Question: I don't understand what dose the different between the question b and c. I get P(B|A) in question b, but what is question c looking

I don't understand what dose the different between the question b and c. I get P(B|A) in question b, but what is question c looking for????

3. Consider the following portion of an electric circuit with three relays. Current will ow from point A to point B if there is at least one closed path when the relays are activated. The relays may malfunction and not close when activated. Suppose that the relays act independently of each other and close properly when activated with a probability of 0.8. (a) Let R; represent the event that relay 1' closes properly when activated, i= 1, 2, 3. Using these events, write an expression for the event that current will ow when the relays are activated. (b) What is the probability that current will flow when the relays are activated? (c) Given that current owed when the relays were activated, what is the probability that relay 1 functioned

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