Here is another hundreds chart that I created in PowerPoint. This is the Light Switch Hundreds Chart. Can you explain why it arrives at the final set of numbers? Try to think outside of the “box.” You’ll understand what I mean in just a moment…

**Update: This challenge has been solved one time now. Congratulations to Rik Rowe’s High School Math Class in Massachusetts who have been the first to solve. Thanks @whsrowe for challenging your class and for sending me the answer. I am very impressed. The challenge remains extended to all others. Can you explain why this is true? **

If you would like to download your own copy of an interactive hundreds chart, click here.

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