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tenured faculty

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by fibbonnaci » Wed Dec 23, 2009 5:57 am
Not all tenured faculty are full professors. Therefore, although every faculty member in the linguistics department has tenure, it must be the case that not all of the faculty members in the linguistics department are full professors.

The flawed pattern of reasoning exhibited by the argument above is most similar to that exhibited by which one of the following?

(A) Although all modern office towers are climate-controlled buildings, not all office buildings are climate-controlled. Therefore, it must be the case that not all office buildings are modern office towers.
(B) All municipal hospital buildings are massive, but not all municipal hospital buildings are forbidding in appearance. Therefore, massive buildings need not present a forbidding appearance.
(C) Although some buildings designed by famous architects are not well proportioned, all government buildings are designed by famous architects. Therefore, some government buildings are not well proportioned.
(D) Not all public buildings are well designed, but some poorly designed public buildings were originally intended for private use. Therefore, the poorly designed public buildings were all originally designed for private use.
(E) Although some cathedrals are not built of stone, every cathedral is impressive. Therefore, buildings can be impressive even though they are not built of stone.
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Source: — Critical Reasoning |

by hrishi19884 » Wed Dec 23, 2009 7:02 am
IMO C
Hrishi

"As you sow, so shall you reap"
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by fibbonnaci » Wed Dec 23, 2009 9:39 am
yes OA is C. explanations please.
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by hrishi19884 » Wed Dec 23, 2009 10:01 am
Not all tenured faculty are full professors. Therefore, although every faculty member in the linguistics department has tenure, it must be the case that not all of the faculty members in the linguistics department are full professors.

The flawed pattern of reasoning exhibited by the argument above is most similar to that exhibited by which one of the following?


(A) Although all modern office towers are climate-controlled buildings, not all office buildings are climate-controlled. Therefore, it must be the case that not all office buildings are modern office towers.
Incorrect : It states opposite ideas in the first line itself "all are climate control...not all are climate controlled". Question does not indicate any contrast ideas.

(B) All municipal hospital buildings are massive, but not all municipal hospital buildings are forbidding in appearance. Therefore, massive buildings need not present a forbidding appearance.
Incorrect: Two characteristics are described here 1)massive 2) appearance wrt hospitals, relation of both of them with each other is not given.

(C) Although some buildings designed by famous architects are not well proportioned, all government buildings are designed by famous architects. Therefore, some government buildings are not well proportioned.
Correct: Co-relation between "famous architects" and "proportionate" is been given. Also "tenure faculty" can be compared to "famous architects" and "full professors" to "proportionate" it gives exact relation.

(D) Not all public buildings are well designed, but some poorly designed public buildings were originally intended for private use. Therefore, the poorly designed public buildings were all originally designed for private use.
Incorrect : "poorly designed public buildings were originally intended for private use" and "some poorly designed public buildings were originally intended for private use" have contrast ideas that do not relate to our question.

(E) Although some cathedrals are not built of stone, every cathedral is impressive. Therefore, buildings can be impressive even though they are not built of stone.
Incorrect : Relation between "impressive" and "stone" is nowhere mentioned. Hence insufficient.


Hope that suffice you! ;-)
Hrishi

"As you sow, so shall you reap"
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by fibbonnaci » Wed Dec 23, 2009 10:18 am
heyy thanks a lott man. it was helpful!
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by hrishi19884 » Wed Dec 23, 2009 10:27 am
more than welcome!!
Hrishi

"As you sow, so shall you reap"
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by Testluv » Thu Dec 24, 2009 12:07 am
A good approach on parallel flaw questions is to abstract the argument. All you care about is the structure (the definition of parallel reasoning is that the same kind of conclusion follows from the same kind of evidence). This approach can get you to the correct answer even if you don't recognize the flaw in reasoning.

Evidence: Some X (tenured faculty) are not Y (full profs)

Conclusion: It must be the case that at least one X in a particular group of Xs (ling dept) is not a y (full prof)

So, the argument can be reduced to: "Because some Xs are not Y, it MUST be the case that at least one X in this group of Xs is not a Y."

The argument is clearly flawed, and now we just scan the choices, eliminating those that are obviously wrong. Of the remaining ones, we see which one will match this structure.

Choice C:

Evidence: some X (bldgs designed by famous architects) are not Y (well proportioned)

Conclusion: It must be the case that at least one X in a particular group of Xs (government bldgs) is not Y (well proportioned)

So, clearly choice C is parallel. Parallel reasoning questions are staple on the LSAT. I answered this question but I have yet to see a parallel reasoning question in any OG or GMATprep. I think your chances of getting one on the GMAT are slim.
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by hrishi19884 » Thu Dec 24, 2009 12:34 am
that's really a nice explanation, thanks testluv.
Hrishi

"As you sow, so shall you reap"
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by fibbonnaci » Thu Dec 24, 2009 12:53 am
awesum explanation Testluv. thank you
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