1, 2, 4, 5, 8, 10, 20, 40$

The factors of 42 are:$1, 2, 3, 6, 7, 14, 21, 42$

The factors of 45 are: $1, 3, 5, 9, 15, 45$

From the above, we can see that 1 is the highest number among all the common factors of the given numbers.

So, the greatest common factor(HCF) is 1.