Answer:
I am an odd number. Take away one letter and I become even. What number am I?
The Titanic is still here. What am I?
When young, I am sweet in the sun. When middle-aged, I make you gay. When old, I am valued more than ever. What am I?
Goes over all the hills and hollows, Bites hard, but never swallows.
What building has the most stories?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.