There are 3 lights (in one room) and 3 swtiches (in another
room), one for each, if you only enter into the light room
once. How can you find out which switch corresponds to which
light?
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Answer Posted / pavithra
switch on the first switch
leave it for 10 min
switch on the second
leave it for 5 min
switch on the third one
now enter into the room
the light which is warm is 2nd switch
the light which is cold corresponds to 1st switch
the light which is blowing belongs to the 3rd switch
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