On January 21th at 14:15 UTC , progression through exercises will be unavailable for 10 minutes due to a planned maintenance break.
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1. Introduction


Welcome! First, congratulations on reaching this part of the course, you've come a long way. We won't introduce any new concepts today. This part of the course will focus on preparing you for the final quiz. To do so, we'll present lots of practice exercises, because, as we're sure you know, practice really does make perfect. Don't worry if you get stuck with some of the exercises - there are always hints to help you.

Ready? Set? Go!


Press Next exercise to continue.