1. A parallel system is composed of 10 identical independent components. If the system reliability R must be 0.99, what is the minimum component reliability? 2. A 10-element system is constructed of...

1. A parallel system is composed of 10 identical independent components. If the system reliability R must be 0.99, what is the minimum component reliability?

2. A 10-element system is constructed of independent identical components so that 5 out of the 10 elements are necessary for system success. If the system reliability R must be 0.99, how good must the components be?