Answer:
I have numbers on my face but can't find 13 any place. What am I?
What building has the most stories?
I am always around you but often forgotten. I am pure and clean most of the time, but occasionally rotten. What am I?
I am free the first time and second time but the third time is going to cost you money.
I am good at concealing what's real and hide what's true. Sometimes I bring out the courage in you!
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.