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To become an expert on a musical instrument, a person must practice. I

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To become an expert on a musical instrument, a person must practice. I  [#permalink]

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New post 02 Apr 2017, 07:27
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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.
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Re: To become an expert on a musical instrument, a person must practice. I  [#permalink]

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New post 25 Jun 2017, 14:03
Although i selected B which matches the OA , i am not clear about the logical flow to arrive at the correct option .Can the experts please pitch in ? Thank you !
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Re: To become an expert on a musical instrument, a person must practice. I  [#permalink]

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New post 05 Jul 2017, 21:20
rohitkabra1987 wrote:
Although i selected B which matches the OA , i am not clear about the logical flow to arrive at the correct option .Can the experts please pitch in ? Thank you !

The author's conclusion is that "if a person is an expert on a musical instrument, that person must have practiced for at least three hours each day." Let's examine the logical flow...

  • "To become an expert on a musical instrument, a person must practice." - This statement gives a necessary condition. If you want to become an expert on a musical instrument, you MUST practice.
  • "If people practice a musical instrument for three hours each day, they will eventually become experts on that instrument." - This statement gives us a sufficient condition. If you want to become an expert on a musical instrument, practicing for three hours a day WILL allow you to achieve that goal. However, this is not necessarily the ONLY way to achieve that goal. For example, you might just be a gifted musical genius who can play the piano at an expert level with very little practice!
  • Therefore, the conclusion is flawed. Although practicing for three hours a day is one way to become an expert, it is not necessarily the only way (it is sufficient but not necessary). Choice (B) describes this flaw in the reasoning.

I hope that helps!
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Re: To become an expert on a musical instrument, a person must practice. I   [#permalink] 05 Jul 2017, 21:20
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