>In one room, there are three switches. They control three lightbulbs in an adjoining room, but you don't know which switch controls which lightbulb. All switches are initially in the "off" position. You can't see the other room from where the switches are.
>
>Your task is to find out which switch controls which lightbulb. You can manipulate the switches all you want, and then go ONCE into the adjoining room to inspect the lightbulbs.


I ran this one by my daughter yesterday, the one who likes puzzles, and she just about got it. Her solution was the same except she said hold your hair next to the two unlit bulbs (instead of putting your hand on them).

This was during the lunch break at a volleyball tournament and somehow the discussion went on to a new TV show called "Are You Smarter Than a Fifth Grader?" I haven't seen the show but what a hilarious concept. According to those around the table who have seen it, we adults should have reason for concern (LOL).