In an electric circuit, three components A, B and Care arranged as depicted in the following diagram. What is the probability that the circuit remains closed? [Note: The circuit remains closed if the...

In an electric circuit, three components A, B and Care arranged as depicted in the following diagram. What is the probability that the circuit remains closed? [Note: The circuit remains closed if the electric current can pass through, that is, if there is a path from left to right through non-failing components. For instance, if B and C are both functional, then the circuit is closed, but if A and B both fail, then the circuit is not closed anymore.]