im not sure if they exist. If u have a problem with a question, u can post it on the forums.
Or alternatively, u can buy the phoenix books for maths and maths ext 1. These have exam-style questions sorted by topic (they have questions for every topic in the 2-3 unit prelim and HSC course, so if u are struggling with a topic, u can do Q's from these books). And the best thing is they have good worked solutions to all the problems.
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