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  1. M

    Trial paper question

    I am asking for question 5...is the question faulty or im missing something, cant seem to understand why there is a 1-g'(a) in the denominator...
  2. M

    2012 4unit paper

    funny thing is, the solutions are web-wide easy to find, yet the papers are hidden?? what logic is that?
  3. M

    worked solution for 4unit patel

    So does anyone have it?
  4. M

    2012 4unit paper

    I would like to ask the same question
  5. M

    question

    yes, 540 or 1080. Personally i think it is 1080 because urns are non-identical
  6. M

    question

    what do you mean? What i wrote there was trying to clarify whether to divide 2! Or not
  7. M

    question

    so for example, Case 1: balls B,C,D,E in urn A, ball A in urn B and ball F in urn C Case 2: balls B,C,D,E in urn A, ball F in urn B and ball A in urn C Would you call that same outcome or different? I would say, they are same outcome IF urns are identical, but this is clearly not the case...
  8. M

    question

    no, but if you think about it, ball A goes into urn B or ball A goes into urn C is 2 different outcomes since the urns are NON-IDENTICAL, correct?
  9. M

    2012 4unit paper

    yes, i did, searched mixtures of words "2012 extension 2 HSC paper", etc and i can find solution but not the actual PAPER
  10. M

    question

    My way of thinking is there are 3 cases: Case 1: one urn has 4 balls, one urn has 1, another urn has 1. So we do 6C4 * 2C1 * 1C1 to choose the balls, then arrange them so 3!, and we DO NOT divide by 2! because the urns are NOT IDENTICAL, is this correct? This is the part that i am confused, to...
  11. M

    2012 4unit paper

    Does anyone know where i can download the paper?
  12. M

    question

    Q: find the number of ways that 6 different coloured balls can be placed in 3 non-identical urns so that no urn is empty. Answer 1: 540 Answer 2: 1080 Which one is correct and why?
  13. M

    Kings and sydney grammar trial

    kings trial 2012 anyone willing to share?
  14. M

    Homebush trial solutions

    He probably has a friend/relative done the paper but has question he cant answer.
  15. M

    Kings and sydney grammar trial

    Can someone please upload sydney grammar and/or kings 2012 trial paper!!! I reckon they are hard and i would like to practise on that asap.
  16. M

    Homebush trial solutions

    If you can upload the paper first, then i can make one for you.
  17. M

    probability question

    mathman help?
  18. M

    probability question 2

    I still don't get why the jars with 2 marbles are identical? aren't the jars different and so are the marbles?
  19. M

    probability question

    once you chose 52C1 * 3C1 /2!, you have a pair, and you DONT want another pair from then on. you have 48 cards to choose from (since you dont want any of the first 2 cards and the 2 cards that has the same number), so 48C1, the next one cant be the same number, so choose one from 44, ie 44C1...
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