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## #2 - Global, Cannot Be True

• PowerScore Staff
• Posts: 8540
• Joined: Feb 02, 2011
#41312
Complete Question Explanation
(The complete setup for this game can be found here: lsat/viewtopic.php?t=15710)

The correct answer choice is C)

From our Not Laws we know that M cannot be added first, and thus answer choice (C) is correct.
Michaeljstrick3
• Posts: 1
• Joined: Mar 25, 2021
#91428
I see how answer choice B works, but I need help understanding how answer choice B is incorrect.

If the 2nd conditional rule states: Z1 --> (L--O), wouldn't the contrapositive be: (O--L) ---> (Z not 1).

Using this logic, the Lentils (L) couldn't be added first if Z is first, AND it also couldn't be added first if Z isn't first because it would have to be behind the Onions (O).

Could you please explain how my logic is off here?
Robert Carroll
• PowerScore Staff
• Posts: 1052
• Joined: Dec 06, 2013
#91438
Michael,

It appears that you used a Mistaken Reversal of the contrapositive. The NECESSARY condition in that is that Z is not 1. That's not the sufficient condition of anything. So if Z is not 1...nothing happens. To think otherwise is a Mistaken Reversal.

Robert Carroll

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