Ask (and then answer!) three questions that can be answered with the course material covered so far. Then pose a fourth question that cannot be answered with the course material

so far. Bonus point for creative or interesting questions. Questions shouldn't involve complex calculations.[Example of answerable question: We have a 180 acre campus. What is that area is square meters?Example of unanswerable (from course material): Who came up with the unit of acres and why?]