Find all School-related info fast with the new School-Specific MBA Forum

It is currently 23 Oct 2014, 09:53

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

PARALLELISM: GRAMMAR VS LOGIC

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Expert Post
2 KUDOS received
e-GMAT Representative
User avatar
Joined: 02 Nov 2011
Posts: 1794
Followers: 1299

Kudos [?]: 3674 [2] , given: 185

Re: PARALLELISM: GRAMMAR VS LOGIC [#permalink] New post 26 Nov 2012, 09:59
2
This post received
KUDOS
Expert's post
Hi debayan,

In this construction, we have ellipses at play. Take a look at the sentence with correct answer choice B:

As the etched lines on computer memory chips have become thinner and the chips’ circuits (have become) more complex, the power of both the chips and the electronic devices they drive has vastly increased.

Because the verb “have become” already appears once in the sentence, it has been kept understood for the second part. With this verb in place, now we have clear clauses.

Hope this helps. :)
Thanks.
Shraddha
_________________

https://www.youtube.com/watch?v=WeT9_Wr0DlI&feature=youtu.be

Expert Post
BSchool Forum Moderator
avatar
Joined: 27 Aug 2012
Posts: 1117
Followers: 87

Kudos [?]: 565 [0], given: 107

Premium Member CAT Tests
Re: PARALLELISM: GRAMMAR VS LOGIC [#permalink] New post 26 Nov 2012, 10:27
Expert's post
egmat wrote:
Hi debayan,

In this construction, we have ellipses at play. Take a look at the sentence with correct answer choice B:

As the etched lines on computer memory chips have become thinner and the chips’ circuits (have become) more complex, the power of both the chips and the electronic devices they drive has vastly increased.

Because the verb “have become” already appears once in the sentence, it has been kept understood for the second part. With this verb in place, now we have clear clauses.

Hope this helps. :)
Thanks.
Shraddha



Hi Shradhha,
Thanks for the clarification... :)

Few quick qs on it :
1. Is it 650+ or 700+ level qs..?
2.How often we may expect this kind of qs.(where the verb in a clause is kept understood) in GMAT..?
3.How we can tackle or gauge this kind of qs..?

Had there been ONLY the 2nd part (i.e. "the chips’ circuits more complex") of the clause starting with 'As', I think we would have required the conjugated verb for sure... Please correct me if I'm wrong.

Really appreciate your feedback.
_________________

UPDATED : e-GMAT SC Resources-Consolidated || ALL RC Resources-Consolidated || ALL SC Resources-Consolidated || UPDATED : AWA compilations-109 Analysis of Argument Essays || NEW !!! GMAC's IR Prep Tool

GMAT Club guide - OG 11-12-13 || Veritas Blog || Manhattan GMAT Blog


KUDOS please, if you like the post or if it helps :-)

Expert Post
BSchool Forum Moderator
avatar
Joined: 27 Aug 2012
Posts: 1117
Followers: 87

Kudos [?]: 565 [0], given: 107

Premium Member CAT Tests
Re: PARALLELISM: GRAMMAR VS LOGIC [#permalink] New post 27 Nov 2012, 19:30
Expert's post
debayan222 wrote:
egmat wrote:
Hi debayan,

In this construction, we have ellipses at play. Take a look at the sentence with correct answer choice B:

As the etched lines on computer memory chips have become thinner and the chips’ circuits (have become) more complex, the power of both the chips and the electronic devices they drive has vastly increased.

Because the verb “have become” already appears once in the sentence, it has been kept understood for the second part. With this verb in place, now we have clear clauses.

Hope this helps. :)
Thanks.
Shraddha



Hi Shradhha,
Thanks for the clarification... :)

Few quick qs on it :
1. Is it 650+ or 700+ level qs..?
2.How often we may expect this kind of qs.(where the verb in a clause is kept understood) in GMAT..?
3.How we can tackle or gauge this kind of qs..?

Had there been ONLY the 2nd part (i.e. "the chips’ circuits more complex") of the clause starting with 'As', I think we would have required the conjugated verb for sure... Please correct me if I'm wrong.

Really appreciate your feedback.


Hi Shradhha/Rajat,

Any feedback on this..?
_________________

UPDATED : e-GMAT SC Resources-Consolidated || ALL RC Resources-Consolidated || ALL SC Resources-Consolidated || UPDATED : AWA compilations-109 Analysis of Argument Essays || NEW !!! GMAC's IR Prep Tool

GMAT Club guide - OG 11-12-13 || Veritas Blog || Manhattan GMAT Blog


KUDOS please, if you like the post or if it helps :-)

Manager
Manager
avatar
Joined: 03 Jun 2012
Posts: 58
Followers: 0

Kudos [?]: 15 [0], given: 5

Re: PARALLELISM: GRAMMAR VS LOGIC [#permalink] New post 13 Dec 2012, 08:32
Thanks e-gmat for such an outstanding post. Hope you will continue with your good work of posting such helpful articles!
Expert Post
e-GMAT Representative
User avatar
Joined: 02 Nov 2011
Posts: 1794
Followers: 1299

Kudos [?]: 3674 [0], given: 185

Re: PARALLELISM: GRAMMAR VS LOGIC [#permalink] New post 13 Dec 2012, 12:42
Expert's post
debayan222 wrote:
debayan222 wrote:
egmat wrote:
Hi debayan,

In this construction, we have ellipses at play. Take a look at the sentence with correct answer choice B:

As the etched lines on computer memory chips have become thinner and the chips’ circuits (have become) more complex, the power of both the chips and the electronic devices they drive has vastly increased.

Because the verb “have become” already appears once in the sentence, it has been kept understood for the second part. With this verb in place, now we have clear clauses.

Hope this helps. :)
Thanks.
Shraddha



Hi Shradhha,
Thanks for the clarification... :)

Few quick qs on it :
1. Is it 650+ or 700+ level qs..?
2.How often we may expect this kind of qs.(where the verb in a clause is kept understood) in GMAT..?
3.How we can tackle or gauge this kind of qs..?

Had there been ONLY the 2nd part (i.e. "the chips’ circuits more complex") of the clause starting with 'As', I think we would have required the conjugated verb for sure... Please correct me if I'm wrong.

Really appreciate your feedback.


Hi Shradhha/Rajat,

Any feedback on this..?


Hi debayan,
1. This one is easily a 700 level question.
2. Now ellipsis is quite common in GMAT. Ellipsis can apply to any entity in the sentence, not necessarily only verbs. In comparison sentences, we do witness the understood verbs among other kinds of sentences.
3. You really need to understand the meaning and the context of the sentence to be able to handle such sentences. Make sure that the sentence makes logical sense.

Yes, if the sentence were to have only the second part beginning with “AS”, then we would need a verb for the subject. Only those words are made understood in the sentence that have already appeared somewhere in the sentence. Hence, we could keep “have become” understood in the official sentence as it already appears in the sentence.

Hope this helps. :)
Thanks.
Shraddha
_________________

https://www.youtube.com/watch?v=WeT9_Wr0DlI&feature=youtu.be

Expert Post
BSchool Forum Moderator
avatar
Joined: 27 Aug 2012
Posts: 1117
Followers: 87

Kudos [?]: 565 [0], given: 107

Premium Member CAT Tests
Re: PARALLELISM: GRAMMAR VS LOGIC [#permalink] New post 15 Dec 2012, 05:33
Expert's post
Thanks Shradhha for your reply... :)

Would you please throw some more of these type questions to the community...It'll be indeed very helpful.
_________________

UPDATED : e-GMAT SC Resources-Consolidated || ALL RC Resources-Consolidated || ALL SC Resources-Consolidated || UPDATED : AWA compilations-109 Analysis of Argument Essays || NEW !!! GMAC's IR Prep Tool

GMAT Club guide - OG 11-12-13 || Veritas Blog || Manhattan GMAT Blog


KUDOS please, if you like the post or if it helps :-)

Senior Manager
Senior Manager
avatar
Joined: 07 Sep 2010
Posts: 340
Followers: 3

Kudos [?]: 156 [0], given: 136

Re: PARALLELISM: GRAMMAR VS LOGIC [#permalink] New post 18 Mar 2013, 08:48
egmat wrote:

ERROR ANALYSIS:

• From the meaning analysis, we can logically say that the two changes in the memory chips have resulted in increase in the power of the chips. But it is not logical to say that these changes have led to increase in the devices they drive. Increase in the number of devices these chips drive depend on many other factors. Hence, despite being GRAMMATICALLY correct, this choice stands LOGICALLY incorrect.

Thanks.

Hi e-gmat,

I basically get stuck in questions where we can infer two possible meanings and this is a classic example of the such scenario. Request you to please clarify my doubt-

Reasoning 1 - As you written above.

Reasoning 2- It could have been possible that the change in the design could have resulted in the increase of electronic devices. I mean, it could have been possible that earlier microchips are able to pass only 50mA current, but due to new design changes they are able to pass 1000 mA current, and because of this new invention, market is flooded with new electronic devices.
Whats wrong in it. How do you make sure which is the intended meaning.

Please clarify.
Thanks
_________________

+1 Kudos me, Help me unlocking GMAT Club Tests

1 KUDOS received
Manager
Manager
avatar
Joined: 30 Mar 2013
Posts: 70
Concentration: General Management, Strategy
Followers: 0

Kudos [?]: 14 [1] , given: 14

Re: PARALLELISM: GRAMMAR VS LOGIC [#permalink] New post 19 Jul 2013, 23:02
1
This post received
KUDOS
Hello Shraddha,

I have one query pertaining to first question--

Question 1

Since digital recording offers essentially perfect reproduction - on compact discs, digital audiotapes, or digital videodiscs - audiophiles can accumulate music, transferring them from one format to another, copying it, and digitally altering it with little effort and not damaging the sound quality. (GMAT Prep)

A. music, transferring them from one format to another, copying it, and digitally altering it with little effort and not damaging
B. music, transferring it from one format to another, copying it, and digitally altering it with little effort and no damage to
C. music, transfer it from one format to another, copy it, and digitally alter it with little effort and no damage to
D. music and transfer it from one format to another, copy it, and then digitally altering it with little effort and not damaging
E. music and transfer it from one format to another, copying it, and digitally alter it with little effort and no damage to

I face challenge sometimes in figuring out the list which will be parallel , for instance here, if i don't know what audiophiles are exactly, but from the sentence cant i decipher that -- audiophiles is something which - can accumulate music, transfer from one format to another, copy it, and digitally alter it...
Can you please help me to understand to make out the correct list pertaining to parallelism


Regards,
Veenu
Expert Post
1 KUDOS received
e-GMAT Representative
User avatar
Joined: 02 Nov 2011
Posts: 1794
Followers: 1299

Kudos [?]: 3674 [1] , given: 185

Re: PARALLELISM: GRAMMAR VS LOGIC [#permalink] New post 22 Jul 2013, 06:11
1
This post received
KUDOS
Expert's post
veenu08 wrote:
Hello Shraddha,

I have one query pertaining to first question--

Question 1

Since digital recording offers essentially perfect reproduction - on compact discs, digital audiotapes, or digital videodiscs - audiophiles can accumulate music, transferring them from one format to another, copying it, and digitally altering it with little effort and not damaging the sound quality. (GMAT Prep)

A. music, transferring them from one format to another, copying it, and digitally altering it with little effort and not damaging
B. music, transferring it from one format to another, copying it, and digitally altering it with little effort and no damage to
C. music, transfer it from one format to another, copy it, and digitally alter it with little effort and no damage to
D. music and transfer it from one format to another, copy it, and then digitally altering it with little effort and not damaging
E. music and transfer it from one format to another, copying it, and digitally alter it with little effort and no damage to

I face challenge sometimes in figuring out the list which will be parallel , for instance here, if i don't know what audiophiles are exactly, but from the sentence cant i decipher that -- audiophiles is something which - can accumulate music, transfer from one format to another, copy it, and digitally alter it...
Can you please help me to understand to make out the correct list pertaining to parallelism


Regards,
Veenu


Hi Veenu,

Since digital recording offers essentially perfect reproduction - on compact discs, digital audiotapes, or digital videodiscs - audiophiles can accumulate music, transferring them from one format to another, copying it, and digitally altering it with little effort and not damaging the sound quality.

It is very important to understand the meaning of the sentence. The logic of the sentence guides us to find the intended list in the sentence.
Another thing to remember is that GMAT does not test us on our knowledge of outside world. I bring up this point because you mentioned that you don’t know the meaning of audiophiles. I’m sure many of us do not. And GMAT does not even want to test on that.

But by reading the sentence, as you correctly mention, we can understand what it means. The sentence talks about digital recording of music. Then it talks about audiophiles. So we can understand that audiophiles is one of the ways of digitally recording music. And how does it function? It records music by transferring music from one format to another, copying it, and digitally altering it with little effort and not damaging the sound quality. This takes care of our meaning analysis.

Now let’s look into the errors of this sentence (Error Analysis):
We certainly know that there is a list in this sentence. So let’s first identify the parallel marker here, the word that joins the entities in the list. Here we see two markers – “and”. Now all the entities are written in verb-ing form:
• transferring them from one format to another,
• copying it, and
• digitally altering it with little effort and
• not damaging the sound quality

Since there are two “and” here, we need to figure out the correct list. If suppose all the entities in the list are part of the same list, then there should be only one “and” in the correct answer choice. Another possibility is that only first three entities form the list. There is another list in this list that consists “with little effort” and “not damaging the sound quality”. We can clearly see that these two entities are not parallel.
So the correct answer choices will have either all the four entities parallel to each other or two lists – the main list with first three verb-ing modifier entities and the second nested list that is not parallel.

Another error in this sentence is singular noun “music” has plural pronoun “them”

So you see how the original sentence guides us to find out the intended meaning and the intended logical list in the sentence.
On the basis of this analysis, solve the problem and see if you can arrive at the correct answer.

Looking forward to your analysis. :)
Thanks.
Shraddha
_________________

https://www.youtube.com/watch?v=WeT9_Wr0DlI&feature=youtu.be

Director
Director
avatar
Joined: 29 Nov 2012
Posts: 929
Followers: 12

Kudos [?]: 312 [0], given: 543

Re: PARALLELISM: GRAMMAR VS LOGIC [#permalink] New post 10 Sep 2013, 05:26
As the etched lines on computer memory chips have become thinner and the chips’ circuits more complex, both the power of the chips and the electronic devices they drive have vastly increased. (GMAT Prep)

A. the chips’ circuits more complex, both the power of the chips and the electronic devices they drive have
B. the chips’ circuits more complex, the power of both the chips and the electronic devices they drive has
C. the chips’ circuits are more complex, both the power of the chips and the electronic devices they drive has
D. their circuits are more complex, the power of both the chips and the electronic devices they drive have
E. their circuits more complex, both the power of the chips and the electronic devices they drive have

As the etched lines on computer memory chips have become thinner and the chips’ circuits ( Have become is implied here) more complex ---> This is a DC

both the power of the chips and the electronic devices they drive have vastly increased. ---> This is an IC

DC, IC ( structure) so the IC must start with the subject in this case both doesn't make sense...

You can eliminate 3 choices right of the bat cos of meaning / structure.. A, C and E
_________________

Click +1 Kudos if my post helped...

Amazing Free video explanation for all Quant questions from OG 13 and much more http://www.gmatquantum.com/og13th/

GMAT Prep software What if scenarios gmat-prep-software-analysis-and-what-if-scenarios-146146.html

Intern
Intern
User avatar
Joined: 16 Apr 2013
Posts: 14
Followers: 0

Kudos [?]: 0 [0], given: 1

GMAT ToolKit User CAT Tests
Re: PARALLELISM: GRAMMAR VS LOGIC [#permalink] New post 30 Sep 2013, 16:58
As the etched lines on computer memory chips have become thinner and the chips’ circuits more complex, both the power of the chips and the electronic devices they drive have vastly increased. (GMAT Prep)

A. the chips’ circuits more complex, both the power of the chips and the electronic devices they drive have
B. the chips’ circuits more complex, the power of both the chips and the electronic devices they drive has
C. the chips’ circuits are more complex, both the power of the chips and the electronic devices they drive has
D. their circuits are more complex, the power of both the chips and the electronic devices they drive have
E. their circuits more complex, both the power of the chips and the electronic devices they drive have

MEANING ANAYSIS:

• The etched lines on computer memory chips have become thinner, and the chips’ circuits have become more complex. These have resulted into two things:
1. the power of the chips have increased, and
2. the electronic devices they derive have increased. Because its a better chip...therefore more devices are sold?!

ERROR ANALYSIS:

• From the meaning analysis, we can logically say that the two changes in the memory chips have resulted in increase in the power of the chips. But it is not logical to say that these changes have led to increase in the devices they drive. Increase in the number of devices these chips drive depend on many other factors. Hence, despite being GRAMMATICALLY correct, this choice stands LOGICALLY incorrect.

Hi All -

1) I dont understand the logical breakdown in the meaning analysis for #2 that I highlighted in the error analysis. I was between A and B for this question. The chips are thinner and more complex...therefore their power and the number of devices they power have increased -->This makes sense to me because a better chip is a logical selling point more devices to be sold.

2) 'have' in choice A matches with the plural subject of power AND devices. I understand how 'has' makes sense with choice B since the power is singular subject.

3) Is my SV breakdown correct?
- As the etched lines on computer memory chips have become thinner and the chips’ circuits ( V = have become, ellipses is used) more complex, both the power of the chips and the electronic devices they drive have vastly increased

4) Perthe meaning analysis provided: two things have happened to the chip and two different things resulted. Is there some sort of meaning parallelism? Or am I looking too far into this?


Can you help clarify...


Thanks,
Al

Last edited by lbnyc13 on 12 Oct 2013, 10:34, edited 2 times in total.
Intern
Intern
avatar
Joined: 08 Jul 2013
Posts: 1
Followers: 0

Kudos [?]: 0 [0], given: 0

Re: PARALLELISM: GRAMMAR VS LOGIC [#permalink] New post 05 Oct 2013, 22:52
egmat wrote:
Hi All,

First of all, I would like thank all of you for appreciating this article and showering Kudos. Such overwhelming responses keep us motivated to write more articles. :)

Here is the detailed explanation for both the exercise questions.

EXERCISE QUESTION: 1


Since digital recording offers essentially perfect reproduction - on compact discs, digital audiotapes, or digital videodiscs - audiophiles can accumulate music, transferring them from one format to another, copying it, and digitally altering it with little effort and not damaging the sound quality. (GMAT Prep)

A. music, transferring them from one format to another, copying it, and digitally altering it with little effort and not damaging
B. music, transferring it from one format to another, copying it, and digitally altering it with little effort and no damage to
C. music, transfer it from one format to another, copy it, and digitally alter it with little effort and no damage to
D. music and transfer it from one format to another, copy it, and then digitally altering it with little effort and not damaging
E. music and transfer it from one format to another, copying it, and digitally alter it with little effort and no damage to

MEANING ANAYSIS:

Let us first understand the meaning of the sentence. This step is extremely necessary to understand what the LOGICAL intended meaning of the sentence is.

The sentence says that because digital recording offers perfect reproduction, audiophiles can collect music by doing three things:
a. transferring them from one format to another,
b. copying it, and
c. digitally altering it with little effort and not damaging the sound quality.

ERROR ANALYSIS:

• There is a list of three things through which audiophiles can accumulate music. All three are the part of the process that completes the process of accumulation of music in audiophiles. All the entities are correctly written in verb-ing modifier form, meaning they all provide information as to how the music is accumulated in audiophiles.
• There is another list in the third entity of the first list – altering it with:
a. little effort, and
b. not damaging the sound quality.

The first entity of this sub-list is a noun phrase made up of adjective + noun. The second entity is also a noun phrase. However, the grammatical structure of this entity is different from the other. Here we have an adverb (not) followed by a gerund – a noun that denotes action. This entity can very well be written in the form of the first entity as “no damage”.
• Plural pronoun “them” does not agree in number with its singular antecedent “music”.

PoE:

A. music, transferring them from one format to another, copying it, and digitally altering it with little effort and not damaging: Incorrect for the reasons mentioned above.

B. music, transferring it from one format to another, copying it, and digitally altering it with little effort and no damage to: Correct. This choice not only maintains the grammatical parallelism of both the main list and the sub list but also maintains the logical parallelism, conveying the logical meaning.

C. music, transfer it from one format to another, copy it, and digitally alter it with little effort and no damage to: Incorrect. Grammatically, this choice is correct. The list per this choice is - audiophiles can:
a. accumulate music,
b. transfer it…
c. copy it, and
d. alter it…
Grammatically, all the entities are parallel here, but now they convey a very different meaning. The last three entities in the list are no more the three steps of accumulating music in audiophiles. All these entities are independent entities now. This choice clearly stands INCORRECT despite being grammatically parallel because it violates the LOGICAL intended meaning of the sentence.

D. music and transfer it from one format to another, copy it, and then digitally altering it with little effort and not damaging: Incorrect.
1. Use of “and” after music is incorrect.
2. “not damaging” is not parallel to “little effort”.

E. music and transfer it from one format to another, copying it, and digitally alter it with little effort and no damage to: Incorrect. Use of “and” after music is incorrect as it creates an unintended list which is not even parallel.

EXERCISE QUESTION: 2


As the etched lines on computer memory chips have become thinner and the chips’ circuits more complex, both the power of the chips and the electronic devices they drive have vastly increased. (GMAT Prep)

A. the chips’ circuits more complex, both the power of the chips and the electronic devices they drive have
B. the chips’ circuits more complex, the power of both the chips and the electronic devices they drive has
C. the chips’ circuits are more complex, both the power of the chips and the electronic devices they drive has
D. their circuits are more complex, the power of both the chips and the electronic devices they drive have
E. their circuits more complex, both the power of the chips and the electronic devices they drive have

MEANING ANAYSIS:

• The etched lines on computer memory chips have become thinner, and the chips’ circuits have become more complex. These have resulted into two things:
1. the power of the chips have increased, and
2. the electronic devices they derive have increased.

ERROR ANALYSIS:

• From the meaning analysis, we can logically say that the two changes in the memory chips have resulted in increase in the power of the chips. But it is not logical to say that these changes have led to increase in the devices they drive. Increase in the number of devices these chips drive depend on many other factors. Hence, despite being GRAMMATICALLY correct, this choice stands LOGICALLY incorrect.

PoE:

A. the chips’ circuits more complex, both the power of the chips and the electronic devices they drive have: Incorrect for the reason stated above.

B. the chips’ circuits more complex, the power of both the chips and the electronic devices they drive has: Correct. This choice is grammatically as well as logically correct. The changes in the memory chips have resulted in increase in power of the chips as well as the devices they drive.


C. the chips’ circuits are more complex, both the power of the chips and the electronic devices they drive has: Incorrect.
1. Use of “are” is incorrect. The effect of the changes can still be felt in the present.
2. Repeats the logical parallelism error as in choice A.
3. Singular “has” does not agree in number with its plural subject.

D. their circuits are more complex, the power of both the chips and the electronic devices they drive have: Incorrect.
1. Same verb tense error as in choice C.
2. Plural verb “have” does not agree in number with its singular subject “the power”.

E. their circuits more complex, both the power of the chips and the electronic devices they drive have: Incorrect. Same logical parallelism error as in choice A.

Thanks.


The etched lines on computer memory chips have become thinner, and the chips’ circuits have become more complex


Can you explain how "have become" in the second clause can be omitted in the original sentence? I didn't choose B because i thought it was grammatically wrong.

Thanks.
Expert Post
e-GMAT Representative
User avatar
Joined: 02 Nov 2011
Posts: 1794
Followers: 1299

Kudos [?]: 3674 [0], given: 185

Re: PARALLELISM: GRAMMAR VS LOGIC [#permalink] New post 14 Oct 2013, 06:52
Expert's post
Hi Alexander (EasyAL43),

Let's look at the original sentence once again:

As the etched lines on computer memory chips have become thinner and the chips’ circuits more complex, both the power of the chips and the electronic devices they drive have vastly increased.

1) Let's concentrate in the colored part of the sentence. It says that the two things have VASTLY INCREASED:

a. power of the chips - Power of the chips have vastly increased.
b. the electronic devices - The electronic devices have vastly increased.

Now, the first option makes complete sense. But can we say about the second one when we write it in a complete sentence? What does it mean to say that the electronic devices have vastly increased? I know in my meaning analysis, I related this increase to sales. But that is not mentioned in the sentence. So just going by what is written in the sentence, this option becomes all the more meaningless. This is the reason why Choice B makes for a Logical Parallelism.

2) Yes, plural "have" makes sense with plural subjects "the power of the chips" and "the electronic device". So, grammatically we don't see any trouble in this sentence.

3) Your analysis is absolutely correct.

4) Yes, this sentence is one of those that tests you on logical parallelism.

Hope this helps.
Thanks. :-)
Shraddha
_________________

https://www.youtube.com/watch?v=WeT9_Wr0DlI&feature=youtu.be

Expert Post
e-GMAT Representative
User avatar
Joined: 02 Nov 2011
Posts: 1794
Followers: 1299

Kudos [?]: 3674 [0], given: 185

Re: PARALLELISM: GRAMMAR VS LOGIC [#permalink] New post 14 Oct 2013, 07:25
Expert's post
ntppsrtek wrote:

The etched lines on computer memory chips have become thinner, and the chips’ circuits have become more complex


Can you explain how "have become" in the second clause can be omitted in the original sentence? I didn't choose B because i thought it was grammatically wrong.

Thanks.


Hi there,

As I have already mentioned in my previous post, plural verb "have increased" in Choice A do agree in number with plural subjects "power of the chips" and "the electronic devices". Grammatically, there is no issue with this choice. However, the meaning of Choice A is not logical. This error has been rectified in Choice B.

Choice B: the chips’ circuits more complex, the power of both the chips and the electronic devices they drive has

This choice is grammatically as well as logically correct. Singular verb "ahs" is correct because it agrees in number with singular subject "the power". Note that "of the chips and electronic devices" lies in prepositional phrase and hence cannot be the part of the subject.

Hope this helps. :-)
Thanks.
Shraddha
_________________

https://www.youtube.com/watch?v=WeT9_Wr0DlI&feature=youtu.be

Manager
Manager
User avatar
Joined: 24 Mar 2010
Posts: 122
Followers: 2

Kudos [?]: 45 [0], given: 104

GMAT ToolKit User
Re: PARALLELISM: GRAMMAR VS LOGIC [#permalink] New post 22 Oct 2013, 23:53
egmat wrote:

As the etched lines on computer memory chips have become thinner and the chips’ circuits more complex, both the power of the chips and the electronic devices they drive have vastly increased. (GMAT Prep)

A. the chips’ circuits more complex, both the power of the chips and the electronic devices they drive have
B. the chips’ circuits more complex, the power of both the chips and the electronic devices they drive has
C. the chips’ circuits are more complex, both the power of the chips and the electronic devices they drive has
D. their circuits are more complex, the power of both the chips and the electronic devices they drive have
E. their circuits more complex, both the power of the chips and the electronic devices they drive have

MEANING ANAYSIS:

• The etched lines on computer memory chips have become thinner, and the chips’ circuits have become more complex. These have resulted into two things:
1. the power of the chips have increased, and
2. the electronic devices they derive have increased.

ERROR ANALYSIS:

• From the meaning analysis, we can logically say that the two changes in the memory chips have resulted in increase in the power of the chips. But it is not logical to say that these changes have led to increase in the devices they drive. Increase in the number of devices these chips drive depend on many other factors. Hence, despite being GRAMMATICALLY correct, this choice stands LOGICALLY incorrect.

PoE:

A. the chips’ circuits more complex, both the power of the chips and the electronic devices they drive have: Incorrect for the reason stated above.

B. the chips’ circuits more complex, the power of both the chips and the electronic devices they drive has: Correct. This choice is grammatically as well as logically correct. The changes in the memory chips have resulted in increase in power of the chips as well as the devices they drive.


C. the chips’ circuits are more complex, both the power of the chips and the electronic devices they drive has: Incorrect.
1. Use of “are” is incorrect. The effect of the changes can still be felt in the present.
2. Repeats the logical parallelism error as in choice A.
3. Singular “has” does not agree in number with its plural subject.

D. their circuits are more complex, the power of both the chips and the electronic devices they drive have: Incorrect.
1. Same verb tense error as in choice C.
2. Plural verb “have” does not agree in number with its singular subject “the power”.

E. their circuits more complex, both the power of the chips and the electronic devices they drive have: Incorrect. Same logical parallelism error as in choice A.

Thanks.


Hi Shraddha and Rajat,

I have a doubt about choice A. The way I understand the phrase "..both the power of the chips and the electronic devices they drive..." is that it states the POWER of BOTH the chips AND the electronic devices. I think my understanding is opposite to the way you explained why not to choose choice A. How to prevent this ambiguity in future as I eliminate the answer choice?

Regards,
Lucy
_________________

Start to fall in love with GMAT <3

Intern
Intern
avatar
Joined: 05 Apr 2013
Posts: 9
Concentration: Operations, Finance
GPA: 3.8
Followers: 0

Kudos [?]: 6 [0], given: 35

Re: PARALLELISM: GRAMMAR VS LOGIC [#permalink] New post 24 Oct 2013, 00:40
Hi Rajat/Shraddha,

My question is pertaining to the example below:

GUIDED EXAMPLE 2

Among lower paid workers union members are less likely than non-union members to be enrolled in lower end insurance plans imposing stricter limits on medical services and requiring doctors to see more patients and spend less time with each. (GMAT Prep)

A. imposing stricter limits on medical services and requiring doctors to see more patients, and spend
B. imposing stricter limits on medical services, requiring doctors to see more patients, and spending
C. that impose stricter limits on medical services, require doctors to see more patients, and spend
D. that impose stricter limits on medical services and require doctors to see more patients, spending
E. that impose stricter limits on medical services, requiring doctors to see more patients and spending
F. that impose stricter limits on medical services, requiring doctors to see more patients and spend

If we set aside the original correct answer choice (i.e D) for time being, and introduce choice (F) in its place, would it be the correct ans choice from the logical parallelism as grammatical parallelism view point?
Intern
Intern
avatar
Joined: 26 Jul 2013
Posts: 2
Followers: 0

Kudos [?]: 0 [0], given: 0

Re: PARALLELISM: GRAMMAR VS LOGIC [#permalink] New post 27 Oct 2013, 07:33
Between choice B: "the chips’ circuits more complex"and choice C: the chips’ circuits are more complex, is there anything wrong in both phrases? can we consider this an example of ellises?? Thanks.
Intern
Intern
avatar
Joined: 09 Jun 2009
Posts: 1
Followers: 0

Kudos [?]: 0 [0], given: 0

Re: PARALLELISM: GRAMMAR VS LOGIC [#permalink] New post 30 Mar 2014, 20:51
bagdbmba wrote:
egmat wrote:
Hi All,

First of all, I would like thank all of you for appreciating this article and showering Kudos. Such overwhelming responses keep us motivated to write more articles. :)

Here is the detailed explanation for both the exercise questions.

EXERCISE QUESTION: 1


Since digital recording offers essentially perfect reproduction - on compact discs, digital audiotapes, or digital videodiscs - audiophiles can accumulate music, transferring them from one format to another, copying it, and digitally altering it with little effort and not damaging the sound quality. (GMAT Prep)

A. music, transferring them from one format to another, copying it, and digitally altering it with little effort and not damaging
B. music, transferring it from one format to another, copying it, and digitally altering it with little effort and no damage to
C. music, transfer it from one format to another, copy it, and digitally alter it with little effort and no damage to
D. music and transfer it from one format to another, copy it, and then digitally altering it with little effort and not damaging
E. music and transfer it from one format to another, copying it, and digitally alter it with little effort and no damage to

MEANING ANAYSIS:

Let us first understand the meaning of the sentence. This step is extremely necessary to understand what the LOGICAL intended meaning of the sentence is.

The sentence says that because digital recording offers perfect reproduction, audiophiles can collect music by doing three things:
a. transferring them from one format to another,
b. copying it, and
c. digitally altering it with little effort and not damaging the sound quality.

ERROR ANALYSIS:

• There is a list of three things through which audiophiles can accumulate music. All three are the part of the process that completes the process of accumulation of music in audiophiles. All the entities are correctly written in verb-ing modifier form, meaning they all provide information as to how the music is accumulated in audiophiles.
• There is another list in the third entity of the first list – altering it with:
a. little effort, and
b. not damaging the sound quality.

The first entity of this sub-list is a noun phrase made up of adjective + noun. The second entity is also a noun phrase. However, the grammatical structure of this entity is different from the other. Here we have an adverb (not) followed by a gerund – a noun that denotes action. This entity can very well be written in the form of the first entity as “no damage”.
• Plural pronoun “them” does not agree in number with its singular antecedent “music”.

PoE:

A. music, transferring them from one format to another, copying it, and digitally altering it with little effort and not damaging: Incorrect for the reasons mentioned above.

B. music, transferring it from one format to another, copying it, and digitally altering it with little effort and no damage to: Correct. This choice not only maintains the grammatical parallelism of both the main list and the sub list but also maintains the logical parallelism, conveying the logical meaning.

C. music, transfer it from one format to another, copy it, and digitally alter it with little effort and no damage to: Incorrect. Grammatically, this choice is correct. The list per this choice is - audiophiles can:
a. accumulate music,
b. transfer it…
c. copy it, and
d. alter it…
Grammatically, all the entities are parallel here, but now they convey a very different meaning. The last three entities in the list are no more the three steps of accumulating music in audiophiles. All these entities are independent entities now. This choice clearly stands INCORRECT despite being grammatically parallel because it violates the LOGICAL intended meaning of the sentence.

D. music and transfer it from one format to another, copy it, and then digitally altering it with little effort and not damaging: Incorrect.
1. Use of “and” after music is incorrect.
2. “not damaging” is not parallel to “little effort”.

E. music and transfer it from one format to another, copying it, and digitally alter it with little effort and no damage to: Incorrect. Use of “and” after music is incorrect as it creates an unintended list which is not even parallel.

EXERCISE QUESTION: 2


As the etched lines on computer memory chips have become thinner and the chips’ circuits more complex, both the power of the chips and the electronic devices they drive have vastly increased. (GMAT Prep)

A. the chips’ circuits more complex, both the power of the chips and the electronic devices they drive have
B. the chips’ circuits more complex, the power of both the chips and the electronic devices they drive has
C. the chips’ circuits are more complex, both the power of the chips and the electronic devices they drive has
D. their circuits are more complex, the power of both the chips and the electronic devices they drive have
E. their circuits more complex, both the power of the chips and the electronic devices they drive have

MEANING ANAYSIS:

• The etched lines on computer memory chips have become thinner, and the chips’ circuits have become more complex. These have resulted into two things:
1. the power of the chips have increased, and
2. the electronic devices they derive have increased.

ERROR ANALYSIS:

• From the meaning analysis, we can logically say that the two changes in the memory chips have resulted in increase in the power of the chips. But it is not logical to say that these changes have led to increase in the devices they drive. Increase in the number of devices these chips drive depend on many other factors. Hence, despite being GRAMMATICALLY correct, this choice stands LOGICALLY incorrect.

PoE:

A. the chips’ circuits more complex, both the power of the chips and the electronic devices they drive have: Incorrect for the reason stated above.

B. the chips’ circuits more complex, the power of both the chips and the electronic devices they drive has: Correct. This choice is grammatically as well as logically correct. The changes in the memory chips have resulted in increase in power of the chips as well as the devices they drive.


C. the chips’ circuits are more complex, both the power of the chips and the electronic devices they drive has: Incorrect.
1. Use of “are” is incorrect. The effect of the changes can still be felt in the present.
2. Repeats the logical parallelism error as in choice A.
3. Singular “has” does not agree in number with its plural subject.

D. their circuits are more complex, the power of both the chips and the electronic devices they drive have: Incorrect.
1. Same verb tense error as in choice C.
2. Plural verb “have” does not agree in number with its singular subject “the power”.

E. their circuits more complex, both the power of the chips and the electronic devices they drive have: Incorrect. Same logical parallelism error as in choice A.

Thanks.



Hi Shradhha/Rajat,
I'm having some confusion over the 2nd qs. answer...!! Need your help for clarification guys...

As you've mentioned that 'B' is the correct answer and Use of “are” is incorrect (and The effect of the changes can still be felt in the present.), then the the second clause (or if we remove the part "the etched lines on computer memory chips have become thinner" from the clause starting with 'As') following 'and' in the 1st part of the sentence (i.e. the part starting with 'As') is as follows:

"As the chips’ circuits more complex"...It doesn't contain any conjugated verb(rather, any verb) so it's basically a fragment.How it can be a fragment NOT a clause..? Would you please help me understand it..?

Highly appreciate your reply on this.


Why are you looking for sentence or fragment, why can't be assume this "As the chips’ circuits more complex" a PHRASE !!! Following this phrase we have proper CLAUSE. So I don't see any issue. Please let me know, if i am not correct.
Intern
Intern
avatar
Joined: 09 Nov 2012
Posts: 13
Location: India
saurav: suman
Concentration: Finance, Technology
GMAT Date: 09-02-2014
GPA: 3.38
WE: Engineering (Energy and Utilities)
Followers: 1

Kudos [?]: 9 [0], given: 28

GMAT ToolKit User
Re: PARALLELISM: GRAMMAR VS LOGIC [#permalink] New post 06 May 2014, 02:47
egmat wrote:
Hi All,

First of all, I would like thank all of you for appreciating this article and showering Kudos. Such overwhelming responses keep us motivated to write more articles. :)

Here is the detailed explanation for both the exercise questions.

EXERCISE QUESTION: 1


Since digital recording offers essentially perfect reproduction - on compact discs, digital audiotapes, or digital videodiscs - audiophiles can accumulate music, transferring them from one format to another, copying it, and digitally altering it with little effort and not damaging the sound quality. (GMAT Prep)

A. music, transferring them from one format to another, copying it, and digitally altering it with little effort and not damaging
B. music, transferring it from one format to another, copying it, and digitally altering it with little effort and no damage to
C. music, transfer it from one format to another, copy it, and digitally alter it with little effort and no damage to
D. music and transfer it from one format to another, copy it, and then digitally altering it with little effort and not damaging
E. music and transfer it from one format to another, copying it, and digitally alter it with little effort and no damage to

MEANING ANAYSIS:

Let us first understand the meaning of the sentence. This step is extremely necessary to understand what the LOGICAL intended meaning of the sentence is.

The sentence says that because digital recording offers perfect reproduction, audiophiles can collect music by doing three things:
a. transferring them from one format to another,
b. copying it, and
c. digitally altering it with little effort and not damaging the sound quality.

ERROR ANALYSIS:

• There is a list of three things through which audiophiles can accumulate music. All three are the part of the process that completes the process of accumulation of music in audiophiles. All the entities are correctly written in verb-ing modifier form, meaning they all provide information as to how the music is accumulated in audiophiles.
• There is another list in the third entity of the first list – altering it with:
a. little effort, and
b. not damaging the sound quality.

The first entity of this sub-list is a noun phrase made up of adjective + noun. The second entity is also a noun phrase. However, the grammatical structure of this entity is different from the other. Here we have an adverb (not) followed by a gerund – a noun that denotes action. This entity can very well be written in the form of the first entity as “no damage”.
• Plural pronoun “them” does not agree in number with its singular antecedent “music”.

PoE:

A. music, transferring them from one format to another, copying it, and digitally altering it with little effort and not damaging: Incorrect for the reasons mentioned above.

B. music, transferring it from one format to another, copying it, and digitally altering it with little effort and no damage to: Correct. This choice not only maintains the grammatical parallelism of both the main list and the sub list but also maintains the logical parallelism, conveying the logical meaning.

C. music, transfer it from one format to another, copy it, and digitally alter it with little effort and no damage to: Incorrect. Grammatically, this choice is correct. The list per this choice is - audiophiles can:
a. accumulate music,
b. transfer it…
c. copy it, and
d. alter it…
Grammatically, all the entities are parallel here, but now they convey a very different meaning. The last three entities in the list are no more the three steps of accumulating music in audiophiles. All these entities are independent entities now. This choice clearly stands INCORRECT despite being grammatically parallel because it violates the LOGICAL intended meaning of the sentence.

D. music and transfer it from one format to another, copy it, and then digitally altering it with little effort and not damaging: Incorrect.
1. Use of “and” after music is incorrect.
2. “not damaging” is not parallel to “little effort”.

E. music and transfer it from one format to another, copying it, and digitally alter it with little effort and no damage to: Incorrect. Use of “and” after music is incorrect as it creates an unintended list which is not even parallel.

EXERCISE QUESTION: 2


As the etched lines on computer memory chips have become thinner and the chips’ circuits more complex, both the power of the chips and the electronic devices they drive have vastly increased. (GMAT Prep)

A. the chips’ circuits more complex, both the power of the chips and the electronic devices they drive have
B. the chips’ circuits more complex, the power of both the chips and the electronic devices they drive has
C. the chips’ circuits are more complex, both the power of the chips and the electronic devices they drive has
D. their circuits are more complex, the power of both the chips and the electronic devices they drive have
E. their circuits more complex, both the power of the chips and the electronic devices they drive have

MEANING ANAYSIS:

• The etched lines on computer memory chips have become thinner, and the chips’ circuits have become more complex. These have resulted into two things:
1. the power of the chips have increased, and
2. the electronic devices they derive have increased.

ERROR ANALYSIS:

• From the meaning analysis, we can logically say that the two changes in the memory chips have resulted in increase in the power of the chips. But it is not logical to say that these changes have led to increase in the devices they drive. Increase in the number of devices these chips drive depend on many other factors. Hence, despite being GRAMMATICALLY correct, this choice stands LOGICALLY incorrect.

PoE:

A. the chips’ circuits more complex, both the power of the chips and the electronic devices they drive have: Incorrect for the reason stated above.

B. the chips’ circuits more complex, the power of both the chips and the electronic devices they drive has: Correct. This choice is grammatically as well as logically correct. The changes in the memory chips have resulted in increase in power of the chips as well as the devices they drive.


C. the chips’ circuits are more complex, both the power of the chips and the electronic devices they drive has: Incorrect.
1. Use of “are” is incorrect. The effect of the changes can still be felt in the present.
2. Repeats the logical parallelism error as in choice A.
3. Singular “has” does not agree in number with its plural subject.

D. their circuits are more complex, the power of both the chips and the electronic devices they drive have: Incorrect.
1. Same verb tense error as in choice C.
2. Plural verb “have” does not agree in number with its singular subject “the power”.

E. their circuits more complex, both the power of the chips and the electronic devices they drive have: Incorrect. Same logical parallelism error as in choice A.

Thanks.


Nice post e-GMAT.
It will help non- native (Like me) to understand parallelism issue easily
Senior Manager
Senior Manager
avatar
Joined: 10 Apr 2012
Posts: 279
Location: United States
Concentration: Technology, Other
GPA: 2.44
WE: Project Management (Telecommunications)
Followers: 2

Kudos [?]: 174 [0], given: 323

GMAT ToolKit User Premium Member CAT Tests
John prepared for Hurricane Sandy in advance, [#permalink] New post 02 Sep 2014, 08:57
John prepared for Hurricane Sandy in advance, storing enough food and water, purchased flashlights and candles for possible power outages, and charging his cellphone to reach out to authorities in case of emergency.

A. storing enough food and water, purchased flashlights and candles for possible power outages, and charging

B. storing enough food and water, purchased flashlights and candles for possible power outages, had charged

C. storing enough food and water, purchasing flashlights and candles for possible power outages, and charging

D. stored enough food and water, purchased flashlights and candles for possible power outages, and charged

E. stored enough food and water, and purchased flashlights and candles for possible power outages, being charged

OA to follow
John prepared for Hurricane Sandy in advance,   [#permalink] 02 Sep 2014, 08:57
    Similar topics Author Replies Last post
Similar
Topics:
2 Experts publish their posts in the topic And vs Parallelism kumvinod 5 07 Aug 2012, 01:03
2 Experts publish their posts in the topic GMAT Grammar and Logic: Spoken English vs. Written English margarette 0 27 Jul 2012, 12:45
4 Grammar Greater vs. More bmwhype2 22 11 Jul 2007, 18:45
Grammar - Parallelism bmwhype2 10 04 Jul 2007, 09:21
Display posts from previous: Sort by

PARALLELISM: GRAMMAR VS LOGIC

  Question banks Downloads My Bookmarks Reviews Important topics  

Go to page   Previous    1   2   3    Next  [ 41 posts ] 



GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.