Lightbulb In The Attic Question

You can play with the switches as much as you want and after that you can visit the attic above just once.

Lightbulb in the attic question.

There is a lightbulb inside a closet. The door is closed and you cannot see if the light is on or off through the door. This is one of my favorite logic puzzles with a real life solution. The hazard of a keyless in an attic if one exists is the physical placement of the fixture and requisite lamp.

You must determine which needs saving and remove the other two. Now a week later i noticed condensation on one side of the light fixture again but. You can turn the switches on and off and leave them in any position. If it s right above a scuttle hole such as you would bump it when you boost yourself up and in then it s in a bad spot.

This will tell us that the switch which is in an off position corresponds to the light bulb that s off in the attic. There are three switches in the basement two of which are useless one is connected to a lightbulb in the attic. That is switch on 1 2 wait a minute switch off two and go to the attic and check if the bulb is on hot or cold. It s basically the same solution as our first idea.

If we have 2 of the switches on then when we go into the attic 2 of the light bulbs will be on. And if we have 1 switch on and the other 2 off then we know which switch corresponds to the light bulb that s on. Outside of the closet there. However you know the light is off to start.

There are three light bulbs in your attic. Each corresponds to one of the three light bulbs in the attic. Question for you guys. There are three switches downstairs.