(a)[2]
Complete the tree diagram shown.
(b)[2]
Work out the probability that Li does not stop at both sets of traffic lights for his journey.
Mathematics 0580 · IGCSE · Probability of combined events
Probability of combined events — practice question
On Li’s trip to work, there are 2 sets of traffic lights. The chance that he stops at the first set is 0.4, while the chance that he stops at the second set is 0.7.
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This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “0.6 on the first branch, or 0.7 and 0.3 correctly placed on all second branches” …
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