Number is between 100 and 1000
The sume of the digits is 11.
The tens digit is less than the hundreds digit.
There are no zeros.
It says to list all the possible answers (which I found 19) but also asks, "my answer is______ because ______"
I think the answer is there isn't just one answer.
If the requirements are complete, I also found 19 candidates.
So supply the complete list as your answer as instructed.