Posted by Frank (64.213.201.1) on April 25, 2001 at 18:20:22:
You are located in a building with two stories. There are three light switches on the first floor. There are three light bulbs on the second floor. How can you determine which light switch goes with which light bulb by only going to the second floor once?
Oh, there are no windows, and you are the only one there.
Let's see how many of you can get this one right.