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Problem 4.3.8. In order to guarantee smooth operation, the University has three web- servers. Each can...

Problem 4.3.8.

In order to guarantee smooth operation, the University has three web- servers. Each can handle the traffic by itself, and the probability that each is not working on a given day is 10%, independently of the other servers. Assuming that the system is up, what is the probability that only one server is functioning?

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