You Are In A Room That Has Three Switches

A windowless room contains three identical light fixtures each containing an identical light bulb or light globe.

You are in a room that has three switches.

You are outside the room and the door is closed. Tame the tentacles and provide the power that will allow each fixture to be operated by a dedicated switch. How to wire three switches in a gang box seems a bit daunting just looking at it. The room is completely sealed off from the outside.

Each light is connected to one of three switches outside of the room. On the outside of the room there are three light switches that control each of the respective light bulbs on the other side of the door. All lights are initially off and you can t see into one room from the other. Interview question for candidates day interviews for multiple areas x div back office in new york ny you are in a room with 3 switches which correspond to 3 bulbs in another room and you don t know which switch corresponds to which bulb.

You are standing outside a closed door. Your task is to determine which switch controls which bulb. Outside the room there are three switches connected to the bulbs. Let the bulbs be x y and z.

You may manipulate the switches as you wish but once you open the door you can t change them. You are allowed one and only one trip to the other room at which time you have to determine which switch controls which bulb. You can not use any external equipment power supplies resistors etc. You may inspect the room only once.

Punishment for failure to solve this is having to listen to obama speak for an hour. First switch on the first switch keep it on for say 2 3 minutes. You have only one power supply wire and three different fixtures to be wired to that power supply. This is a simple problem.

You can only enter the room with the bulbs once. We have to go to that room only once. Once you open the door you may never touch the switches again. You are in a room that has 3 switches and a closed door the switches control 3 light bulbs on the other side of the door once you open the door you may never touch the switches again.

You are in a room that has 3 switches and a closed door. There is a room with a door closed and three light bulbs. As soon as u on the second switch go to the room. Identify each switch with its bulb.

The switches control 3 light bulbs on the other side of the door. The three switches control three light bulbs in another room. Turn on switch x for 5 to 10 minutes. If you found that the bulb is glowing that means the second switch corresponds to the room.

How can you tell which switch is connected to each of the light bulbs. Each bulb is switched off at present. Then switch of first switch and on the second switch.