## Exam-Style Question on Probability## A mathematics exam-style question with a worked solution that can be revealed gradually |

Question id: 226. This question is similar to one that appeared on a GCSE Higher paper (specimen) for 2017. The use of a calculator is allowed.

A bag contains balls that are red, blue, green or yellow.

- The number of red balls is \(x-3\).
- The number of blue balls is \(2x\).
- The number of green balls is \(7\).
- The number of yellow balls is \(5x\).

A counter is chosen at random. The probability it is green is \( \frac{7}{52} \)

Work out the probability it is red.

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If you need more practice with basic probability questions try the self-checking interactive exercises called Probability.

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