Part (b). So, this is from the introduction of a discreet math book, How to Prove it, idk where to even start with this, and figure that since it's part of the 1st question in the intro that I should know how to do it. But, alas.
Thanks so much! I will probably post more problems. I went back to school a few years ago and this was my next math class so I wanna work through it and think about maybe finishing my math BA, but also might just keep doing math for fun. 🤷♀️