Question

find the hcf of 18,54,81​

Answer 1

Answer:

9

Explanation:

18=2x3x3

54=2x3x3x3

81=3x3x3x3

So 3x3 is common in all cases therefore 9 is the hcf

Answer 2

Answer:

9

Explanation:

18 - 1,2,3,6,9,18

54 - 1,2,3,6,9,18,27,54

81 - 1,3,9,27,81

9 is common in all the three numbers. Therefore 9 is the answer