Tag Archives: infinite geometric series

Geometric Series to the Rescue!

On a recent road trip, the driver asked me to compute the car’s mileage per gallon. She handed me a little notebook with odometer readings and gasoline gallons at each filler-up. I guess when you run a math club for … Continue reading

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Does 0.999… Really Equal 1?

One of the most oft-asked questions in K-12 math is: Does zero point nine repeating really equal one? Here’s the short answer: Yes! And here’s a longer answer,

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