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Turn switch A on and then wait for a couple minutes.

Turn switch A off and switch B on.

Go to the attic, one light bulb should be on, that's switch B.

Now feel the light bulbs, one should still be warm from having been turned on and then off, that's switch A.

The one that's off and cool is switch C.

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Q: There are 3 switches downstairsEach corresponds to one of the three light bulbs in the attic.You can turn the switches on and off and leave them in position.How would you identify which switch corresp?
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