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Exam-style practice

Probability of combined events answer explanations

Review worked answers and explanations for Probability of combined events. Aligned to Cambridge IGCSE Mathematics.

Answer explanations

Question 1 of 2

Review the answer support, then move sideways through the set.

Paper 2 structured question: Probability of combined events

Paper 2Core or Extended Mathematics3 marks

Description

Probability with Replacement

Calculate the probability of drawing two red balls in succession from a bag containing 3 red balls and 2 blue balls, with replacement.

  1. a

    Calculate the probability of drawing a red ball on the first draw.

    [1]
  2. b

    Calculate the probability of drawing two red balls in succession.

    [2]