December 2000 LSAT Section 4 Question 7

If both martins and harriers are in the forest, then which one of the following must be true?

Fiallos.Luis11 on March 30, 2021

Can J and S be together?

I knew E was the answer that made the most sense but I did not choose it because I took the "at most" part of the answer are one or the other or both, but the rule says not J then S and the contrapositive is not S then J. Does that preclude J from being with S? Did I make the correct inference? Can they be together?

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Emil-Kunkin on November 22 at 05:20PM

They can indeed be together. You are right about the rule and it's contrapositive:

If not j then s
If not s then j.

Neither of these tell us anything about them both bring in, it merely bans both from being out.