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for b), could you confirm answer is 0.68256. answers say 0.7102 wow Cambridge is rarely wrong...

soz that was a typo. and yes I got the same, but Cambridge says 0.0124. this is from 10J, year 12 3u Cambridge.....

lol Carret?

first of all, not getting the provided answer. anyway, here's my working: probability = (12/30)^2 x (18/30)^3 isn't it that simple, because order is given/set. - i.e. first two days are clear, last 3 wet... lol mindblanking...

usually a topic I'm fine with. but struggling with this q and getting the desired answer of 0.0124 for question a) here it is:

did it today for practice. was a straightforward exam, but the math induction q was retarted. not a good question.

more opinions please! :D

Re: Official 2014 Internal Ranks Thread bumpity bump post your internal ranks here :D

I would say around 97....

defs around 92 - 94.

around 92...

around 82.......

i would say 95...

I would say 96.

haha more seriously, its good that you've thought a lot about it.

this will be one of the texts in section 1 (short answer) for aos:discovery 2015 hsc paper.

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around 96

I would say a bit lower. high 70s..

around 70 imo...