Ah, finding the greatest common factor is like finding a happy little tree in a forest. For 36 and 81, we look for the largest number that can divide evenly into both. The greatest common factor for 36 and 81 is 9, like a gentle breeze on a sunny day.
1,2,3,4,6,8,9,12,18,24,36,72 factor of 72 1,3,9,27,and 81 is factor of 81
162 2, 81 2, 9, 9 2, 3, 3, 3, 3
A factor = a number which can be divided into the given number with no remainder Yes. It's the only factor of 81 (apart from 9, 27 and 81 itself).
The greatest common factor of 16 72 and 81 is 1.
9x9=81. Proving that one of the factor trees for 81 is 9xp.
81 27,3 9,3,3 3,3,3,3
81 27,3 9,3,3 3,3,3,3
81 27,3 9,3,3 3,3,3,3
The factors of 81 are: 1, 3, 9, 27, 81.
81 27,3 9,3,3 3,3,3,3
81 27,3 9,3,3 3,3,3,3
45 15,3 5,3,3 81 27,3 9,3,3 3,3,3,3
51 3,17 81 9,9 3,3,9 3,3,3,3 The GCF is 3.
It is 3*3*3*3 or 3^4.
. 68 . / \ 2 x 34 ..... / \ ... 2 x 17
It can be. 81 is a factor of 162.