Solution of problem N4615 Poisson probability theory

Solution of problem N4615 Poisson probability theory

4615. The device consists of 2000 independently operating elements. The probability of failure of one element during the year is 0.0005. Find the probability of failure within a year of two elements.

Additional information:

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

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