Mathematics (AS & A Level) · Feb / March 2025 · Paper 52 · Question 1
9709
As printed in the paper
The question as text
Jacob throws three coins at the same time. The first coin is biased so that the probability of obtaining a head when it is thrown is 3 1. The second coin is biased so that the probability of obtaining a head when it is thrown is 4 1. The third coin is biased so that the probability of obtaining a head when it is thrown is 5 1. The random variable X is the number of heads obtained.
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1(a)[1]
1(b)[3]
1(c)[2]
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