You Are In A Room With Three Light Switches

You are standing outside a room next to three switches all of which are off.

You are in a room with three light switches.

With the door closed from outside the room you can turn the light switches on or off as many times as you would like. Outside the room there are three switches connected to the bulbs. Turn switch 2 on for five minutes and then turn it off. You can go into the room one time only to see the light.

The bulb that is off and cold is controlled by switch 1. Identify each switch with its bulb. It s really a stupid question though that says nothing. There is a room with a door closed and three light bulbs.

Each switch operates a different light bulb in the room. Punishment for failure to solve this is having to listen to obama speak for an hour. You are allowed one and only one trip to the other room at which time you have to determine which switch controls which bulb. However you know the light is off to start.

You re in a room with three light switches each of which controls one of three light bulbs in the next room. In front of you are three light switches. You cannot see the whether the light is on or off from. You can inspect the other room only once.

Call the switches 1 2 and 3. Turn on switch x for 5 to 10 minutes. Determine which switch operates which bulb. The door to the room is closed and you cannot see the light bulbs from the hallway.

You need to determine which switch controls which bulb. The warm bulb is controlled by switch 2. Outside of the closet there are three light switches. Each light is connected to one of three switches outside of the room.

Only one does anything and it turns on the light downstairs. Let the bulbs be x y and z. Before opening the door you may play around with the light switches as many times as you like. You have a set of 3 light switches outside a closed door.

You are only allowed to go into the room once. You may manipulate the switches as you wish but once you open the door you can t change them. The door is closed and you cannot see if the light is on or off through the door. Do it the electrical engineering way and put a video camera in the room and wait 15 minutes before flipping each switch.

From here you can t see the light and it makes no sound. Leave switch 1 off. If a bulb is on it s controlled by switch 3. The three switches control three light bulbs in another room.

This is a simple problem. But once you ve opened the door you may no longer touch a switch. Each bulb is switched off at present. The room door is closed so you cannot see which switch operates which bulb.

One of them controls the light inside the room. All lights are off to begin and you can t see into one room from the other. You are outside the room and the door is closed. How can you find out which switches are connected to which.

Turn switch 3 on.