07-19-2007, 03:47 AM
Heres one. There are 3 doors and inside each one is a light bulb. There are 3 switches outside the doors, but the doors are closed and you dont know which switch lights up the bulb in which door. You can do anything you want to the switches (except rewiring :-P), but after you are done and you open the doors, you cant do anything to the switches. Then, you need to try to figure out which switch goes to which door.
HINT: If you leave 2 on and 1 off, you wont know which one controls one of them that is on, and vice versa. think harder!!
HINT: If you leave 2 on and 1 off, you wont know which one controls one of them that is on, and vice versa. think harder!!