Question

HCF of 18,27 by prime factorisation method​

Answer 1

Step-by-step explanation:

18 = 2 × 9

= 2 × 3 × 3

27 = 3 × 9

= 3 × 3× 3

Common factors = 3 × 3

So HCF = 3 × 3 = 9

So the HCF of 18 , 27 is 9

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Answer 2

Answer:

HCF of 18,27 = 9

Step-by-step explanation:

We are given two integers = 18 and 27.

To find : HCF of 18,27 by Prime Factorization

Solution :

Since we know that

Prime factorization of 18  = 2 x 3 x 3

Prime factorization of 27 = 3 x 3 x 3

From the prime factorization of 18 and 27 we can observe that the common factors are = 3 x 3

So the HCF is = 3 x 3 = 9

Hence we can say that the Highest Common Factor of 18 and 27 is 9.

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