Self-testing quiz on lecture 5

Based on your feedback, we have redesigned theses quizzes a bit.

Starting from lecture 5, the plain quizzes are all multiple-choice answers, i.e. only a single answer is correct - but we will try to add a separate quiz with more complex questions.

If you are uncertain about the answers, go back and rewatch parts of, or the entire, lecture 5. Our reason for not showing correct/incorrect answers here is that this is your self-testing, not a place where you learn the answers - the goal is that you should be confident your answers are right, and go back and review material for questions where that is not the case!