Welcome to our Pascal's triangle calculator, where you'll find out how to use Pascal's triangle, also as to why you ought to use it in the first place. Don’t be concerned, this idea doesn't require any area formulas or unit calculations like you'd expect for a traditional triangle. What’s Pascal's triangle Calculator then? Well, it is neat thanks to calculating the number of combinations, and visualizes binomial expansion. But, before we start describing Pascal's triangle patterns.