Question

Find the greatest number which exactly divides 81 and 117

Answer 1

Find Prime Factorization of 81 and 117

i.e. 81 = 3 × 3 × 3 × 3

     117 = 3 × 3 × 13

The common factors are 3 × 3 =9

(HFC)Highest number which exactly divides 81 and 117 is 9.

Answer 2

Answer:

Maybe it's 9

9 is divided exactly 81 and 117b