Simple Discrete Mathematics Problem:

There is a two-storey building. In the first floor of the building are three switches. Only one of the switches is connected to the lights on the second floor. How would you know which switch is connected to the second floor lights when you can only go up once?

Question

Simple Discrete Mathematics Problem:

There is a two-storey building. In the first floor of the building are three switches. Only one of the switches is connected to the lights on the second floor. How would you know which switch is connected to the second floor lights when you can only go up once?

anonymous · Answer

lol

hartnn · Answer

isn't it same as 3 light bulbs and wall riddle ?

anonymous · Answer

here is a hint:
you cannot do it anymore

anonymous · Answer

why cannot?

anonymous · Answer

@hartnn no idea

anonymous · Answer

once the puzzle is solved i will say why not

hartnn · Answer

ok, then i'll answer....
switch on any 1 ,say 1st light for few minutes , then turn it off and turn on 2nd light
then go and check on 2nd floor
if the light is on, its 2nd 
if the light is 'hot' ,and off its 1st
if the light is cold and off its 3rd

anonymous · Answer

it's been solved huh. then i'll think of something original

anonymous · Answer

and it will not work with modern cfl bulbs since they do not give off much heat

hartnn · Answer

^ than i thank him he didn't mention that the bulbs were cfl ;)

anonymous · Answer

neither would LED i think