# Category Archives: Math

## Counting Backwards in Steps of 6, 7, & 8

Everyone knows that it is not difficult to count forwards from 1 to any desired point. It is not difficult to do the same thing in steps of 2, 5, and 10. Counting forwards in steps other than these is … Continue reading

## Interest in Numbers

I’ve been interested in math all my life but I’m not what is commonly understood as being a mathematician. I like numbers but mainly for their entertainment and useful benefits. As a child, I once computed all possible fractional values … Continue reading

## Betting on the Numbers

In 1941, when I started my first job at The American Locomotive Company in Schenectady, I met a numbers runner for the first time. An individual would come to the area where I work and take bets from workers. There … Continue reading

## The Rule of 72

If you ask an old-time banker how long it will take to double an investment at a given compound rate, that person will be able to give you an approximate answer within seconds. The person uses the Rule of 72. … Continue reading