2025 NYJC P2 Q6

2025 NYJC P2 Q6

6 marks

Two fair six-sided dice are thrown. Events \(A\), \(B\) and \(C\) are defined as follows.

\(A\): sum of the two scores is odd
\(B\): at least one of the two scores is greater than \(4\)
\(C\): the two scores are equal

  1. Find, giving your reasons clearly in each case, which pair of the events are
    1. mutually exclusive,[1]
    2. independent.[3]
  2. Find \(\mathrm{P}(C \mid B)\).[2]

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Answer:(a)(i) \(A\) and \(C\) (ii) \(A\) and \(B\) (b) \(\frac1{10}\)

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