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Formal Logic Question

General questions relating to the LSAT or LSAT preparation.
 kcho10
  • Posts: 68
  • Joined: Nov 02, 2015
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-  Sat May 13, 2017 2:37 pm #34837
Hi,

I was reviewing formal logic and it says that A--Most-->B--Most-->C does not yield any inferences unless we know more about the total size of the groups.

Can someone explain why we can't conclude A some C regardless of the group size? This concept confuses me.. An example scenario would also be helpful. Thank you
 Kristina Moen
PowerScore Staff
  • PowerScore Staff
  • Posts: 230
  • Joined: Nov 17, 2016
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-  Tue May 16, 2017 6:57 pm #34944
Hi kcho,

If we know A :most: B and B :most: C, we can't infer that A and C have any people in common.

Imagine:
A has 3 people and 2 of them are Bs.

B has 5 people, and 3 of them are Cs. But the 2 who are NOT are the ones who are As.
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