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Solution to:
Lighting Bulb
To find the correct switch (1, 2, or 3), turn switch
1 to 'on' and leave it like that for a few minutes. After that you turn
switch 1 back to 'off', and turn switch 2 to 'on'. Now enter the room. If
the light bulb is lit, then you know that switch 2 is connected to it. If the
bulb is not lit, then it has to be switch 1 or 3. Now touching for short
the light bulb, will give you the answer: if the bulb is still hot, then
switch 1 was the correct one; if the bulb is cold, then it has to be switch 3.
 back to the puzzle
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