These diagrams show the rules used to determine the possible list of the types of new and used CDs (J, O, P, R, S) that are on sale.
Refer to these diagrams when solving this game. Copy them on your own page, and on each question make a new version of them in order to follow along with my explanations. You’ll learn much more if you draw along.
The setup section explains how to build this diagram.
Main Diagram
Note: This is perhaps the hardest logic game ever, and the diagram is necessarily rather confusing. Newer games are far easier. However, it can be good training to learn how to make and interpret these diagrams.
Rules
The only rules left are that used pop is always in, and new opera can’t be in:
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MemberAndre Perez says
Rule 2 has been misdiagrammed: it says Jn & Ju -> ~Rn&~ Ru, not either Jn or Ju -> ~Rn&~ Ru. I’m pretty sure I’m correct….
TutorRosalie (LSATHacks) says
Are you talking about the contrapositive? When you take the contrapositive of “and” it would become “or”.
MemberAndre Perez says
The second conditional rule(rule#3) is being used in its original form, and is misdiagrammed I believe. There shouldn’t be an “or” above the arrow. If I’m wrong, my apologies.
Jon says
For the last rule on this page: Used pop is not random, it is always in.
TutorLucas (LSAT Hacks) says
Yes, that’s correct. Thanks for catching that! The page has been updated.