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2.3 Probability

2.3 Probability

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Question 59
78%

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

a.

Find the probability that the two counters removed are both red.

[2]
b.

Find the probability that the two counters removed are different colours.

[2]
Markscheme

2.3 Probability Questions

  1. A Level
  2. /Maths
  3. /2.3 Probability

200 exam-style questions on OCR A Level Maths 2.3 Probability, covering 2.3.1 Mutually exclusive and independent events, 2.3.2 Diagrams to assist probability calculations, 2.3.3 Conditional probability (A-level only), 2.3.4 Conditional probability from first principles (A-level only), and 2.3.5 Modelling with probability. Each one has a worked solution and a mark scheme showing where the marks go.

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