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Question 113

A bag contains 10 blue counters, 8 red counters and 6 green counters. Two counters are removed from the bag at random.

a.

Verify that the probability that the two counters removed are both red is 769\displaystyle \frac{7}{69}697​

[2]
b.

Verify that the probability that the two counters removed are different colours is 4769\displaystyle \frac{47}{69}6947​

[2]
Markscheme

Probability Questions

  1. A Level
  2. /Maths
  3. /Probability

186 exam-style questions on Edexcel A Level Maths Probability, covering 5.1 Calculating Probabilities, 5.2 Venn Diagrams, 5.3 Mutually Exclusive and Independent Events, and 5.4 Tree Diagrams. Each one has a worked solution and a mark scheme showing where the marks go.

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