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4.4 Probability (A-level only)

4.4 Probability (A-level only)

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Question 123

The events A A\,A and B B\,B are such that P(A)=516P(A) = \dfrac{5}{16}P(A)=165​, P(B)=12P(B) = \dfrac{1}{2}P(B)=21​ and P(A∣B)=14P(A \mid B) = \dfrac{1}{4}P(A∣B)=41​.

a.

Find P(A∩B)P(A \cap B)P(A∩B).

[2]
b.

Find P(B′∣A)P(B' \mid A)P(B′∣A).

[3]
Markscheme

4.4 Probability (A-level only) Questions

  1. A Level
  2. /Maths
  3. /4.4 Probability (A-level only)

164 exam-style questions on CCEA A Level Maths 4.4 Probability (A-level only), covering 4.4.1 Probability (A-level only), 4.4.2 Probability (A-level only), and 4.4.3 Probability (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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