A system was set up with two redundant subsystems A and B FA

A system was set up with two redundant subsystems A and B. F(A)=0.01, R(B)=0.991. What is the probability of a system failure in the following cases:

a. In order for the system to fail, both must fail.

b. In order for the system to fail, only one must fail.

c. Which case of the two calculated has the highest reliability.

Solution