Question

Find the greatest number which exactly divides 81 and 117

Answer 1

9 is the answer
hope it helps

Answer 2

Prime Factorizing 81 and 117. we get

81=3*3*3*3

117=3*3*19

Here... 3*3 is common in both.. there fore... 3*3=9 will be the greatest number dividing 81 and 117 ☺️