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Probability Trees

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Question 32

Ahmed is going to sit a Biology exam and a Chemistry exam.

The probability he will pass the Biology exam is 0.9.

The probability he will pass the Chemistry exam is 0.7.

The results of the two exams are independent.

a.

Complete the probability tree diagram.

A probability tree diagram for Biology and Chemistry outcomes.

[2]
b.

Work out the probability that Ahmed will pass both exams.

[2]
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Probability Trees Questions

  1. GCSE
  2. /Maths
  3. /Probability Trees

54 exam-style questions on Edexcel GCSE Maths Probability Trees. Each one has a worked solution and a mark scheme showing where the marks go.

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