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Suppose that the life expectancy (unit: year) of a type of washing machine is a random variable, which obeys the exponential distribution with parameter 1

Suppose that the life expectancy (unit: year) of a type of washing machine is a random variable, which obeys the exponential distribution with parameter 1 =0.2 . If 6 of this type of washing machine are purchased. Find the probability that the life of 2 washing machines will exceed 10 years.(keep the constant e in the final result)

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