The crisp new dollar bill that I have just taken from my wallet bears the serial number 24598176. It’s easy to tell that the number is exactly divisible by 2 but not by 5. Is it divisible by 3? by 4?

This is a preview. Log in through your library . Journal Information The Mathematics Teacher (MT), an official journal of the National Council of Teachers of Mathematics, is devoted to improving ...

It’s easy to tell if a given whole number is divisible by 2. Just check whether the last digit is even. There are also simple rules to determine whether a number is ...

This is a preview. Log in through your library . Journal Information One of the ways that Pi Mu Epsilon promotes scholarship in mathematics is through the publishing of the Pi Mu Epsilon Journal. The ...