Brain teaser

1. 2021-03-08 at 1:19 AM UTC

   #1
   

   Donald Trump Black Hole
   You are in a room with three light switches on the wall; each switch is connected to one light bulb in the adjacent room, separated by a door so you can’t see the bulbs. You can position the light switches in any way you want, then you must enter the room only once and ascertain which switch is connected to which bulb. How do you do it?
   
   BTW there is a solution, and you don't need to cheat.
2. 2021-03-08 at 1:21 AM UTC

   #2
   WellHung Black Hole
   nigger.
3. 2021-03-08 at 2:22 AM UTC

   #3
   

   POLECAT POLECAT is a motherfucking ferret [my presentably immunised ammonification]
   look through the window
4. 2021-03-08 at 2:43 AM UTC

   #4
   

   Donald Trump Black Hole

   Originally posted by POLECAT look through the window

   
   There is no window and you can't see through the door, under the door, etc.
5. 2021-03-08 at 3:18 AM UTC

   #5
   

   POLECAT POLECAT is a motherfucking ferret [my presentably immunised ammonification]
   xray glasses?
6. 2021-03-08 at 3:19 AM UTC

   #6
   

   Donald Trump Black Hole

   Originally posted by POLECAT xray glasses?

   
   No, there is no trickery. You don't need to pop holes in the walls or do any rewiring of the switches. There is nothing sneaky needed, just some intelligence.
7. 2021-03-08 at 4:26 AM UTC

   #7
   

   Solstice Naturally Camouflaged
   Turn two of them on then shut one off after a minute and go see which unlit bulb feels hot
   The following users say it would be alright if the author of this post didn't die in a fire!

   • mmQ
8. 2021-03-08 at 2:33 PM UTC

   #8
   

   vindicktive vinny Black Hole

   Originally posted by Solstice Turn two of them on then shut one off after a minute and go see which unlit bulb feels hot

   
   they're high in the ceiling.
9. 2021-03-08 at 2:34 PM UTC

   #9
   

   vindicktive vinny Black Hole
   also i can tell you why the solution wont work.
10. 2021-03-08 at 2:41 PM UTC

    #10
    

    Solstice Naturally Camouflaged
    Well that's the solution, I've heard this one before
11. 2021-03-08 at 2:46 PM UTC

    #11
    

    mmQ Lisa Turtle

    Originally posted by Solstice Turn two of them on then shut one off after a minute and go see which unlit bulb feels hot

    
    This seems like the only way to do it.
12. 2021-03-08 at 2:53 PM UTC

    #12
    

    Ghost Black Hole
    I would just guess at random because you have pretty high odds of getting it right
    
    There are only so many combinations of 3 you can make 123 213 231 132 312 321 etc