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Many of today’s mathematicians use computers to test cases that are ei

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Many of today’s mathematicians use computers to test cases that are ei  [#permalink]

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Many of today’s mathematicians use computers to test cases that are either too time-consuming or involve too many variables to test manually, allowing the exploration of theoretical issues that were impossible to test a generation ago

(A) are either too time-consuming or involve too many variables to test manually, allowing the exploration of

(B) either take too much time or involve too many variables to be tested manually; allowing the mathematicians to explore

(C) would either take too much time or involve too many variables to test manually, allowing them to explore

(D) would either be too time-consuming or would involve too many variables to test manually; this capability allows the mathematicians to explore

(E) take too much time or variables to test manually; this capability allows the mathematicians to explore

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Originally posted by djanand on 04 Feb 2014, 22:00.
Last edited by hazelnut on 24 Sep 2017, 00:15, edited 2 times in total.
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Re: Many of today’s mathematicians use computers to test cases that are ei  [#permalink]

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New post 05 Feb 2014, 00:45
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Many of today’s mathematicians use computers to test cases that are either too time-consuming or involve too many variables to test manually, allowing the exploration of theoretical issues that were impossible to test a generation ago

a) are either too time-consuming or involve too many variables to test manually, allowing the exploration of
Either ... or construction is a parallel marker. 'Or' is followed by a verb and hence, 'either' too should. Because the helping verb 'are' is used before either, this option is wrong.

At an advanced level, 'exploration of' usage is wrong too. Because, participle 'allowing' is modifying the entire clause and we don't know who is doing the 'exploration'. A preferred construction would be 'allowing X to explore ....'. Verb form is preferred over noun form.

b) either take too much time or involve too many variables to be tested manually; allowing the mathematicians to explore
The part of the sentence after the 'semicolon' is not a clause. Eliminate B.

c) would either take too much time or involve too many variables to test manually, allowing them to explore
Errors mentioned in A are corrected here.

d) would either be too time-consuming or would involve too many variables to test manually; this capability allows the mathematicians to explore
'or' is followed by 'would' and so should 'either' be.
Also, 'this' doesn't have a clear referent. Ask yourself, 'this capability' means 'which capability' ??

e) take too much time or variables to test manually; this capability allows the mathematicians to explore
'or' is the parallel marker - 'take too much' and 'variables to test' are not parallel. 'this' doesn't have a clear referent.
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Re: Many of today’s mathematicians use computers to test cases that are ei  [#permalink]

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New post 05 Feb 2014, 00:03
1
djanand wrote:
Many of today’s mathematicians use computers to test cases that are either too time-consuming or involve too many variables to test manually, allowing the exploration of theoretical issues that were impossible to test a generation ago

a) are either too time-consuming or involve too many variables to test manually, allowing the exploration of
b) either take too much time or involve too many variables to be tested manually; allowing the mathematicians to explore
c) would either take too much time or involve too many variables to test manually, allowing them to explore
d) would either be too time-consuming or would involve too many variables to test manually; this capability allows the mathematicians to explore
e) take too much time or variables to test manually; this capability allows the mathematicians to explore

Please provide your reasoning.

I don't find the latter part of this statement to be taken as an independent clause. Hence, I eliminated all the options with a semi-colon, leaving me with A and C.

"Would" suggests that something which is going to happen in future. Hence.

This reasoning could be flawed as well, as I am just a beginner.
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Re: Many of today’s mathematicians use computers to test cases that are ei  [#permalink]

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New post 05 Feb 2014, 04:23
7
sivasanjeev wrote:
Many of today’s mathematicians use computers to test cases that are either too time-consuming or involve too many variables to test manually, allowing the exploration of theoretical issues that were impossible to test a generation ago

c) would either take too much time or involve too many variables to test manually, allowing them to explore
Errors mentioned in A are corrected here.


Is the usage of pronoun "them" correct ? As per my understanding,keyword them can have two antecedents namely, today’s mathematicians and computers. Though today’s mathematicians is the subject of the sentence, how can we be sure that the pronoun them is referring to the subject and not to computers? Is it the case that the exploration work can be done by today’s mathematicians, hence the keyword them must refer to mathematicians (not to computers) ?
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Re: Many of today’s mathematicians use computers to test cases that are ei  [#permalink]

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New post 05 Feb 2014, 04:45
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Well, Pronoun ambiguity is not an absolute rule upon u can eliminate with confidence an answer choice. In the answer choice C, them logically refers to today's mathemiticans who are able to explore something not the computers. If another answer choice has not any grammatical error, conveys the meaning and clears the doubt about the prounoun ambiguity then it would win over C but in absence of that choice, you should go for C and move on.
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Re: Many of today’s mathematicians use computers to test cases that are ei  [#permalink]

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New post 22 Apr 2014, 02:09
3
Between C and E.

E. take too much time or variables to test manually; this capability allows the mathematicians to explore

Too much time or variables -- variables are countable noun thus we can not put it in parallel with much.
Too much time or Too much variables (Incorrect)

IMO: no other option is better than C.
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Re: Many of today’s mathematicians use computers to test cases that are ei  [#permalink]

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New post 30 Apr 2014, 05:51
Choice C correctly uses the either .... or ... construction and also allowing is correctly modifying the subject "mathematicians".
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Re: Many of today’s mathematicians use computers to test cases that are ei  [#permalink]

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New post 29 Jun 2014, 23:39
2
2
Many of today’s mathematicians use computers to test cases that are either too time-consuming or involve too many variables to test manually, allowing the exploration of theoretical issues that were impossible to test a generation ago

a) are either too time-consuming or involve too many variables to test manually, allowing the exploration of
There is a parallelism issue
Many of today’s mathematicians use computers to test cases are too time-consuming
Many of today’s mathematicians use computers to test cases are involve too many variables to test manually
We need to repeat "are" in both the lines and then you can see the issue - Incorrect



b) either take too much time or involve too many variables to be tested manually; allowing the mathematicians to explore
Allowing is a verbing modifier to join the two clauses and cannot be separated by a semi colon. Either side of Semi colon shouldn't dependent on each other "Structurally" bur should depend on meaning wise. - Incorrect

c) would either take too much time or involve too many variables to test manually, allowing them to explore
Perfect

d) would either be too time-consuming or would involve too many variables to test manually; this capability allows the mathematicians to explore - Extra would

e) take too much time or variables to test manually; this capability allows the mathematicians to explore - Doesn't make sense to me at all
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Re: Many of today’s mathematicians use computers to test cases that are ei  [#permalink]

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New post 07 Jul 2014, 15:57
Hi everybody, after practicing with the OG i would have eliminate the answer C.

c) would either take too much time or involve too many variables to test manually, allowing them to explore
it is not clear to who Them refers : the mathematicians? the computers? I saw a lot of justification like this one in the OG.
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Re: Many of today’s mathematicians use computers to test cases that are ei  [#permalink]

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New post 21 Jul 2014, 07:42
Not confident on c. The "to test manually" fragment is leading ambiguity on who will be testing manually. I found B to be more coherent. Can semi-colon be a deal breaker ?
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Re: Many of today’s mathematicians use computers to test cases that are ei  [#permalink]

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New post 21 Jul 2014, 09:31
himanshujovi wrote:
Not confident on c. The "to test manually" fragment is leading ambiguity on who will be testing manually. I found B to be more coherent. Can semi-colon be a deal breaker ?


Off-course, semicolon is a deal breaker.

b) either take too much time or involve too many variables to be tested manually; allowing the mathematicians to explore

You can not separate modifier from what it is trying to modify using a semicolon.

In C, allowing them to ... is fine. (It'a mgmat SC, a reliable source)

interpretation of modifier : cases allowing mathematicians to test manually...

Other options have fatal errors.
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Re: Many of today’s mathematicians use computers to test cases that are ei  [#permalink]

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New post 05 Aug 2014, 07:47
kinjiGC wrote:
Many of today’s mathematicians use computers to test cases that are either too time-consuming or involve too many variables to test manually, allowing the exploration of theoretical issues that were impossible to test a generation ago

a) are either too time-consuming or involve too many variables to test manually, allowing the exploration of
There is a parallelism issue
Many of today’s mathematicians use computers to test cases are too time-consuming
Many of today’s mathematicians use computers to test cases are involve too many variables to test manually
We need to repeat "are" in both the lines and then you can see the issue - Incorrect



b) either take too much time or involve too many variables to be tested manually; allowing the mathematicians to explore
Allowing is a verbing modifier to join the two clauses and cannot be separated by a semi colon. Either side of Semi colon shouldn't dependent on each other "Structurally" bur should depend on meaning wise. - Incorrect

c) would either take too much time or involve too many variables to test manually, allowing them to explore
Perfect

d) would either be too time-consuming or would involve too many variables to test manually; this capability allows the mathematicians to explore - Extra would

e) take too much time or variables to test manually; this capability allows the mathematicians to explore - Doesn't make sense to me at all


In option A if involve was replaced with involving , would the option be correct?
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Re: Many of today’s mathematicians use computers to test cases that are ei  [#permalink]

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New post 05 Aug 2014, 07:49
sivasanjeev wrote:
Many of today’s mathematicians use computers to test cases that are either too time-consuming or involve too many variables to test manually, allowing the exploration of theoretical issues that were impossible to test a generation ago

a) are either too time-consuming or involve too many variables to test manually, allowing the exploration of
Either ... or construction is a parallel marker. 'Or' is followed by a verb and hence, 'either' too should. Because the helping verb 'are' is used before either, this option is wrong.

At an advanced level, 'exploration of' usage is wrong too. Because, participle 'allowing' is modifying the entire clause and we don't know who is doing the 'exploration'. A preferred construction would be 'allowing X to explore ....'. Verb form is preferred over noun form.

b) either take too much time or involve too many variables to be tested manually; allowing the mathematicians to explore
The part of the sentence after the 'semicolon' is not a clause. Eliminate B.

c) would either take too much time or involve too many variables to test manually, allowing them to explore
Errors mentioned in A are corrected here.

d) would either be too time-consuming or would involve too many variables to test manually; this capability allows the mathematicians to explore
'or' is followed by 'would' and so should 'either' be.
Also, 'this' doesn't have a clear referent. Ask yourself, 'this capability' means 'which capability' ??

e) take too much time or variables to test manually; this capability allows the mathematicians to explore
'or' is the parallel marker - 'take too much' and 'variables to test' are not parallel. 'this' doesn't have a clear referent.



For option A you have mentioned in your explanation : verb form is preferred over noun form. I've come across this rule but never grasped or understood properly. Could you please explain this concept using simple examples? :)
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Re: Many of today’s mathematicians use computers to test cases that are ei  [#permalink]

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New post 09 Sep 2014, 18:05
Can someone shed light on the usage of "would" in the correct answer choice C ? Please help
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Re: Many of today’s mathematicians use computers to test cases that are ei  [#permalink]

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New post 19 Aug 2015, 13:46
Many of today’s mathematicians use computers to test cases that are

either too time-consuming
or involve too many variables to test manually,

allowing the exploration of
theoretical issues that were impossible to test a generation ago

a) are either too time-consuming or involve too many variables to test manually, allowing the exploration of
b) either take too much time or involve too many variables to be tested manually; allowing the mathematicians to explore
c) would either take too much time or involve too many variables to test manually, allowing them to explore
d)would either be too time-consuming or would involve too many variables to test manually; this capability allows the mathematicians to explore
e) take too much time or variables to test manually; this capability allows the mathematicians to explore
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Re: Many of today’s mathematicians use computers to test cases that are ei  [#permalink]

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New post 24 Sep 2015, 01:36
djanand wrote:
Many of today’s mathematicians use computers to test cases that are either too time-consuming or involve too many variables to test manually, allowing the exploration of theoretical issues that were impossible to test a generation ago

a) are either too time-consuming or involve too many variables to test manually, allowing the exploration of
b) either take too much time or involve too many variables to be tested manually; allowing the mathematicians to explore
c) would either take too much time or involve too many variables to test manually, allowing them to explore
d) would either be too time-consuming or would involve too many variables to test manually; this capability allows the mathematicians to explore
e) take too much time or variables to test manually; this capability allows the mathematicians to explore

Please provide your reasoning.


The pronoun "them" without a clear noun in option C is a deal breaker according to most OG solutions. I am not sure just because nothing else is better, this would be the correct answer. If you do too many actual GMAC problems, you'll eliminate this and move on. And then GMAT format won't allow too much time to come back and reassess already eliminated options. IMHO - bad question.
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Re: Many of today’s mathematicians use computers to test cases that are ei  [#permalink]

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New post 19 Mar 2016, 07:52
I have a question.

1) Which noun is the subject of the action 'allow'? cases or mathematicians?

Both of them don't make sense in my opinion. It should be the computers.

And the modifier will be like this

"the computers allow today's mathematicians to explore theoretical issues that were impossible to test a generation ago."

Am I right?
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Re: Many of today’s mathematicians use computers to test cases that are ei  [#permalink]

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New post 19 Mar 2016, 09:33
Aves wrote:
I have a question.

1) Which noun is the subject of the action 'allow'? cases or mathematicians?

Both of them don't make sense in my opinion. It should be the computers.

And the modifier will be like this

"the computers allow today's mathematicians to explore theoretical issues that were impossible to test a generation ago."

Am I right?


Hi,

allowing is the VERB +ING modifier and does not modify ant particlar NOUN.
It modifies the preceding clause..


here it is talking of the result of previous clause --Many of today’s mathematicians use computers to test cases

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Re: Many of today’s mathematicians use computers to test cases that are ei  [#permalink]

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New post 19 Mar 2016, 09:38
1
chetan2u wrote:
Aves wrote:
I have a question.

1) Which noun is the subject of the action 'allow'? cases or mathematicians?

Both of them don't make sense in my opinion. It should be the computers.

And the modifier will be like this

"the computers allow today's mathematicians to explore theoretical issues that were impossible to test a generation ago."

Am I right?


Hi,

allowing is the VERB +ING modifier and does not modify ant particlar NOUN.
It modifies the preceding clause..


here it is talking of the result of previous clause --Many of today’s mathematicians use computers to test cases


Hi chetan2u,

I know that V-ing modifier modifies the preceding clause as a whole but it should make sense with the subject of the preceding clause as well, shoudn't it?
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Re: Many of today’s mathematicians use computers to test cases that are ei  [#permalink]

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New post 20 Mar 2016, 22:28
kinjiGC wrote:
Many of today’s mathematicians use computers to test cases that are either too time-consuming or involve too many variables to test manually, allowing the exploration of theoretical issues that were impossible to test a generation ago

a) are either too time-consuming or involve too many variables to test manually, allowing the exploration of
There is a parallelism issue
Many of today’s mathematicians use computers to test cases are too time-consuming
Many of today’s mathematicians use computers to test cases are involve too many variables to test manually
We need to repeat "are" in both the lines and then you can see the issue - Incorrect



b) either take too much time or involve too many variables to be tested manually; allowing the mathematicians to explore
Allowing is a verbing modifier to join the two clauses and cannot be separated by a semi colon. Either side of Semi colon shouldn't dependent on each other "Structurally" bur should depend on meaning wise. - Incorrect

c) would either take too much time or involve too many variables to test manually, allowing them to explore
Perfect

d) would either be too time-consuming or would involve too many variables to test manually; this capability allows the mathematicians to explore - Extra would

e) take too much time or variables to test manually; this capability allows the mathematicians to explore - Doesn't make sense to me at all



HI GMATify,

I opted for correct option C but I would like to discuss the usage of "WOULD".
I eliminated other options and in the end left with option C.

But other approach would have been we directly eliminate options A,B and E as "Would" is not used.
I hope in this sentence condition is required so "Would" is required...Please correct me if I am wrong.
Can we do this.. :?:

Please assist.
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Re: Many of today’s mathematicians use computers to test cases that are ei &nbs [#permalink] 20 Mar 2016, 22:28

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