abhelsammiedestep abhelsammiedestep

17-06-2016
Mathematics

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The train station runs trains every 30 minutes. find the probability that a passenger who arrives at a random time will not have to wait more than 20 minutes.

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Ckaranja Ckaranja

18-06-2016

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As the train arrives every 30 minutes, the chance of waiting for 20 minutes or less is 20 out of 30

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