One million seconds is about 11.5 days. One billion seconds is about 31 years and 8 months.

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Unusual Counting Systems

In our everyday lives, we use a counting system in which we count from 1 to 10. That seems only logical because our hands are already in what is called base 10, which means the number 10 serves as the base of our number system. Each place in a number corresponds to a different power of 10. For