I’ll confess that I took a while to answer this question. When I first did the game, I hadn’t realized that rule 2 meant that Z had to be in 1pm.
If you already made that deduction up front, the question is easy: E is CORRECT.
Otherwise, you can use process of elimination to eliminate the answers. There are two ways to eliminate an answer:
- If it allows something that can’t happen.
- If it forbids something that normally can happen.
Many scenarios contradict A. Long doesn’t have to be at 3pm. For example, this scenario is fine according to the normal rules:
B is true, but you’re not just looking for an answer that is true. You’re looking to replace the rule. B allows (wrong) scenarios like this:
C is also true, but doesn’t actually replace the rule. It allows wrong scenarios like this:
D is also something that must be true, but doesn’t actually replace the rule. It allows wrong scenarios like this:
I’ll expand on why E is CORRECT. The only speaker that can go before Z is M. But to place Z at 2pm we need two speakers to go before Z. That’s because there are always two speakers at 1pm.
Since there aren’t two speakers who can go before Z, we can’t put Z at 2pm. Therefore Z always speaks at 1pm.
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