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# LSAT Kasheska: Chain of Reasoning over Italian Wine

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Eternal Intern
Joined: 07 Jun 2003
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LSAT Kasheska: Chain of Reasoning over Italian Wine [#permalink]

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27 Jul 2003, 12:13
All actors are exuberant people and all exuberant people are extroverts, but nevertheless it is true that some shy people are actors.
Which of the following are not true? (A) Some shy people are extroverts
( B) Some shy extroverts are not actors
Suspicion: Do we start here
Some shy people are actors. In order to be a shy extrovert, it must be that some shy people are actors. ? All actors have to be exuberant. This leads them to being extroverted. Thus, some shy extroverts have to be actors.

C) Some exuberant people who are actors are shy.

D) All people who are not extroverts are not actors.
E) Some extroverts are shy.

Last edited by Curly05 on 28 Jul 2003, 08:00, edited 1 time in total.

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SVP
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27 Jul 2003, 21:37
I cannot choose among B, C, and D.
but vote for C in the final analysis

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GMAT Instructor
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Re: LSAT Kasheska: Chain of Reasoning over Italian Wine [#permalink]

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28 Jul 2003, 00:10
Curly05 wrote:
All actors are exuberant people and all exuberant people are extroverts, but nevertheless it is true that some shy people are actors.

(A) Some shy people are extroverts
( B) Some shy extroverts are not actors
Suspicion: Do we start here
Some shy people are actors. In order to be a shy extrovert, it must be that some shy people are actors. ? All actors have to be exuberant. This leads them to being extroverted. Thus, some shy extroverts have to be actors.

C) Some exuberant people who are actors are shy.

D) All people who are not extroverts are not actors.
E) Some extroverts are shy.

Hey Curly:

Are you sure you didn't leave out some crucial part ot the question. Maybe something like: Which of the following is NOT necessarily true?

A). Since ALL actors are both exuberant and extroverts, and some shy people are actors, then those shy people who are actors are also extroverts. (TRUE)

B) There is nothing in the statement that precludes the possibility that of all the extroverts, ONLY actors are shy. If that is so then B is FALSE.

C). Since all actors are exuberant, those actors that are shy are also exuberant. TRUE

D). Since all actors are extroverts (if "ACTOR" then "EXTROVERT"), then if you are not an extrovert, you cannot be an actor (contrapositive: if NOT "EXTROVERT" then NOT "ACTOR"). TRUE

E). Since all actors are extroverts, those actors that are shy are also extrovert. TRUE
_________________

Best,

AkamaiBrah
Former Senior Instructor, Manhattan GMAT and VeritasPrep
Vice President, Midtown NYC Investment Bank, Structured Finance IT
MFE, Haas School of Business, UC Berkeley, Class of 2005
MBA, Anderson School of Management, UCLA, Class of 1993

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Eternal Intern
Joined: 07 Jun 2003
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28 Jul 2003, 08:03
Is my chain of reasoning, right?

Explain, captain akami, why B is wrong.
_________________

Ride em cowboy

Kudos [?]: 166 [0], given: 0

GMAT Instructor
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Kudos [?]: 235 [0], given: 0

Location: New York NY 10024
Schools: Haas, MFE; Anderson, MBA; USC, MSEE

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28 Jul 2003, 17:20
Curly05 wrote:
Is my chain of reasoning, right?

Explain, captain akami, why B is wrong.

B) There is nothing in the statement that precludes the possibility that of all the extroverts, ONLY actors are shy. If that is so then B is FALSE.
_________________

Best,

AkamaiBrah
Former Senior Instructor, Manhattan GMAT and VeritasPrep
Vice President, Midtown NYC Investment Bank, Structured Finance IT
MFE, Haas School of Business, UC Berkeley, Class of 2005
MBA, Anderson School of Management, UCLA, Class of 1993

Kudos [?]: 235 [0], given: 0

28 Jul 2003, 17:20
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