Answer:
What can you stick between a 3 and a 4 so that the result is more than three but less than four?
What is yours but only used by others?
How is it possible to always find what your looking for in the last place you look?
An archaeologist unearths a coin bearing the inscription "57BC". How does he instantly know that it's a forgery?
If there are three apples and you take away two, how many do you have?
What is it that makes tears without sorrow. And takes its journey to heaven?