(a)[2]
Complete the tree diagram
(b)[2]
Find the probability that both batteries Mai buys are faulty.
(c)[1]
A shop sells 3000 batteries in one month. Work out the expected number of faulty batteries sold by the shop.
Mathematics 0580 · IGCSE · Probability of combined events
Probability of combined events — practice question
Mai purchases two batteries. The probability that a battery is faulty is $\frac{1}{10}$.
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