There are three switches downstairs. Each corresponds to one of the three light bulbs in the attic. 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 upstairs?
The correct answer to the March Challenge was “German”.
Only Heidi E. Lemieux, with SANBORN, HEAD & ASSOCIATES, Inc. got it correct.
Please send you answers to
Thomas Selling via e-mail: [email protected]
Correct responses will be recognized in the future issues of the New Hampshire Civil Engineer.