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How did you get that?

With 16 I have no fucking idea why I put D. Can you explain 13 in a bit more depth?

Fair enough. What did you get for 26 a) ii)?

Yeah ok. Although now I know I've stuffed up at least 4 marks in section II. 1.C 2.C 3.C 4.A 5.D 6. (I think I put A) 7. A 8.D 9.C 10. B 11. B 12. C 13. B 14. D 15. D 16. D 17. C 18. B 19. B 20. B 21. D 22. A

Yep 1/2000

You edited that in after and it's not 1/5. It's 1/2000 like mystiques said.

AH SHIT i just realised what you meant in the first one, my bad.

No it asked for the probability, not the total amount of possibilities.

I'm pretty sure you're right with 12 :)

What does that matter, it asked to find the equation?

Yeah I actually agree. MC was good. But the section II was harder. I didn't get that. What about the interest? I seemed to get iii) though, cheers :)

Yeah I got that just then. But i said equal in the test. FML!!!!!! In the test i thought i might be wrong seeing how it was worth 4 marks but I didn't have enough time to come back to it. I'll probably only get 2/4 max. FML!

There was a 6/36 chance of getting a difference of 0, 10/36 for 1, 8/36 for 2, 6/36 for 3, 4/36 for 4, 2/36 for 5. You just multiply these chances with 18 to get the difference they should theoretically show. So experiment two was more correct..

26c i) and iii) annoyed me. Can you tell me what you got (roughly) And now I think I did 27c wrong. But besides those it was a decent exam, just harder than previous years.

I've done 2008-2001 HSC past papers and I think this years is the hardest. Anyone agree?

You mean 1.6/4.5^2

Well if I've shown all the working out to the answer (which I did) they are looking for I'll get the marks.

It was 50mg and it asked to answer in grams so if you left it as 2x10^-5 you'll be wrong.

Hmm maybe. Then perhaps both would be right...?

It's adding 2 to x. Not 2 to 6x.