A nice easy puzzle this week that has been around for a while. Well at least as long as electric lights!
There are three light bulbs in the attic and three light switches downstairs, out of sight of the attic. Each light switch operates one, and only one, light bulb. And all the light bulbs are currently switched off.
The problem is to identify which light switch is connected to which light bulb.
You can switch the light switches on and off as many times as you want, but you can make only one trip to the attic.
Answer at 9.00 on Monday