Exam-Style Question on Probability

A mathematics exam-style question with a worked solution that can be revealed gradually

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Question id: 518. This question is similar to one that appeared on a GCSE Higher paper in 2019. The use of a calculator is allowed.

The midnight train to Georgia is not the most reliable. The probability that the train will be late on any day is 0.35

(a) Complete the probability tree diagram for Monday and Tuesday.

Monday                 Tuesday

(b) Work out the probability that the train will be late on at least one of these two days.

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If you need more practice try the self-checking interactive exercises called Tree Diagrams.

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