Here, I will occasionally post challenge questions for the daring 3U/4U student to attempt.
Questions are not intended to reflect the scope of the difficulty in actual HSC questions, however may be completed using only knowledge taught in the course. Spoilers are intended to reveal what topics to draw knowledge from when a genuine, unaided attempt has been unsuccessful.
I invite everyone to also post their own questions at their own discretion, and for anyone who has completed 3U maths or equivalent to also answer.
Spoiler
Required knowledge: 2U Preliminary Basic Arithmetic and Algebra, 3U HSC Induction
Aside: An Extension 2 marathon will come in time after more topics have been taught.