Answer:
Mr. Smith has two children. If the older child is a boy, what are the odds that the other child is also a boy?
An archaeologist unearths a coin bearing the inscription "57BC". How does he instantly know that it's a forgery?
What can you fill a room with that takes up no space?
Dora died at a very old age on her 24th birthday. How can this be?
If a rooster lays an egg on the exact peak of a barn, which side does it fall?
As round as an apple. As deep as a cup. All the king's horses can't pull it up.