Question

13. Find the HCF of:
(a) 27,81​

Answer 1

Step-by-step explanation:

(i) Find the prime factorization of 27

27 = 3 × 3 × 3

(ii) Find the prime factorization of 81

81 = 3 × 3 × 3 × 3

(III) To find the gcf, multiply all the prime factors common to both numbers:

Therefore, GCF = 3 × 3 × 3

(iv) GCF = 27

Answer 2

Answer:

HCF of 27 and 81 is 27

Step-by-step explanation:

we can see that 27 is a factor of 81

27*3 = 81

If one number is the factor of the other number, then HCF will be the smaller number.

So HCF = 27