Tricky riddles for teens

If 20 blackbirds are on a fence and you shoot one, how many remain?

You are a bus driver. The bus starts out empty. At the first stop 4 people get on. At the second stop, 8 people get on and 3 get off. At the third stop, 2 people get off and 4 get on. The question is, what color are the bus driver's eyes?

How many months have 28 days?

Presume that you do not know what a rhino looks like. Now the question goes like this: If one day while walking in a forest with two of your close friends, one friend shows you an elephant and tells that this is a rhino, and another friend shows you a hippopotamus and tells you that this is rhino, who would you believe and why?

There are different types of stones available. However, there is one type of stone you cannot find in the ocean! What is that?

There is a boat with a ladder attached to it, the ladder is eight feet tall. If the water rises four feet how much of the ladder will be on top of the water?

What jumps higher than a building?

The red house is on the white street, and the blue house is on the red street. Where is the white house?

Tom was a clerk at a butcher shop. His height is six feet and three inches. He wear shoes sized number 12. What does he weigh?

What do you call a bear without an ear?