Math

A Prime Mistake

To be sure, nine, along with three and seven, are great favorites of European folklore. No one knows for sure why just those numerals achieved such prominence. The reference to the fact that all of them are primes does not go far.  So says… Read More ›

Goat problems!

No, no, we’re not talking about your pet goat’s behavioral problems. We’re talking about a certain type of math problem—a type of problem to which I used to devote a couple of classes per year when I was teaching Honors… Read More ›