A museum archive contains 13 ancient scrolls that require restoration: 6 from the Dynasty era, 4 from the Classical era and 3 from the Hellenistic era.
The curator selects two scrolls at random, one after the other, without replacement.
Draw a tree diagram to show the possible outcomes and their probabilities.
Find the exact probability that the curator selects one Classical era scroll and one Hellenistic era scroll.
198 exam-style questions on AQA A Level Maths 2.3 M: Probability, covering 2.3.1 Mutually exclusive and independent events, 2.3.2 Conditional probability (A-level only), 2.3.3 Modelling with probability (A-level only), and 2.3 M: Probability. Each one has a worked solution and a mark scheme showing where the marks go.