Western's rugby team scored 27 points in their last game. All their points came from these three ways of scoring: A try is worth 5 points.
After scoring a try, a team can attempt a conversion, worth 2 points.
A drop goal is worth 3 points.

Question:
List all the ways they could have scored their 27 points.

Part 2: Explain your strategy for making sure you haven't missed any possibilities.