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Hey all, Was just wondering after trials if going to school is still compulsory (taking into consideration you've finished your course). Like will it add to your usual school attendance, and if it drops below a certain amount of days absent, you don't get your HSC? I heard that you must attend...

The only reason it's called trials is to imitate the real HSC, and i'm pretty sure the half yearlies was the same exam length time as well. It may very between schools. No need to have a fit..please~

Been in the HSC game for almost a year and doesn't even know how long a English Paper goes for. Can't blame the school for your own forgetfulness tbh

Yeah i knew it! thanks for the clarification

Hey guys, For the success one book (i got the 08 version), question 23 in the 2007 paper, is it me or is the answers wrong for it. It asks to draw/write the structural formula for ethyl hexanoate. I looked at the answers given in the back and i think they accidently added an extra carbon in...

YES! Of course. Here's an example: nCk = nC(n-k) Let k = 2 and n = 12 12C2 = 12C(12-2) 12C2 = 12C10 which is true by calculator. The way this theorem works is because in an expansion, the coefficients are mirrored both ways from the centre of the expansion.. you'll see in the pascal triangle...

Oops, i added x^0 and x^-0 coefficients, forgot to times em lol Cheers man

Why did u n-k both sides? you only do it to one side... expressed in the law itself. Follow my steps written before, its clear. Also, these two lines you wrote don't make sense. You must of typo'd 12C(12-3r) = 12C(12-2+r) 12-3r = 2+r

I did what you did and still couldn't get it.. the eff.. could u show the workin or something please

LOL you stole my idea! =p

I don't know if this is right. But i solved it using this method. Using the law: nCk = nC(n-k) Taking into consideration only the k bit, I went: 3r = 12 - (10 - r) which is k = n-k 3r = 2 + r 2r = 2 r = 1 Also works if you go: 12 - 3r = 10 - r Hope you understand.

150 or greater. I feel disadvantaged.. so far i'm the only one in this thread with the LOWEST STAT overall.. far out :burn:

lol i suck so bad at verbal too :( Verbal: 149 Quantitative: 161 Overal: 155 I hope the cutoff mark for Pharmacy is still 150 *crosses fingers*. It says it might be different for 2010 entry coz 150 is based on this years.

I got mine 20mins ago... quite disappointed and surprised at the same. Does anybody know if just >150 STAT score guarantee's an entry with the required UAI. Or do you have to get a REALLY good STAT score?

If you can flip it over, then wouldn't circles be 11!/2 as well? This bracelet/necklace concept is ghai

Twelve differently coloured beads are arranged around a necklace. How many different arrangements are possible? Is the working out: 11! / 2! If it is why? thanks

sweet got it thanks

Can someone please show me how to integrate: e^sqrt(x) using the substitution u = sqrt(x) Thanks

Alright. Thanks man

Is my solution correct? Given P(x) = 4x^3 - 27x + k has a double root. Find possible values for k. P'(x) = 12x^2 - 27 P'(x) = 0 x^2 = 27/12 x= +/- 3/2 P(3/2) = 27/2 - 81/2 + k = 0 P(-3/2) = -27/2 + 81/2 + k = 0 k = 54/2 = 27 k = -54/2 = -27 Help is appreciated.