Question: 4.140 A trimotor plane has three enginesa central engine and an engine on each wing. The plane will crash only if the central engine fails

4.140 A trimotor plane has three engines—a central engine and an engine on each wing. The plane will crash only if the central engine fails and at least one of the two wing engines fails. The probability of failure during any given flight is .005 for the central engine and .008 for each of the wing engines. Assuming that the three engines operate independently, what is the probability that the plane will crash during a flight?

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