(a)[3]
Calculate the probability that the three cars are all the same colour.
(b)[4]
Find the probability that, when the 3 cars are chosen, at least one car is white and at least one car is black.
Mathematics 9709 · AS & A Level · Probability
Probability — practice question
Eddie owns 16 toy cars: 8 are white, 5 are black and 3 are silver. He puts every car into a bag, then chooses three at random without replacement.
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This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Correct probability expression for one valid case (product of three fractions or combinations).” …
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