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Solution of problem N4249 probability theory

Content: teorver_4249.doc (30.00 KB)
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4249. The device consists of two nodes, which during operation can independently fail from each other. Let the probability of failure-free operation of the first unit during the warranty period equal to 0.75, and the second - 0.8. Find the likelihood that during the warranty period the device: a) will work properly; b) will fail (i.e. at least one of the components of the device will fail).
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)
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