Question

2.
Determine the HCF of the following by prime factorisation
(i) 225, 450
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Answer 1

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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.