The greatest common factor of 36, 81 and 18 is 9
9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99.
9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99 and on to infinity.
9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99, 108 . . .
36 and 45 or 9 and any multiple of 9
gcf(81, 36) = 9 gcf(27, 54) = 27 gcf(81, 36, 27, 54) = 9
The greatest common factor of 36, 81 and 18 is 9
The factors of 36 are: 1, 2, 3, 4, 6, 9, 12, 18, 36 The factors of 54 are: 1, 2, 3, 6, 9, 18, 27, 54 The factors of 81 are: 1, 3, 9, 27, 81
9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99.
1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 324
9 18 27 36 45 54 63 72 81 909, 18, 27, 36, 45, 54
1, 2, 3, 4, 6, 9, 12, 18, 36 1, 2, 3, 6, 9, 18, 27, 54 1, 3, 9, 27, 81
This is not a geometric series since -18/54 is not the same as -36/12
18 & 81, 27 & 72, 36 & 63, 45 & 54 all fit the description.
18 + 36 + 45 + 9 + 9 + 54 + 27 + 72 + 81 = 351
9, 18, 27, 36, 45, 54, 63, 72, 81, 90, 99 and on to infinity.
81