Final answer:
To determine the probability that the system will operate under each given condition, multiply the probabilities of each individual event.
Step-by-step explanation:
To determine the probability that the system will operate under each of the given conditions, we need to multiply the probabilities of each individual event. The probability of the system operating under condition a is 0.72 * 0.72 = 0.5184. The probability of the system operating under condition b is 0.72 * 0.72 = 0.5184. The probability of the system operating under condition c is 0.72 * 0.72 = 0.5184. Finally, the probability of the system operating under condition d is 0.72 * 0.72 = 0.5184.