1, 2, 4, 5, 8, 10, 16, 20, 40, 80
They are: 1, 2, 4, 8 and 16
The whole-number factors of 80 are 1, 2, 4, 5, 8, 10, 16, 20, 40, and 80.
1, 2, 4, 5, 10, 20
Each of these numbers will go evenly into 80: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80.
-96
2 x 4 x 10 = 80
80= 5x5x3+5
Just 1.
Average of five numbers is 82 so their sum is 82*5 = 410. Average of four of them is 80, so their sum is 80*4 = 320. So the fifth number is 410 - 320 = 90.
These are the whole numbers that go into 400 evenly: 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400.
It is: 80 and 100