You are in a room which has 3 switches(viz.1,2&3).There is a bulb,outside the room. One of the switches will light the bulb.
The room is completely sealed(you can't even see the light from below the door). You are allowed to come outside the room only 1nce .You have unlimited time.
Find out the switch of the bulb.
| Originally posted by :SUMIT JIWNANI | ||
| " | You are in a room which has 3 switches(viz.1,2&3).There is a bulb,outside the room. One of the switches will light the bulb. The room is completely sealed(you can't even see the light from below the door). You are allowed to come outside the room only 1nce .You have unlimited time. Find out the switch of the bulb. |
" |
am eager to know tell the answer
is it third switch
knvv sri vidya.....u said it is the 3rd switch........ how? pls explain reason
as per me.....I can come out of the room only once.....so I will switch on all 3 switches.....its not written in the ques that we can't.....one of them put on the bulb....my purpose will be solved.
first i will put on the first switch and after sometime say one minute i will switch off the first and put on the second switch and will came out of the room.
if the bulb is lighting then it is the second because i came after switching the second. if the bulb is not lighting then it may be first or third then i will touch the bulb whether it is hot or cold if it is hot then the switch is first otherwise the switch is third.
am i correct sumit
sir,what is the answer ,can u tell us please???
what i answered is correct.
that was cool amar!
waiting 4 the answer
thanks sumit. but i am Amar not Amit.
thats a smart answer
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