Answer:
Dora died at a very old age on her 24th birthday. How can this be?
An archaeologist unearths a coin bearing the inscription "57BC". How does he instantly know that it's a forgery?
What is as big as you are and yet does not weigh anything?
A claustrophobic person gets on a train. The train enters a tunnel just as it is leaving the station. Where is the best place for him to sit?
What was the longest river in the world before the Amazon River was discovered?
A red house is made out of red bricks. A blue house is made out of blue bricks. What is a green house made out of?