Logic Riddles

Question: This sentence is false.

Is the preceding sentence true or false?

Question: An empty bus pulls up to a stop and 10 people get on. At the next stop 5 people get off and twice as many people get on as at the first stop. At the third stop 25 get off.

How many people are on the bus at this point?

Question: Anna can drive a Toyota, but not a Prius.
She can marry Otto, but not Peter.
She can borrow or rob, but not share and steal.

Can Anna pull up if I pull up?

Question: A man is found dead in a phone booth in a pool of blood. The glass on either end of the phone booth is broken and the phone is hanging. Just outside of the phone booth is a bucket and a stick.

What happened?

Question: Two men are facing each other alone in a large room. There is a clock on the wall. One man, who thinks of himself as a prophet, says to the other, "In five minutes you'll be stabbed in the back."

The other man is very distraught and stares at the clock. After five minutes he is stabbed in the back.

What happened?