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http://en.wikipedia.org/wiki/Cytotoxic_T_cell "A cytotoxic T cell... belongs to a sub-group of T lymphocytes (a type of white blood cell) that are capable of inducing the death of infected somatic or tumor cells; they kill cells that are infected with viruses (or other pathogens), or are...

11) is A I believe, because water pressure is part of the source to sink theory.

I think it was a good paper. MC was tricky though. Hoping for 85-90/100

You will get the mark. Being a 1 mark question, I would expect that 1 mark be given for the correct answer, which was as you said, 2/pi.

Hope not, I wrote 1/8 x ln9 as well :S

Yes you could just assume it

It would be counted as a carry on error, so I think you would probably get the mark.

Naa the question said "Use the reflection property" so you assume it.

I've counted 29 marks that I will probably lose (I might get marks for working lol), so hopefully at least 91/120

It was this: The two angles in red are equal

I'm not too sure.. They both said it was pretty hard, but pretty hard for them is like 110/120 =_=

I thought the exam was pretty difficult, hopefully I get 90-100/120

Yes you can.

No lol

If the marker cant follow your working out in logical steps, they will take marks off you.

That's why he said that "Last year around 78 for 3u"...

I've been averaging at around 100/120

I need the full 3 hours for a 4U math paper.

You won't be penalised. However, since you wrote about 2 related texts instead of 1, by ignoring one of your related texts, you most probably will not have enough content to make your argument strong enough. So you will probably still lose a few marks because of this :\

YAY!!!!!! Finally!!!!!!!!!!! Now we can all study for real subjects :P