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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: 654. This question is similar to one that appeared on a GCSE Higher paper in 2020. The use of a calculator is allowed.

There are some discarded marker pens in a bin.

The pens are blue or green or red or yellow.

The table shows the probabilities that a pen taken at random from the bin will be red or yellow.

Colour Blue Green Red Yellow
Probability     0.44 0.12

The probability that a pen taken at random from the bin will be blue is three times the probability that the pen will be green.

There are 500 pens in the bin.

Work out the number of green pens in the bin.

Pens in bin

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

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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