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2.3.2 Conditional probability (A-level only)

2.3.2 Conditional probability (A-level only)

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Question 56

A bag contains 10 blue counters, 8 red counters and 6 green counters.

Two counters are removed from the bag at random, one after the other, without replacement.

a.

Draw a tree diagram to represent this information.

[2]
b.

Find the probability that both counters removed are green.

[2]
c.

Given that at least one of the counters removed is red, find the probability that both counters are red.

[3]
Markscheme

2.3.2 Conditional probability (A-level only) Questions

  1. A Level
  2. /Maths
  3. /2.3.2 Conditional probability (A-level only)

164 exam-style questions on AQA A Level Maths 2.3.2 Conditional probability (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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