Thanks :) I know these are the small-fry problems but it'd bug me if I didn't do them in order. I'm being worked to the bone at an internship right now, but that ends tomorrow and then I shall be posting a problem daily. I completed about 200 of them a year or so ago but I'm a bit rusty on the good ol' mathematics so I'm going through 'em again aha. Thanks for your comment though!