I got this logic puzzle from an e-mail from a friend, and spent hours thinking of an answer. It really made me wanna look for an answer. So thought I'd put it here as well.
Imagine you are in a room with three switches. The lamps (bulbs) corresponding to each of them are inside a nearby room. If you are allowed to enter the room with the lamps only once, given that you can turn on/off the switches as you wish, how would you find which switch turns which lamp on/off?
Note that when you are outside the room with the lamps there is no way you could know if the lamps are on or off, and you are allowed to enter that room only once.
Actually, there is a quite simple and logical answer to this. Who could find it?

Imagine you are in a room with three switches. The lamps (bulbs) corresponding to each of them are inside a nearby room. If you are allowed to enter the room with the lamps only once, given that you can turn on/off the switches as you wish, how would you find which switch turns which lamp on/off?
Note that when you are outside the room with the lamps there is no way you could know if the lamps are on or off, and you are allowed to enter that room only once.
Actually, there is a quite simple and logical answer to this. Who could find it?
