Question

find the HCF of 42,54 and 64​

Answer 1

The HCF of 42, 54 and 64 is 6

Answer 2

Given,

The HCF of $42,54$ and $64$

We have to find the highest common factor of given numbers

First we have to write the prime factors of this given numbers

After that take common factors of all of these given numbers

Prime factor of $42= 3\times2\times7$

$54= 2\times3\times3\times3$

$64= 2\times2\times2\times2\times2\times2$

Here we have to common factor of these  three numbers

HCF of $42,54$ and $64$ is $2$

Therefore, the HCF of $42,54$ and $64$ is $2$.