Answer:
I have cities but no houses I have mountains but no trees I have water but no fish. What am I?
I am an odd number. Take away a letter and I become even. What number am I?
I am a delicious way of representing data.
I make billions of dollars selling windows. Who am I?
I am lighter than air, but a hundred people cannot lift me. Careful, I am fragile. What am I?
The answer I give is yes, but what I mean is no. What was the question?