Hands-on drills for Lesson 1 — The submission. All three run on the real numbers of Alpina MTPL XL — the same submission nodes you opened in the product — plus one comparison placement from the course universe. The calculation workbenches ship red; your job is to make them green.
- 🟢 Easy · Read the tower — derive each 2027 layer's premium at 100% and the blended rate on line. The check battery knows the answers; your
Premium100stub does not, yet. - 🟡 Medium · The rate change — diff the 2026 and 2027 vintages per layer. One naïve blend hides what the per-layer diff shows.
- 🔴 Hard · Spot the gap — a submission arrives from Léman Assurances SA without a stated loss ratio. Derive everything that can be derived, and keep the combined ratio honestly
null— the battery fails you for inventing a zero.
Your editable copies are installed with the course — open a drill from Your exercises on the lesson page and work directly in your own space.