What has many keys but can’t open a single door?

What building has the most stories?

What gets bigger when more is taken away?

What tree do we all carry in our hands?

What has words but never speaks?

What is the smallest room in the world? (hint: word that ends with "room")

If you're running a race and you pass the person in second place, what place are you in?

A boy is walking down the road with 3 people in his family. One of them is a doctor. While the boy is the doctor’s son, the doctor is not the boy’s father. Then who is the doctor?

What kind of band never plays music?

What has a head and a tail but no body?

How many months have 28 days?

It's black, but you say it's clean. It's white, but you say it's dirty. What is it?

I have keys without key locks. I have space without rooms. You can enter but you cannot go outside.