Riddles

[pinhodecarlos]

No PIR on the room with the light bulb?

[henryzz]

Originally Posted by petrw1

1. Turn on light switch 1 and wait for 3 minutes (or so)
2. Turn it off and turn on light switch 2 and immediately enter the room.
3. If the light is off it is switch 3.
4. If it is on:
- and the bulb is cool it is switch 2.
- and the bulb is warm it was switch 1.

This solution assumes you can get close enough to the bulb to touch it.

That was my solution.

[Dr Sardonicus]

Originally Posted by henryzz

A riddle came up at lunch.

There are two rooms. One has a light bulb and the other has three light switches in it.

You start in the room with the switches and can only go through the door once. How can you work out which switch turns the light bulb on?

Nothing can be dismantled and you can't see though the door.

Answer 1: None of them do. Switches don't work themselves, you see...
Answer 2: None of them do. The bulb isn't in a fixture.
Answer 3: None of them do. The bulb doesn't work anyway.
Answer 4: The cat is dead.