@Octavius old syllabus had lots of 'proof topic' questions (despite the proof topic not existing at the time) that are basically the same for practice.
For example, the 2019 4u hsc has induction for question 14c, and an integration logic question for 15a) part i. The 2018 hsc had inequalities for q9 and 15c, and induction for 16a.