2 rooms, one has 3 switches, one of these switches turns on a light bulb in the other room. how can you identify which switch turns on the bulb in the other room and you can only take one trip to that room.
N.B you cannot peak into the room, use any tools, ask for another's help ...etc
you may think there are only on and off as possibilities but think out of the box to create a third one (without ignoring the restrictions)
turn on one switch(s1) and leave it on for a while then turn it off then turn on another(s2)
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mewminator
2 rooms, one has 3 switches, one of these switches turns on a light bulb in the other room. how can you identify which switch turns on the bulb in the other room and you can only take one trip to that room.
N.B you cannot peak into the room, use any tools, ask for another's help ...etc
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