Answer:
What is black when you buy it red when you use it and gray when you throw it away?
What flies without wings?
The more I dry, the wetter I get. What am I?
I am the building with the most number of stories. What am I?
What force and strength cannot get through, I with my unique teeth can do. What am I?
What did the piece of wood say when he saw the screwdriver and screws approaching?
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic