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    Highly experienced(10+years) maths tutor | 3u 99, 4u 97 | B Sci(Adv Maths) USYD

    Bump - accepting new students as a few of my students are finishing the HSC Please feel free to have a chat about any enquiries. Thanks
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    Perms and combs

    Alternatively think about how many arrangements without any restriction and then out of all what proportion has PRESS exactly in this order: 10!/(2!*2!) * 2!/5!
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    how to do this???

    There may be a better way than this but I think you could use graph to see it: (1) x + y ≥ a (2) x − y ≤ −1 Hence we have y ≥ a - x And y ≥ x + 1 Hence y would be in the region about either line (above a-x to the left of intersection and above x+1 to the right) a) When a<0, there is no...
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    How do I even?

    You can check past HSC or trial papers for similar examples and the techniques should be somewhat similar/standard. For example in past HSC extension 1 paper there is : 2010 7b and 7c 2018 14b 2015 14c etc...
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    Is Maths ext2 manageable without an external tutoring service?

    I personally didn't go tutoring for maths for my HSC and I think I did okay for it. Hypothetically speaking if I could chose again I would have gone tutoring and could have benefited with better guidance (not necessarily just for higher marks but more so for being challenged and motivated in a...
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    Is an actuary degree worth it????

    Depends on what you plan to do afterwards. If you are looking at pricing/actuarial roles at insurance companies then yes I would be say in terms of the effort spent(especially if you continue to do FIAA) and the rewards it may be a bit overrated. If you check the job openings at insurance...
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    Does school performance affect your ATAR/raw mark?

    Oh also some of the catch(or 'disadvantage' in a way) of higher ranked school is that they may limit the number of people who are able to choose certain 'harder'(often better scaling) preliminary and HSC subjects to begin with. But those are purely based on their yr 10 performance and in some...
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    Does school performance affect your ATAR/raw mark?

    Practically you don't have to know all of those just bear in mind if your school's cohort is small and unstable you should try and maintain a high (ideally 1st) ranking to avoid negative impacts of moderation. Also from ATAR maximisation perspective you want to improve your ranking of your...
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    Does school performance affect your ATAR/raw mark?

    Okay as mentioned I think you are getting mixed up between the terminology and hence the confusion. School performance (in terms of the total and distribution of HSC marks for each subject) does affect the "moderated assessment mark" but NOT the exam mark. In terms of what matters to you ...
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    How does standard math scale down ?

    Your document is the HSC mark against ATAR contribution not against scaled mark. Noting that precaution the document looks reasonable. The ATAR contribution is assuming if all other units are of the same scaled mark what's the ATAR equivalent. E.g. If I get 97 for maths standard that is about...
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    UNSW Actuary vs Commerce Co-op?

    With actuarial co-op do you actually want to stay in the traditional insurance pricing area and get qualified as FIAA? Or is consulting or IB more preferred? If that is the case I don't think you necessarily have to take an actuarial degree.
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    How to get rank 1 in maths?

    don't set your goal as 'ranked 1st' which is quite high level and vague but rather instead focus on the actual problems at hand e.g. if you think it's silly errors - what are the different types of that and how to practice and avoid that? time management - which type of questions are you...
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    Standard or advanced maths?

    Some schools offer revision / catch up lessons for situation like this. Or at least make sure that you can catch up on the topics you missed.
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