Do tutoring centres give you questions that are harder than the ones in the actual HSC? For example, I saw some maths questions from Dr Du from a friend who goes and some of them really require thinking outside the box. Is it necessary to go to tutoring to familiarise yourself with these hard questions for more practice? Or is continuously doing questions in past papers sufficient for practice? And if not, where can I find such hard questions in high quantities without paying for tutoring? I'm worried that without tutoring, I might not be sufficiently prepared for externals, since they are probably harder than my school's internals. My subjects are Ex2 maths, Ex1 maths, english adv, physics, chemistry and economics if that helps. Any suggestions for resources to practice exam style questions for my subjects would be greatly appreciated.