Answer:
What is yours but only used by others?
Which bank is not used for storing money?
An archaeologist unearths a coin bearing the inscription "57BC". How does he instantly know that it's a forgery?
Feed me anything and I will live.. But feed me with water and I will die...
What is the largest $ amount of change you can have in your pocket without having exact change for $1?
What goes around and around the wood, but never goes into the wood?