Question 21:
I don't understand how the answer to this question is (C), or "four." I've gone over it multiple times. It doesn't make sense according to the wording of the question. It reads:
"If Pavlovich and Tsudama are teammates, then for how many of the individuals can it be exactly determined where his or her team places?"
The key word here is "exactly."
Tsudama is on the second place team, so Pavlovich is also on the second place team.
Sethna is on the team from Gillom High, which places higher than the team from Hilltop High, so we can infer that Sethna is on the first place team (since S does not fit in the second place team, and cannot be last place). Easy enough. Also Gillom is first place, but that doesn't really matter.
Since Pavlovich places higher than Navarro, then Navarro must be on the third place team.
Now we know that S is on the first place team, and N is on the third place team. Thus, I answered (A) to this question, which is "two." The "correct" answer is "four."
Problem:
How can it be EXACTLY determined where Mei and O'Rourke place? In this case it seems that they are interchangeable between the first- and third-place teams. Mei is not on the same team as Pavlovich; this does not place Mei first or third. O'Rourke is a random; same deal. Therefore, in this situation their placement doesn't matter, and as such cannot be EXACTLY determined.
I truly believe this is a mistake by the authors. I don't understand why nobody else on here has had a problem with this. It's the only one I got wrong!