Solution of problem N958 Poisson probability theory

Solution of problem N958 Poisson probability theory

958. The device consists of 1000 elements working independently of each other. The probability of failure of any element within an hour is 0.002. Find the probability that within an hour no more than two elements will fail.

Additional information:

Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)

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