I have decided to start posting a new logic puzzle every Friday. I will post the answer the next Friday when I post a new puzzle. So here is the first one. Leave me a comment to let me know if you think you know the answer. And I will let you know who gets it right.
Bulbs
This is one of my favorite free printable logic puzzles with a real life solution.
Imagine you are in a room with 3 switches. In an adjacent room there are 3 bulbs (let's say in lamps which are on a regular table), each switch belongs to one bulb. All are off at the moment. It is impossible to see from one room to another. No help from anybody else is allowed.
How can you find out which switch belongs to which bulb, if you may enter the room with the bulbs only once?