Question: 11.21. Component A has reliability 0.9 when used for a particular purpose. Com- ponent B which may be used in place of component A has

11.21. Component A has reliability 0.9 when used for a particular purpose. Com- ponent B which may be used in place of component A has a reliability of only 0.75. What is the minimum number of components of type B that would have to be hooked up in parallel in order to achieve the same reliability as component A has by itself?

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