In this part, we find the HCF of given numbers.

Let us take an example shown in the video.

We want to find HCF of 455 and 42

Now, divide 455 by 42, we get

10 as quotient and 35 as remainder.

Again, we divide 42 by 35, we get

1 as quotient and 7 as remainder.

Again we divide 35 by 7 we get

5 as quotient and 0 as remainder.

When we get remainder 0 and the number from which we divide last time, is the HCF

So, HCF(455, 42) = 7

In this way, we find the HCF.

Again,

455 = 42*10 + 35     {break 455 in terms of 42}

42 = 35*1 + 7           {break 42 in terms of 35}

35 = 7*5 + 0             {break 35 in terms of 7}

So, HCF(455, 42) = 5

Hope you got the point.