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4.1 Probability (A-level only)

4.1 Probability (A-level only)

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Question 68

A box contains 4 green and 6 yellow balls. A ball is selected at random and replaced. A second ball is then selected.

a.

Find the probability that exactly one selected ball is green.

[3]
b.

Given that exactly one ball is green, find the probability that the first ball is green.

[2]
Markscheme

4.1 Probability (A-level only) Questions

  1. A Level
  2. /Maths
  3. /4.1 Probability (A-level only)

164 exam-style questions on WJEC A Level Maths 4.1 Probability (A-level only), covering 4.1.1 Probability (A-level only), 4.1.2 Probability (A-level only), and 4.1.3 Probability (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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