Can you answer?

You have got three switches outside a room and only one of them can light the bulb inside it... You get only one chance to step inside the room to check.. The room is fully covered and no light is seen from outside...

How would you declare which switch is connect to the bulb?

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quitwhendone · M

I give up. How?

honeydimples · 26-30, F

@quitwhendone turn on S1 and wait for few minutes then turn on S2 by turning off S1.. Now enter into the room... If the bulb is glowing its S2 if not it's either S1 or s3.. Now touch the bulb by bare hands if it's hot then S1 if not damn sure it's S3

quitwhendone · M

@honeydimples Yes, of course. I thought checking the heat of the bulb was involved but I didn't quite know that would work. Good riddle. You should post some others.

honeydimples · 26-30, F

@quitwhendone it's an IIM interview question

quitwhendone · M

@honeydimples What's IIM?

honeydimples · 26-30, F

@quitwhendone International Institute of Management

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quitwhendone · M

@ISpeakTheTruth You've got a point there.

honeydimples · 26-30, F

@ISpeakTheTruth haha then with smartphone torch we can find

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