Probability Questions (1 Viewer)

[l-mercedes-l]

Hey guys;

I was just wondering if anyone had any thouhgts on or examples of the hardest possible probability questions we can be asked in 2u. My 3rd assessment is entirely on probability [i no... go figure] and im worred that they might throw in a few really hard questions but i cant seem to find anything ridiculouslyhard...

The only thing i can think of are the ones which take a log function to solve, like find how many games [etc] would need to occur for there to be a 90% chance of winning etc...

Id love to hear from anyone who has any idea of how difficult these questions can possibly get with/without an example...

Thankyou for taking the time to read this... GOODLUCK EVERYONE

luv Saedie

 

[Jago]

check previous 2u papers. they shouldn't get too hard.

 

[rama_v]

Sometimes you may get a question which requires the formula for the limiting sum of a GP, so these are ones to watch out for. An example is Q10(a) in the 1994 HSC 2 unit paper where you use the fomrula to calculate the P(win)=a/(1-r) ...

 

[azza_3761]

Isn't that more for series and sequences rather than probability?

 

[rama_v]

Isn't that more for series and sequences rather than probability?

It sometimes appears in probability questions. Usually the first few parts are ordinary ones and then the last part requires this formula.

 

[l-mercedes-l]

thanks

is the limiting sum the same one as in series?

i dont really understand the application but i dont want to waste your time so ill try those questions first tommorow...

thanks for your help

 

[FinalFantasy]

Hey guys;

I was just wondering if anyone had any thouhgts on or examples of the hardest possible probability questions we can be asked in 2u. My 3rd assessment is entirely on probability [i no... go figure] and im worred that they might throw in a few really hard questions but i cant seem to find anything ridiculouslyhard...

The only thing i can think of are the ones which take a log function to solve, like find how many games [etc] would need to occur for there to be a 90% chance of winning etc...

Id love to hear from anyone who has any idea of how difficult these questions can possibly get with/without an example...

Thankyou for taking the time to read this... GOODLUCK EVERYONE

luv Saedie

here i juz found a random one...
i)Find the probability that 6 throws of a fair die result in exactly 3 even scores, all of which are different.
ii)Find the probability that exactly 6 throws of a fair die are needed in order to obtain 3 even scores.
iii)Find the probability that at least 6 throws of a fair die are needed in order to obtain 3 even scores.

have fun! i hate probability