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  1. hermine

    1993 HSC harder probability question

    I dont understand how you got the probs of the cases
  2. hermine

    1993 HSC harder probability question

    el annoyance that it probably is an easy question, thanks in advance In the next 7 days, called day 1, day 2, ... , day 7, Esther and George must each take 3 days in a row off work. They choose their consecutive 3 days randomly and independently of each other. i. Show that the probability that...
  3. hermine

    Integration

    another way of doing that just by substitution where u=e^x, du=e^x dx sub that in and you get S dx/(1+u^2) which is the tan^-1 standard integral
  4. hermine

    Some Permutations Qs Cambridge

    ah alright, thanks for that. such simple questions and I still didnt get it lol, you've saved my sanity for tonight
  5. hermine

    Some Permutations Qs Cambridge

    ahhhh alright 1. How did you gat that 1/2 probability 2. ohhhhhhhhhh makes so much more sense 3. " " "
  6. hermine

    Some Permutations Qs Cambridge

    Alright, before i look at the solutions this is what i keep getting for each question 1) For the word UNIFORM, how many arrangements are possible if M is somewhere to the right of U? I somehow figured out there was 6 ways for M to be right of U then x 6! to get the total arrangement OH I...
  7. hermine

    Some Permutations Qs Cambridge

    ahh that would be a big help, thankyou
  8. hermine

    Some Permutations Qs Cambridge

    Have been annoying me for a while, appreciate the help 1) For the word UNIFORM, how many arrangements are possible if M is somewhere to the right of U? 2) Five Backpackersarrive in a city with five youth hostels. Suppose two backpackers are brother and sister, so wish to stay in the same...
  9. hermine

    Permutations Q

    where did you get the 4's from ?
  10. hermine

    Results- How are you going?

    Re: First round assessments English Advanced: 13/15 'Belonging' + related text [speech] Mathematics: 38/40 Locus, Geometrical Applications of Calculus [exam] Chemistry:45/50 Current chemistry related issue [research/presentation], Physics: lol@ our physics teacher Mathematics ext 1...
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