Q9

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ManhattanPrepLSAT1
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Q9

by ManhattanPrepLSAT1 Tue Nov 24, 2015 2:58 pm

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MikaylaF930
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Re: Q9

by MikaylaF930 Tue Sep 08, 2020 9:19 pm

Can someone explain why H must go in the Sports section? Can't the Sports section be both F? Thanks!
 
ShariS937
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Re: Q9

by ShariS937 Fri Oct 23, 2020 4:06 pm

It looks like this is a double-inference, or an inference derived from two rules working together.

Conditional Sketch:
L: GH
M: G / H and ?
S: FH (no S: G allowed, and we can't have S: FF bc we'd need L: HH for that outcome to happen)

Long Way Around:
Given
L: GH

Rule 2 says one of L must be in M, so
L: GH
M: G / H and ?
This is a MBT, so the ? means this second slot is probably irrelevant to the question. Put your placeholder "?" and move to the next rule.
Geek note; we're hunting for something that MBT and M only gives us 3 things that CBT. Tricky, but that means there's more to uncover. (:

Rule 3 says however many of H are in Lifestyle there is an equal number of F in Sports, so
L: GH
M: G / H and ?
S: F ?
Rule 4 says no G in S, so - from here, the question is who among M: G / H / ? must join S: F ?
G can't come over, so H must. Since we don't know who the second person in M must be (it could be G, H or F), H is the only element (within the given info) that has to go into S. Also, since we can't have S: FF and we can't have S: FG. S: FH is the only option.

Brute Force:
Looking back at the answer choices, 3 are about who must be in the Metro column (with all those could-be elements!).
Consider testing the two choices that ask about Sports first (D and E). E is obviously MBF, if you test it against rule 3.
If you've given this game too much time and only have a couple seconds left to spend on this single question, jump on D, flag in case you have time left to review, and move on.