Subject: You are in a room with three light switches connected to a light bulb in ..

I was asked a question but unable to answer. I would be grateful if u could
help me to find the solution.

Prob:

You are in a room with three light switches connected to a light bulb in
another room.  You can't see the other room, there are no windows or
whatsoever.  You can try the switches as much as you want, but you are only
allowed to go in the other room once.  After that you have to tell which of 
the
three switches is the switch of the bulb.  You know that each switch just
operates one bulb each.

Re: You are in a room with three light switches connected to a light bulb in ..