Imagine you live in a two-storey house with the 3 light switches on level one and its corresponding 3 light bulbs on level two of the house.
So, if you are given only one chance to go up stair to checkout the 3 light bulbs and to determine which switch control which light bulb, how do you go about doing it?
This is no trick question. It can really be solved. ;-)
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2 comments:
My frens JT, AL, CN & more got the right answers! Congrats! ;-)
1. Switch on first light for at least 5 minutes.
2. Switch off the first light and on the second light.
3. Go up stair and touch one of the light bulbs that is not switch on.
4. If it’s warm, it’s the first light, if its not, it’s the third one that wasn’t switch on.
i is smart... ;D
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