Given the reliability block diagram below, and the reliabilities listed, determine the system reliability. Note: You can and should treat the b-c series sub-block as a subsystem and calculate the subsystem reliability (according to the familiar product form); the same can be said about the d-e series sub-block. This results in a reduction of the block diagram to one involving only four components/subsystems. This resulting four-component system is very similar to the one we discussed in the class. Use both the state-enumeration method and the (minimum) path-set (i.e., tie-set) method, to solve the problem, and make sure that they produce the same result

Ra=0.90,Rb=0.95,Rc=0.95,Rd=0.95,Re=0.95,Rf=0.90