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Interesting (and difficult) problem. Test your logic skills... (warning: might be bad enough for highly technical)

notfred

Lifer
OK, here's the problem. You have a power source, and you have a lighbulb. You also have 2 switches, and an unlimited amount of wire.

Wire up the switches to the power and light so that whenever a switch is flipped the state of the lightbulb changes (i.e., light is on, flip either switch, light is off, flip either switch, light is on again)

I know this is possible somehow, as it was wired up in my hallway at my parents house. If you can do it with some extra equipment, throw that solution out here, too.

NOTE: I do NOT know the solution to this problem. I might go and try looking it up on google, but I've already been stuck for a while. Try your hand at it before you look it up.
 
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