Exam-Style Question on Probability
A mathematics exam-style question with a worked solution that can be revealed gradually
Question id: 400. This question is similar to one that appeared on a GCSE Higher paper in 2017. The use of a calculator is allowed.
The Venn diagram represents a collection of 40 books on sale in an online store.
P represents the books available in paperback format.
D represents the books available in digital format.
(a) One book from the collection is picked at random. Work out the probability that the book is available in digital format.
(b) One of the books that is available in paperback format is picked at random. Work out the probability that this book is also available in digital format.
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