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# On some hot days the smog in Hillview reaches unsafe levels,

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On some hot days the smog in Hillview reaches unsafe levels, [#permalink]  26 Jul 2012, 11:20
00:00

Difficulty:

65% (medium)

Question Stats:

28% (02:18) correct 71% (01:14) wrong based on 138 sessions
On some hot days the smog in Hillview reaches unsafe levels, and on some hot days the
wind blows into Hillview from the east. Therefore, on some days when the wind blows into
Hillview from the east, the smog in Hillview reaches unsafe levels. The reasoning in the
argument is flawed in that the argument
a) mistakes a condition that sometimes accompanies unsafe levels of smog for a condition that
necessarily accompanies unsafe levels of smog
b) fails to recognize that one set might have some members in common with each of two others
even though those two other sets have no members in common with each other
c) uses the key term “unsafe” in one sense in a premise and in another sense in the conclusion
d) contains a premise that is implausible unless the conclusion is presumed to be true
e) infers a particular causal relation from a correlation that could be explained in a variety of
other ways

Main CR Qs link - cr-qs-600-700-level-131508.html
[Reveal] Spoiler: OA

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Re: CR - Flaw in Argument [#permalink]  27 Jul 2012, 10:14
Can anybody explain this OA
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Re: CR - Flaw in Argument [#permalink]  28 Jul 2012, 16:43
I think E should be the answer here
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Re: CR - Flaw in Argument [#permalink]  28 Jul 2012, 21:39
mohankumarbd wrote:
On some hot days the smog in Hillview reaches unsafe levels, and on some hot days the
wind blows into Hillview from the east. Therefore, on some days when the wind blows into
Hillview from the east, the smog in Hillview reaches unsafe levels. The reasoning in the
argument is flawed in that the argument
a) mistakes a condition that sometimes accompanies unsafe levels of smog for a condition that
necessarily accompanies unsafe levels of smog
b) fails to recognize that one set might have some members in common with each of two others
even though those two other sets have no members in common with each other
c) uses the key term “unsafe” in one sense in a premise and in another sense in the conclusion
d) contains a premise that is implausible unless the conclusion is presumed to be true
e) infers a particular causal relation from a correlation that could be explained in a variety of
other ways

Main CR Qs link - cr-qs-600-700-level-131508.html

I'll take a shot here. Btw, my answer is B.
Stmt 1 - some hot days the smog in Hillview reaches unsafe levels.
Stmt 2 - some hot days the wind blows into Hillview from the east.
Stmt 3 - some days when the wind blows into Hillview from the east, the smog in Hillview reaches unsafe levels. - Conclusion.

The first 2 statement happens when it is a hot day.
Hence "Hot Days" either connected to "smog reaching unsafe level" or "wind blowing from East".
Statement 3, which is a Conclusion talks about "some days" that is unclear in the argument.

Hope it helps!
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Re: On some hot days the smog in Hillview reaches unsafe levels, [#permalink]  07 Nov 2013, 02:06
The source is mentioned as Non Gmat Questions. What is that supposed to mean? Do such questions appear on the GMAT?
Re: On some hot days the smog in Hillview reaches unsafe levels,   [#permalink] 07 Nov 2013, 02:06
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