3. In a ring network consisting of 8 links as shown in the Figure below, there are two paths connecting any two terminals. Assume that links fail independently with probability P, 0 < P < 1. Find the probability of successful transmission of a packet from terminal A to terminal B and explain your answer. (Note: Terminal A transmits the packet in BOTH directions on the ring. Also, terminal B removes the packet from the ring upon reception. Successful transmission means that terminal B received the packet from either direction.) (Hint: Think about the Addition rule in probability.)
A
B