Question #1739

Confusing

Started by sairaj87 · started 2014-09-05 05:00 · last activity 2014-09-05 17:16 · 2 replies

This question is confusing because it says if n and o are at different clinics.... Can there not be two different scenarios ??? S:NPJ R: OLK OR S:OLK R:NPJ The question stem does not specify which clinic it just says different clinic so how would I know which clinic??

Replies

  1. Mehran · 2014-09-05 16:03

    Thanks for your message. As for your question, your second scenario conflicts with Rule #4, i.e. "If Nance is at Randsborough, then so is Onawa." This rule is diagrammed as follows: Nr ==> Or not Or ==> not Nr However, we can rewrite the contrapositive because we know that if someone is not at Randsborough, they must be at Souderton. As such, the contrapositive can be re-written as follows: Os ==> Ns So again, Rule #4 is diagrammed as follows: Nr ==> Or Os ==> Ns As such, the only possibility that exists where N and O are at different clinics is O at R and N at S (i.e. look at the necessary conditions). You can also access the video explanation for this question by selecting the play icon in the top right hand corner of the screen when viewing this question. Hope this helps! Please let us know if you have any other questions.

  2. sairaj87 · 2014-09-05 17:16

    Thank you !

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