Nerisrath Grand Central US - 102
The rules were stated
1) there are 3 switches
2) you can manipulate the switches however you want
3) you know the light is in an off state currently
4) cannot change switches once the door is opened
Riddle Answer : Turn on switch 1, wait a few minutes, turn off switch one, and turn on switch 2. Open Door. If light is on It is controlled by switch 2. If light is off, feel the light. If it is warm, it is controlled by switch 1. If it is cold, it is controlled by switch 3.
Catch 22: This is an old riddle. IF it s a Modern LED you are screwed LOL.
Realistic Answer: You need to use the Jon and don't care which switch it is, so you turn on all 3 and do your business...