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Back to AQA Maths Higher November 2018 Paper 2 Home
​Q18: Question – Paper 2 – November 2018
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Content:
  • Working Out Probability
  • Combined Events – Probabilities: Part 1
  • Combined Events – Probabilities: Part 2
Quizzes:
  • Working Out Probability​
  • Combined Events – Probability

Question
18) A bag contains 20 discs.
10 are red, 7 are blue and 3 are green. 18

18 a) Marnie takes a disc at random before putting it back in the bag.
Nick then takes a disc at random before putting it back in the bag.
Olly then takes a disc at random.

​Work out the probability that they all take a red disc.
[2 marks]
18 b) All 20 discs are in the bag.
  • Reggie takes three discs at random, one after the other.
  • After he takes a disc he does not put it back in the bag. Reggie’s first disc is blue.

Work out the probability that all three discs are different colours. 
[3 marks]
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