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O-LevelMathematicsProbability4024/11 · Oct/Nov 2013 · Q204 Marks

Two bags contain beads. The first bag contains 2 white, 2 red and 3 black beads. The second bag contains 3 white and 2 black beads. One bead is taken, at random, from each bag. The tree diagram is shown below. [Figure X.X] Find the probability that

  1. (a)both beads are white,[1]
  2. (b)both beads are red,[1]
  3. (c)exactly one bead is black.[2]

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About this question

Topic
Probability, O-Level Mathematics (syllabus 4024). Structured question, 4 marks.
Source
O-Level Mathematics, Oct/Nov 2013 Paper 1 Variant 1, question 20.

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