This video explores one of Leonhard Euler’s most elegant ideas, showing how factorials can be used to connect π, square roots, and one-half in a surprising and beautiful way. Through clear ...

Following my previous “Brain Boggler” article (the “Black Box” that inverted three signals using only two NOT gates along with as many AND and OR gates as you cared to use), I was quickly buried under ...

The equation n! = 6! × 7! relates three factorials. How large is n?

Learn how to use a host of Linux commands in these 2-minute video tutorials from Sandra Henry-Stocker, author of the Unix as a Second Language blog.