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  1. R

    Paper Leak!

    I've heard rumours that the Physics paper has been leaked out. Can anyone confirm/deny this???
  2. R

    Probability Question

    A probability question from the 2003 HSC Exam. I have found some differing solutions from from popular textbooks, and am not sure which one is correct: Q:4.(c) A hall has n doors. Suppose that n people choose any door at random to enter the hall. (i) In how many ways can this be done? (ii)...
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