810, 1620, 2430, 3240, 4050 +810 . . .
I don't have a list of choices in front of me, so I can't tell you what numbers are not factors of 810. I can, however, list the factors of 810 for you. They are: 1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, and 810.
The greatest common factor of 100 , 810 = 10
810
It is: 810
It is: 810+50+150 = 1010
5% of 810= 5% * 810= 0.05 * 810= 40.5
17% of 810= 17% * 810= 0.17 * 810= 137.7
810
800
810
810
810/2 = 405 810/3 = 270 * 810/4 = 202.5 810/5 = 162 810/6 = 135 810/9 = 90 810/10 = 81 so 810 is divisible by 2 3 5 6 9 10 but not by 4
810
810
810-56 = 754
810-5 = 805