Try this riddle.

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OscarRobinson

Gambusia
MFK Member
Feb 25, 2007
652
0
16
Philadelphia
You are standing outside of a room with no windows and the door is shut. On the wall outside of the room there are two light switches. Each switch turns on an a lightbulb inside of the room. Your task is simple. You must determine wich switch turns on which light. Here's the rules. You must flip both switches on before entering the room and you may only enter the room one time. How do you determine which switch turns on which light?
 
Turn one off before you enter. The rules say nothing about turning one off:)
 
Turn light switch 1 and 2on, wait a little. then turn light switch 1 off. Then run upstairs, see if it is on, then it is light switch number 2. But if it is warm, then it is light switch 1 but if it isnt on or warm then its light switch number 3
 
depending on where the lights are in the room, couldn't u just look at teh little gap at the bottom of the door, turn one switch on, then turn it off and switch the other one on, the brighter one is closer to the door
 
DIY a crasmatograph mass spectrometer and look right through the wall?.....What, thats what mcguyver would do.:ROFL:
 
How about opening the door before turning on lights.
 
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