There are three light switches and only one of them controls a light bulb in another room. You must figure out which switch it is. You may turn on and off all the switches as many times as you like, but you may only go into the room with the light bulb once.
How will you do it?
2 comments:
The room you are standing in is the one with the light bulb.
Nope. You cannot see the light bulb at all when you are at the switches.
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