Aren't the two logical equivalents? Mistaken Reversal is "confusing Necessary for Sufficient" while it's the other way around for Mistaken Negation. If the answer choice states "confusing Sufficient for Necessary" and the premise contains a mistaken reversal, is that still the correct choice? This has been bothering me a lot.

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4 comments

  • Tuesday, Apr 6, 2021

    Thanks

    I was also attracted to answer choice D; I read the thread and the consensus appears to be that it wasn't describing a flaw at all. Is the conclusion about two beliefs rather than one?

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  • Tuesday, Apr 6, 2021

    The question I am referring to is from PT22.S2.Q25.

    Admin Note: https://classic.7sage.com/lsat_explanations/lsat-22-section-2-question-25/

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  • Tuesday, Apr 6, 2021

    No, I get that but in the question I was doing, it had R--->C in the premises and it concluded C--->R. I thought that was a Mistaken Reversal, or a conflation of necessary with sufficient but the correct answer choice had confusing sufficient with necessary, so I was wondering if that meant MR and Mistaken Negation were logical equivalents and therefore the same.

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  • Tuesday, Apr 6, 2021

    Edit: ill just link the post instead.

    https://forum.powerscore.com/viewtopic.php?p=25134&sid=cdf4058fe906b06db32519e2fb83f1c6#p25134

    I'd also add that technically a mistaken negation (given A→B) is anything that isnt A←some→/B.

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