As a result of the increasing volatility of oil prices, : GMAT Sentence Correction (SC)
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# As a result of the increasing volatility of oil prices,

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29 Oct 2015, 16:41
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Question Stats:

30% (01:56) correct 70% (00:48) wrong based on 255 sessions

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As a result of the increasing volatility of oil prices, a greater number of resources are being directed toward the commercial development of alternative energy sources, such as wind, solar power, and biofuels.

A) a greater number of

B )greater numbers of

C) more and more

D) a greater amount of

E) an increasing level of

[Reveal] Spoiler: OA

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29 Oct 2015, 16:48
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Full explanation : The original sentence is problematic in its use of “a greater number” as the subject, as this term is inappropriate to use in referring toresources, which here is used as an uncountable noun (i.e. saying “10 resources” would not be appropriate in this context). Also, “a greater number” is singular, which disagrees with the verb “are” in the non-underlined part of the sentence.
(A) This choice is incorrect as it repeats the original sentence.

(B) The term “numbers of” is always incorrect; the correct term is “number of.” However, “resources” here are uncountable, so “number of” would still be incorrect in this context.

(C) CORRECT. “More and more” can correctly be applied to the uncountable “resources.” This choice makes “resources” the subject, which agrees with the plural verb “are.” This choice also correctly indicates an increasing level of resources, consistent with the meaning of the sentence.

(D) “A greater amount of” is correct insofar as it matches the uncountable use of “resources” here. However, “A greater amount of” is a singular subject, which cannot be used with the plural verb “are” in the non-underlined portion of the sentence.

(E) “An increasing level” is a singular subject, which cannot be used with the plural verb “are.”

The first question : Why A great number is singular? I learnt that The number of S.t will go with singular verb and a number of S.t will go with phural verb? (EDITED)
The second question : Why “resources” here - uncountable ? I tot , for example, oil resource surely is uncontable, but when we add " s" to resource, it should be countable?
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Last edited by littlegirl on 29 Oct 2015, 18:25, edited 2 times in total.
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29 Oct 2015, 18:18
Quote:
The first question : Why A great number is singular? I learnt that The number of S.t will go with phural verb and a number of S.t will go with singular verb?

Nope. Learning seems to require a little revision .
A great number of / a number of - are always plural.

Why Plural ?
Because it indicates plurality. The same reason as "a lot of", "a great deal of" etc indicate plurality.

Examples from economist :
1. Unfortunately, a great number of investors crave .....
2. A great number of people are under his spell.
3. Why a great number of Italians would waste their time on Bersani .....

Quote:
The second question : Why “resources” here - uncountable ? I tot , for example, oil resource surely is uncontable, but when we add " s" to resource, it should be countable?

"resources" are countable and plural.
However if we say about specific resources like cotton, wool, fabric, leather, plastic, wood, stone, concrete, oil, gas, coal etc, then these particular resources will treat be as uncountable.
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Master with structure - Numerical comparison [source: economist.com] https://gmatclub.com/forum/master-with-structure-numerical-comparison-233657.html#p1801987

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29 Oct 2015, 18:24
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@musunna wrote:
Quote:
The first question : Why A great number is singular? I learnt that The number of S.t will go with phural verb and a number of S.t will go with singular verb?

Nope. Learning seems to require a little revision .
A great number of / a number of - are always plural.

Why Plural ?
Because it indicates plurality. The same reason as "a lot of", "a great deal of" etc indicate plurality.

Examples from economist :
1. Unfortunately, a great number of investors crave .....
2. A great number of people are under his spell.
3. Why a great number of Italians would waste their time on Bersani .....

Quote:
The second question : Why “resources” here - uncountable ? I tot , for example, oil resource surely is uncontable, but when we add " s" to resource, it should be countable?

"resources" are countable and plural.
However if we say about specific resources like cotton, wool, fabric, leather, plastic, wood, stone, concrete, oil, gas, coal etc, then these particular resources will treat be as uncountable.

Hi musunna,

I am sorry, I just edited my first question. I wrote it wrongly. I meaned as you said. However, my question is Official explanation is not the same I understand. Please read official explanation n since it is Official explanation of Manhantan; I always keep in mind that Manhantan almost gives correct explanation. So where is wrong?
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29 Oct 2015, 20:04
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MGMAT’s contention that the word resources refers to a mass, meaning quantity, is untenable. After all, it is not referring to any single resource. There are so many of these alternative resources such as nuclear, wind, solar, geothermal, ocean current, biofuels and hydrogen energy developments in which research is being directed these days. In addition, a great number of something is a plural as pointed out by musanna. I would reckon A seems is more logical than C

Secondly I do not understand the emphasis given to the second ‘more’ in the choice; after all, a single more is good enough in to convey the formal meaning. This is redundancy IMO.

This is my personal opinion, although it is no reflection on the perception of MGMAT, which I regard. However, littlegirl deserves a big kudo for her deep research.
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30 Oct 2015, 00:22
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Expert's post
As an official Manhattan Prep representative, I will agree that this problem and explanation are flawed. The problem is nearly a decade old and was pulled from our tests quite a few years ago.

While the fault here is ours, this points to a problem I see all the time here on gmatclub. Studying from random problems found in online forums and sets is not terribly effective, especially since many of the problems in circulation are problematic. In some cases, there's a minor typo that creates confusion, while in others (like this one), there are content problems that might actually cause you to learn the wrong things. All too often, I see problems that bear little resemblance to official problems and have serious grammar errors in the supposedly correct answers.

So, all apologies for the flawed question, but this is one more reason to study from official materials! As for our CATs, rest assured that this problem has been out of the question pool for ages. I'm very picky, and I don't think I've seen an explanation like this for any of our SC problems in the six years I've been with the company.
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30 Oct 2015, 00:37
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Dmitry

Your admission is indeed heroic. That is why, we love MGMAT. Please accept my humble kudo as a mark of that regard
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30 Oct 2015, 04:37
Hi DmitryFarber,
I apology for excavating a question which is no longer in the CAT pool. Actually it does not happen in my CAT Manhantan mocks but is from a source which my friend gave. I was thinking about that after posting this problem, but since I am not a native n not so good at SC GMAT so I just wana know where is wrong n if there is any wrong w my knowledge.
daagh : The same you. I love Manhantan too
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30 Oct 2015, 23:30
Thanks for the MPrep love, folks!

By the way, I should add that "more and more" is an accepted usage. It is used to show an increase over time (as opposed to a simple comparison). Here's one example:

more-and-more-in-recent-years-cities-are-stressing-the-arts-86568.html
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31 Oct 2015, 00:45
yes; I get it. Thanks for for the info
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31 Oct 2015, 11:42
just find a very good article on common confusion. Thanks Magoosh, it will indeed a good help

http://magoosh.com/gmat/2012/gmat-compa ... -vs-fewer/
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31 Oct 2015, 11:45
Resources , with question how many, shows countable, hence greater is wrong, C is straight come out leaving the
confusion.
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13 Nov 2016, 16:31
littlegirl wrote:
As a result of the increasing volatility of oil prices, a greater number of resources are being directed toward the commercial development of alternative energy sources, such as wind, solar power, and biofuels.

A) a greater number of

B )greater numbers of

C) more and more

D) a greater amount of

E) an increasing level of

I could easily eliminate all but B and C.

in the non-underlined portion, we have X of resources are being directed
A a greater number (singular) of resources are directed - out
D same mistake
E same mistake

between B and C
it's not the numbers that are being directed, but the resources themselves...C wins..
Re: As a result of the increasing volatility of oil prices,   [#permalink] 13 Nov 2016, 16:31
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