With A controls one of the room and switch B controls the other room. With AC controls both the rooms.

With A controls one of the room and switch B controls the other room.

1.	With A controls one of the room and switch B controls the other room. With AC controls both the rooms.
Answer» Open the door. If the LIGHT is on, then switch number 2 controls it. If the light is off, then go and feel the bulb with your hand. If the bulb is hot, then switch number 1 controls it, and if the bulb is COLD, then switch number 3, the one you did not touch, controls it.Explanation:

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With A controls one of the room and switch B controls the other room. With AC controls both the rooms.​

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With A controls one of the room and switch B controls the other room. With AC controls both the rooms.