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Mathematics, 15.07.2020 02:01 timothytomas2046

On a rainy day, a child is counting the number of trucks that passes by his window. He exclaims, "I counted 10 cars before I saw a truck!" Assume the probability of each vehicle being a truck is both independent and equal to the probability of the next vehicle being a truck. If the mean number of observed cars is indeed 10 before a truck is seen, what is the probability of the next vehicle being a truck?

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