RBBmba@2014 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.

(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

OA: B

P.S: It's an official question.
@Experts - could you please share your detail explanation.

Hi,

If we are using the Idiom Both A and B then A and B should be of same type.

In Option A, C and E, we can see that they are using Power of Chips and electronic devices which is wrong. Whereas in B and D, it is Chips and Electronic devices - correct

and between B and D.

has and Have- But the subject is The power hence we need singular subject 'HAS'
hence B

Regards,
Uva

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.

(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

A and E: both the POWER...and the DEVICES...HAVE vastly increased.
Not the intended meaning.
The devices themselves have not increased; the POWER of the devices has increased.
Eliminate A and E.

In C, has (singular) does not agree with both the POWER and the DEVICES (plural).
Eliminate C.

In D, have (plural) does not agree with the power (singular).
Eliminate D.

The correct answer is B.

Hello Mitch,

Are C and D also incorrect because of incorrect usage of present tense?
i.e unnecessary transition from present perfect to simple present
Also simple present is used to state facts, general truth, statistical truths etc but none of these are in the sentence under discussion.


However, in ABE have become is implied
Mitch can you confirm?
Thanks

aflaam wrote:Hello Mitch,

Are C and D also incorrect because of incorrect usage of present tense?
i.e unnecessary transition from present perfect to simple present
Also simple present is used to state facts, general truth, statistical truths etc but none of these are in the sentence under discussion.

However, in ABE have become is implied
Mitch can you confirm?
Thanks

Correct on all counts.
Good work.

Hi Mitch/Experts,

I have 2 issues with this question:

1. I could shortlist A and B but instead of B I chose A. I did not see any issue with saying that with the chips becoming more efficient both its power and the number of devices it can support have increased. How do we know that it is not the intended meaning?

Also both the elements are the result of sophisticated circuits therefore, they logically also seem the correct elements of the list.

2.I want to understand how is a clause attached as a modifier. Don't we need a comma or a that in between

As the etched lines on computer memory chips have become thinner and the chips' circuits more complex,[DP]
the power of both the chips and the electronic devices they drive has vastly increased. [IP]


Please suggest.

GMATGuruNY wrote:

aflaam wrote:Hello Mitch,

Are C and D also incorrect because of incorrect usage of present tense?
i.e unnecessary transition from present perfect to simple present
Also simple present is used to state facts, general truth, statistical truths etc but none of these are in the sentence under discussion.

However, in ABE have become is implied
Mitch can you confirm?
Thanks

Correct on all counts.
Good work.

Hi Mitch,
Is the this part parallel ? "As the etched lines on computer memory chips have become thinner and the chips' circuits more complex" .
Shouldn't the second part (after "and ") have a verb ?
Although I got to the right choice coz of "has/have", reading this line gave me an awkward impression.
Please clarify !
Thanks
Teja