Answer:
You can see me when two prisons throw light from one side and other side but odd number?
What can you fill a room with that takes up no space?
What goes up the hill and down the hill, And spite of all, yet stand still?
A man is twenty years old but has only had five birthdays. How is that possible?
10 fish are in a tank. 2 Drown, 4 Swim away, and 3 Die. How many are left?
When is it bad luck to see a black cat?