the number

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the number

by maihuna » Tue Jun 21, 2011 10:34 am
The amount of car accidents caused by faulty brakes, like accidents caused by faulty wiring, has increased significantly since regulations on manufacturing have been relaxed.
SAME
The amount of car accidents caused by faulty brakes, like those caused by faulty wiring, have increased significantly since regulations on manufacturing were relaxed.
The number of car accidents caused by faulty brakes, like the number caused by faulty wiring, have increased significantly since regulations on manufacturing were relaxed.
The number of car accidents caused by faulty brakes, like accidents caused by faulty wiring, has increased significantly since regulations on manufacturing had been relaxed.
The number of car accidents caused by faulty brakes, like the number caused by faulty wiring, has increased significantly since regulations on manufacturing were relaxed.
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by sameerballani » Tue Jun 21, 2011 10:41 am
maihuna wrote: The amount of car accidents caused by faulty brakes, like accidents caused by faulty wiring, has increased significantly since regulations on manufacturing have been relaxed.
SAME
The amount of car accidents caused by faulty brakes, like those caused by faulty wiring, have increased significantly since regulations on manufacturing were relaxed.

The number of car accidents caused by faulty brakes, like the number caused by faulty wiring, have increased significantly since regulations on manufacturing were relaxed.

The number of car accidents caused by faulty brakes, like accidents caused by faulty wiring, has increased significantly since regulations on manufacturing had been relaxed.

The number of car accidents caused by faulty brakes, like the number caused by faulty wiring, has increased significantly since regulations on manufacturing were relaxed.

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by abhishek.pati » Tue Jun 21, 2011 10:52 am
IMO D

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by aspirant2011 » Tue Jun 21, 2011 10:53 am
The amount of car accidents caused by faulty brakes, like accidents caused by faulty wiring, has increased significantly since regulations on manufacturing have been relaxed.

The amount of car accidents caused by faulty brakes, like accidents caused by faulty wiring, has increased significantly since regulations on manufacturing have been relaxed. ----- amount is used for non countable items

The amount of car accidents caused by faulty brakes, like those caused by faulty wiring, have increased significantly since regulations on manufacturing were relaxed. ------- same as A

The number of car accidents caused by faulty brakes, like the number caused by faulty wiring, have increased significantly since regulations on manufacturing were relaxed. ------- the number is singular

The number of car accidents caused by faulty brakes, like accidents caused by faulty wiring, has increased significantly since regulations on manufacturing had been relaxed. ------> wrong comparison

The number of car accidents caused by faulty brakes, like the number caused by faulty wiring, has increased significantly since regulations on manufacturing were relaxed.

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by GMATGuruNY » Tue Jun 21, 2011 10:54 am
maihuna wrote: The amount of car accidents caused by faulty brakes, like accidents caused by faulty wiring, has increased significantly since regulations on manufacturing have been relaxed.
SAME
The amount of car accidents caused by faulty brakes, like those caused by faulty wiring, have increased significantly since regulations on manufacturing were relaxed.
The number of car accidents caused by faulty brakes, like the number caused by faulty wiring, have increased significantly since regulations on manufacturing were relaxed.
The number of car accidents caused by faulty brakes, like accidents caused by faulty wiring, has increased significantly since regulations on manufacturing had been relaxed.
The number of car accidents caused by faulty brakes, like the number caused by faulty wiring, has increased significantly since regulations on manufacturing were relaxed.
In A and B, amount should not be used to refer to a countable noun such as accidents. Eliminate A and B.

In C, the number (singular) does not agree with have increased (plural). Eliminate C.

In D, the number cannot be compared to accidents. Eliminate D.

The correct answer is E.

An important distinction:

A number mean "numerous" and thus is plural:

A number of people are coming.

The number means an actual number and thus is singular. We don't say five are a small number; we say five IS a small number:

The number of people in this room is small.
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by rishijhawar » Mon Jul 18, 2011 1:56 am
Hi Mitch, thanks for a great explanation, as always.
Though its an old post, still need your help on E vs D.
Can't we consider the missing "the number of car" in D as Ellipsis and hence D as correct choice. Because I chose D as it didnt has any other flaw.
My knowledge on this technique is limited but I think while choosing E, we are indeed applying some bit of Ellipsis. Because "of car accidents" after "the number" is missing too in E. Otherwise second part of E sounds like the number caused by the faulty wiring..... which doesn't make much sense.

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by GMATGuruNY » Mon Jul 18, 2011 10:31 am
rishijhawar wrote:Hi Mitch, thanks for a great explanation, as always.
Though its an old post, still need your help on E vs D.
Can't we consider the missing "the number of car" in D as Ellipsis and hence D as correct choice. Because I chose D as it didnt has any other flaw.
My knowledge on this technique is limited but I think while choosing E, we are indeed applying some bit of Ellipsis. Because "of car accidents" after "the number" is missing too in E. Otherwise second part of E sounds like the number caused by the faulty wiring..... which doesn't make much sense.
In D, once a reader has read the number...like accidents, it's too late for ellipsis. The sentence seems to be comparing the number to accidents. The damage has been done.

In E, the repetition of the number makes it clear what's being compared: the number of car accidents caused by faulty brakes, like the number [of accidents] caused by faulty wiring. In the second half of the comparison, of accidents has been omitted, but its presence is understood.

Another error in D: had been relaxed should not be in the past perfect tense.
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by rishijhawar » Mon Jul 18, 2011 11:49 am
Mitch, thanks again for clarifying.
Could you please share some material/thread on Ellipsis? I remember seeing this in the BTG site sometime back, but if you have something useful basic stuff, that would be great. Sorry.

On usage of Past Perfect in D, I thought it was correct as relaxation of regulations (earlier of the two past events) would have resulted in increase in the number of accidents (later past event)
Please correct if I am wrong.

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by GMATGuruNY » Mon Jul 18, 2011 12:09 pm
rishijhawar wrote:Mitch, thanks again for clarifying.
Could you please share some material/thread on Ellipsis? I remember seeing this in the BTG site sometime back, but if you have something useful basic stuff, that would be great. Sorry.

On usage of Past Perfect in D, I thought it was correct as relaxation of regulations (earlier of the two past events) would have resulted in increase in the number of accidents (later past event)
Please correct if I am wrong.
The past perfect implies that the regulations HAD been relaxed, but at some point in the past, they STOPPED being relaxed.
The intended meaning of the sentence is that the regulations continue to be relaxed and that, since they WERE relaxed, the number of accidents has increased. Hence, the past perfect in D is inappropriate.

I suggest that you search BTG for ellipsis. You'll find many threads on the subject.
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