I am baffled by this question. I see that the right answer is B, but I can't figure out why it doesn't work. I think I must be missing something pretty obvious.
When I tried M & F together on Team 2, I ended up with --->
Team 1: S, R, J
Team 2, O, M, F
Out: N
Why doesn't this work?
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- OliviaB660
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Vinny Gambini
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Atticus Finch
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Re: Q16
Happy to help. Your diagram ALMOST works, except J can't be in group 1. If M is in group 2, then according to the third rule R and S can't be in group 2.
The contrapositive of the fourth rule is - R2 --> - J1. So if R is not in group 2, J can't be in group 1. And if J can't be in group 1, there's no anthropologist for that group (since F and M are in group 2), and it doesn't work.
Always write out the contrapositives of conditional rules. It just takes a few seconds, and will always be useful.
The contrapositive of the fourth rule is - R2 --> - J1. So if R is not in group 2, J can't be in group 1. And if J can't be in group 1, there's no anthropologist for that group (since F and M are in group 2), and it doesn't work.
Always write out the contrapositives of conditional rules. It just takes a few seconds, and will always be useful.
LSAT Instructor | Manhattan Prep
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