There are three switches outside of a dark room. Each corresponds to one of the three light bulbs in the dark room. You can turn the switches on and off and leave them in any position. How would you identify which switch corresponds to which light bulb, if you are only allowed one trip in the room?
Answers are due by 2/23/15 at 12:00 AM. Email your answers to escholium2015@gmail.com with the subject “2/16/15 Puzzle”. The first correct submission will win a $10 Chipotle gift card.
This puzzle was selected by Abhay Malik.