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1-\binom{20}{2}0.8^{2}0.2^{18}+\binom{20}{1}0.8^{1}0.2^{19}+\binom{20}{0}0.2^{20}

hey, is the answer to i) 0.86 ? this is how i got it, lol - i think i done something wrong :S, part ii) is the 'nested' probablilty question..

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iced coffee for me.. :rofl:

I Never do hw on fridays, i always start doing it Saturday evening, which is a pretty bad habit, cause i'm in year 12- oh well thought, you need a social life as well right? :rofl:

Yep, i got 5488kg/m^2 aswell..

School Certificate has nothing to do with the HSC and what your going to achieve, even year 11 doesn't count, just remember the basics, and you'll probably be on your way to a 80+ UAI, try a bit harder and you might get 85+.

your ranks pretty gud, however what rank is your school?, and how is your school going compared to last year? - this is a major factor in determining if you havea chance of getting an E4, in short if you ace the remaining 45%, then there nothing stopping you getting an E4, if someone in your...

I agree, it gives a good life lesson... :)

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Sorri guys, i wont be there this afternoon, i have stacks of hw from school.:spzz:, probably be there next week.. after you finish tonites session post up how it was and stuff ye? helpful or not.. etc

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ye thats me.. lol - where you the won i sat next to in the library? or the one walking around with nitin?

alrite.. who do we send our emails to? op.?, i think msn would be the best place.. convenient

i'll join.. how about msn??

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I don't use the sidebar altogether, i feel it reduces the side of my screen, and i really dont use anything else rather then the clock.:rofl:

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