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Exam-Style Question on Probability

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

List Of Questions Exam-Style Question More Probability Questions More on this Topic

Question id: 549. This question is typical of the type of question in an A-Level examination. The use of a calculator is allowed.

Mathsland's national currency comes in denominations of 1 unit, 5 units, 10 units and 50 units. Sofya places this collection of these coins in her purse then, without looking, takes out two coins at random, one after the other.

Mathsland Coins

Draw a tree diagram to represent the situation and then use it to calculate the probability that the second coin that Sofya takes out of her purse has a greater value than the first.

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Example

Dent

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

The exam-style questions appearing on this site are based on those set in previous examinations (or sample assessment papers for future examinations) by the major examination boards. The wording, diagrams and figures used in these questions have been changed from the originals so that students can have fresh, relevant problem solving practice even if they have previously worked through the related exam paper.

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