Answer:
When does 4 - 1 = 5 ?
An archaeologist unearths a coin bearing the inscription "57BC". How does he instantly know that it's a forgery?
How far can a man hike into the forest?
What moves and touches water but doesn't get wet?
What starts with an E, ends with an E & only contains one letter but is not the letter E
What is always coming but never arrives?