Haha, I bet the exam writers thought they were being really clever with this one. But now that we've worked it out, it doesn't seem too bad. Just gotta remember that conditional probability formula, right?
Yeah, you're right. The formula we want is P(E1,E2,E3)/P(E2,E3), which is option B. This gives us the probability of E1 occurring, given that E2 and E3 have also occurred.
Okay, let's think this through step-by-step. We have three events, E1, E2, and E3, and we're supposed to find a formula that's always equal to P(E1|E2,E3). Hmm, I think the key here is to use the definition of conditional probability.
Wow, this conditional probability question looks quite tricky. I'm not sure I fully understand the relationship between the different events and the formula we're supposed to use.
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