0Puzzle : You have a set of 3 light switches outside a closed door. One of them controls the light inside the room. With the door closed from outside the room, you can turn the light switches on or off as many times as you would like.
You can go into the room – one time only – to see the light. You cannot see the whether the light is on or off from outside the room, nor can you change the light switches while inside the room. The room has no window. Based on the information above, how would you determine which of the three light switches controls the light inside the room?
Solution:
Step 1: Turn on the first one for like two minutes then turn it off.
Step 2: Then turn on the middle one run inside
Step 3: If the light is on it is the middle one, if it is off feel bulb for warmth. If the bulb is warm then the first one turns on the light, if not then the last one does
