Solving Problems in Project Euler
Project Euler is a fantastic website for honing your problem-solving and mathematical skills. This page will approach a few of these problems in Attache. I cannot encourage you enough to try these problems on your own before reading the rest of this page. You will spoil these problems for yourself if you haven't already done them. I will be showing programs and answers, so there will be spoilers.
Sorry, did you say you haven't heard of Project Euler? Stop everything you are doing and do some problems! The site can be found here: projecteuler.net.
Enough of that, let's get started!