Explanation
To find the probability of the intersection of three events A1,A2, and A3, we use the General Multiplication Rule of probability.
The probability of the intersection of multiple events is given by the product of the probability of the first event and the conditional probabilities of the subsequent events, given that the preceding events have already occurred.
The formula is:
P(A1∩A2∩A3)=P(A1)⋅P(A1A2)⋅P(A1∩A2A3)
Comparing this to the given options, we see that option (b) correctly represents this chain rule of probability.
Correct Option: (b)