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4.1.1 Probability (A-level only)

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Question 13

A drawer contains 6 black socks, 10 blue socks, and 4 white socks. Two socks are removed from the drawer at random without replacement.

a.

Draw a tree diagram to represent this information.

[3]
b.

Find the probability that the two socks removed are both white.

[2]
c.

Given that at least one of the socks removed is blue, find the probability that both socks are blue.

[3]
Markscheme

4.1.1 Probability (A-level only) Questions

  1. A Level
  2. /Maths
  3. /4.1.1 Probability (A-level only)

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

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