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How many past papers for different subjects have people done? I know personally I have just being doing a ton of maths papers because I find they are the only useful ones.

Could I get some help with part i and ii please. Thanks http://prntscr.com/kz7x4d

For these questions just logically think about which terms in the expansion would multiply together to give a term in x^0 i.e. a constant term then add them together. In this case since the powers aren't that large write out the expansion of each and then do it that way. If they were bigger it...

Is it ever acceptable to use guess and check? Say for a problem like c iii from the 2004 HSC: http://prntscr.com/kx0cli Rather than using the definition of nCr can we just set up the inequality and substitute values in?

How you have done it is just fine- just post any questions and in time I'm sure they will be answered. For this particular problem: Derive equations for the sum, sum for two at a time, and product of roots. [I will use a, B and aB as the roots] These will give you: 1. (aB)^2=d 2. a+B+aB= b 3...

http://prntscr.com/kw5d3q Part iii. Thanks

Ok thanks I'll try that. Just out of curiosity is there anything you look for when approaching these more left-field binomials, or just intuition?

http://prntscr.com/kvbms7 Thanks

Applying for Sydney Scholars but hoping that I get 99.9 so automatically get a 10k one per year

I wouldn’t be doing any study if I were you. This time next year you will still be studying and have your HSC exams still in front of you. It’s just not feasible.

Could someone try part iii as well

Just solve normally for constant term (when the two terms in the general term of the expansion will multiply to give you 0). The lower limit of nCr will be in terms of n rather than an integer value. So we don't find the constant term just an simplified expression for it.

I thought it would be nice to have a thread for answering past HSC questions and any other for that matter, in the lead up to the exam in a few weeks. So here it is. I'll start off with one from the 2001 HSC which I have been struggling with. Any help would be appreciated...

My goal was 99.9 at the start of year 12 but now it has changed to >99.5

Yeah some of the questions are really vague and use different terminology

Does anyone know anything about the difficulty of NEAP maths trials? Or just NEAP in general. Just managed to get my hands on a couple and there are definitely some weird questions.

Do some maths!

Depends what subject. For 3U aiming for around 25, for 2U just 10 will be sufficient. Other subjects like English I will do none.

http://prntscr.com/ktf346 Could I get some help with part b please. The answer I got for a was 288.

They were written in April. Exactly when the saga started.... And the questions will come from somewhere in the syllabus so they aren't unpredictable.