Answer:
198, 297, 396, 495, 594, 693, 792, 891, 990
Explanation:
For example,
the multiples of 4 are: 4, 8, 12, 16, ...
the multiples of 5 are: 5, 10, 15, 20, 25, ...
Now, the multiples of 99 would be:
99 * 1 = 99
99 * 2 = 198
and so on....
We need the multiples of 99 those that are 3 digits only!
99 * 1 = 99 (2 digit, so disregard)
99 * 2 = 198 (3 digit, we need this)
...
99 * 10 = 990 (3 digit, we need this)
99 * 11 = 1089 (4 digit, we disregard)
So, anything over that will give us 4 digit and more, so we only need multiples of 99:
99 * 2
99 * 3
99 *4
....
99 * 10
They are 198, 297, 396, 495, 594, 693, 792, 891, 990