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Exam-style practice

Conditional probability answer explanations

Review worked answers and explanations for Conditional probability. 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: Conditional probability

Paper 2Core or Extended Mathematics3 marks

Description

Conditional Probability with Balls

A bag contains 5 red balls and 3 blue balls. A ball is drawn at random, not replaced, and then another ball is drawn.

  1. a

    Calculate the probability that the second ball drawn is red, given that the first ball drawn was blue.

    [3]