A bag contains 10 blue counters, 8 red counters and 6 green counters. Two counters are removed at random, without replacement.
Find the probability that both counters are red.
Find the probability that the two counters are different colours.
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.