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# To become an expert on a musical instrument, a person must

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Director
Joined: 12 Oct 2008
Posts: 545
To become an expert on a musical instrument, a person must [#permalink]

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20 Jan 2009, 20:12
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To become an expert on a musical instrument, a person must practice. If people practice a musical instrument for three hours each day, they will eventually become experts on that instrument. Therefore, if a person is an expert on a musical instrument, that person must have practiced for at least three hours each day.

Which one of the following most accurately describes a flaw in the reasoning above?

(A) The conclusion fails to take into account that people who practice for three hours every day might not yet have reached a degree of proficiency that everyone would consider expert.

(B) The conclusion fails to take into account that practicing for less than three hours each day may be enough for some people to become experts.

(C) The conclusion fails to take into account that if a person has not practiced for at least three hours a day, the person has not become an expert.

(D) The conclusion fails to take into account that three consecutive hours of daily practice is not recommended by all music teachers.

(E) The conclusion fails to take into account that few people have the spare time necessary to devote three hours daily to practice.
SVP
Joined: 04 May 2006
Posts: 1895
Schools: CBS, Kellogg
Re: CR: To become an expert [#permalink]

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21 Jan 2009, 00:48
To become an expert on a musical instrument, a person must practice. If people practice a musical instrument for three hours each day, they will eventually become experts on that instrument. Therefore, if a person is an expert on a musical instrument, that person must have practiced for at least three hours each day.

Which one of the following most accurately describes a flaw in the reasoning above?

(A) The conclusion fails to take into account that people who practice for three hours every day might not yet have reached a degree of proficiency that everyone would consider expert.

(B) The conclusion fails to take into account that practicing for less than three hours each day may be enough for some people to become experts.

(C) The conclusion fails to take into account that if a person has not practiced for at least three hours a day, the person has not become an expert.

(D) The conclusion fails to take into account that three consecutive hours of daily practice is not recommended by all music teachers.

(E) The conclusion fails to take into account that few people have the spare time necessary to devote three hours daily to practice.

C is the best, explain if correct, so tired now
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SVP
Joined: 17 Jun 2008
Posts: 1549
Re: CR: To become an expert [#permalink]

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21 Jan 2009, 02:36
B is the best.

From the argument, if X then Y. Thus, if Y then it would have been caused by X. That may not be true all the time. Y could occur for some other causes too. B explains that.
SVP
Joined: 28 Dec 2005
Posts: 1559
Re: CR: To become an expert [#permalink]

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21 Jan 2009, 06:38
I'd go for B as well
VP
Joined: 05 Jul 2008
Posts: 1408
Re: CR: To become an expert [#permalink]

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21 Jan 2009, 10:08
Got a B as well.

Some one who is naturally gifted might not need to practice 3 hrs a day to become an expert.

scthakur explained the causation clearly
Director
Joined: 01 Aug 2008
Posts: 732
Re: CR: To become an expert [#permalink]

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21 Jan 2009, 11:13
B..
Manager
Joined: 20 Mar 2007
Posts: 59
Re: CR: To become an expert [#permalink]

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21 Jan 2009, 12:14
Option B . Talented folks can possibly reach the level of expertise with less than 3 hrs of practice.
Senior Manager
Joined: 02 Nov 2008
Posts: 277
Re: CR: To become an expert [#permalink]

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21 Jan 2009, 15:15
scthakur wrote:
B is the best.

From the argument, if X then Y. Thus, if Y then it would have been caused by X. That may not be true all the time. Y could occur for some other causes too. B explains that.

B it is (note: these types of questions are not common on the GMAT).
Director
Joined: 12 Oct 2008
Posts: 545
Re: CR: To become an expert [#permalink]

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21 Jan 2009, 15:59
OA B
VP
Joined: 18 May 2008
Posts: 1261
Re: CR: To become an expert [#permalink]

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23 Jan 2009, 04:20
It shld b B
Manager
Joined: 04 Jan 2009
Posts: 238
Re: CR: To become an expert [#permalink]

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23 Jan 2009, 18:43
scthakur wrote:
B is the best.

From the argument, if X then Y. Thus, if Y then it would have been caused by X. That may not be true all the time. Y could occur for some other causes too. B explains that.

Stem says that to become expert, people must practice; but does not say must practice for atleast 3 hrs.
Next stmt in the stem says that if ppl practice for 3 hrs, they will become expert. But does not include other factors. hence, 3 hrs practice may be suff but not necessary.
Hence, B.

would any one comment what level this question is? less than 600 or more than 600?
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tusharvk

Re: CR: To become an expert   [#permalink] 23 Jan 2009, 18:43
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