Question

Find the HCF by prime factorisation method 225 , 450

Answer 1

Given: Two numbers 225 and 450

To find: HCF of both numbers?

Solution:

So we have given two numbers:  225 and 450

Now factors of 225 are:

             225 = 3 x 3 x 5 x 5

And factors of 450 are:

            450 = 2 x 3 x 3 x 5 x 5

So the highest common factor will be:

            3 x 3 x 5 x 5 = 225

Answer:

So the highest common factor will be 225.

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Answer 2

Answer:

225 = LCM OF 225

( 5 X 5 X 3 X 3 )

= > 5 X 3

= > 15 .

Step-by-step explanation: