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Five hundred million different species of living creatures

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Five hundred million different species of living creatures [#permalink] New post 25 Feb 2012, 10:46
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A
B
C
D
E

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(N/A)

Question Stats:

75% (01:48) correct 25% (00:40) wrong based on 37 sessions
Five hundred million different species of living creatures have appeared on Earth, nearly 99 percent of them vanishing.

A. Five hundred million different species of living creatures have appeared on Earth, nearly 99 percent of them vanishing.
B. Nearly 99 percent of five hundred million different species of living creatures that appeared on Earth have vanished.
C. Vanished are nearly 99 percent of the five hundred million different species of living creatures that appeared on Earth.
D. Of five hundred million different species of living creatures that have appeared on Earth, nearly 99 percent of them have vanished.
E. Of the five hundred million different species of living creatures that have appeared on Earth, nearly 99 percent have vanished.

Any idea what will be the correct answer guys? I am confused between D and E.
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Re: SC of GMAT prep [#permalink] New post 25 Feb 2012, 14:07
A, C, and D ("of them" = unnecessary) are awkward, so eliminated.

B and E both work but E sounds better. What's the OA?
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Re: SC of GMAT prep [#permalink] New post 25 Feb 2012, 14:18
It is E and I got your point. Thanks.
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Re: SC of GMAT prep [#permalink] New post 25 Feb 2012, 18:42
E. Have vanished - doesn't require "of them have vanished"
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Re: SC of GMAT prep [#permalink] New post 25 Feb 2012, 20:37
enigma123 wrote:
Five hundred million different species of living creatures have appeared on Earth, nearly 99 percent of them vanishing.

A. Five hundred million different species of living creatures have appeared on Earth, nearly 99 percent of them vanishing.
B. Nearly 99 percent of five hundred million different species of living creatures that appeared on Earth have vanished.
C. Vanished are nearly 99 percent of the five hundred million different species of living creatures that appeared on Earth.
D. Of five hundred million different species of living creatures that have appeared on Earth, nearly 99 percent of them have vanished.
E. Of the five hundred million different species of living creatures that have appeared on Earth, nearly 99 percent have vanished.

Any idea what will be the correct answer guys? I am confused between D and E.


Hi,

+ 1 E

The question says that out of the 500 Mil species, 99% have vanished & you have to seek this relationship
A,B,C are eliminated since they cannot establish the above relationship

D - "0f 500 million" => that there could be even 1000 Million species & 99% of the 500 Million disappeared which is wrong
E = the adding of the makes it specific thus is correct

Hope this helps :-D
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Re: SC of GMAT prep [#permalink] New post 27 Feb 2012, 07:43
IMO E.

I selected E and it is correct.
However, i am not sure why B is wrong.Can someone please elaborate why B is wrong??

Thanks!!
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Re: SC of GMAT prep [#permalink] New post 27 Feb 2012, 19:19
I got stuck between B and E then chose E.

B just didn't convey the meaning the same way E does.

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Re: SC of GMAT prep [#permalink] New post 27 Feb 2012, 21:46
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Choice E is correct one because in choice D "them" is ambiguous.

In choice B, percentage of plural noun + singular verb (S - V agreement)
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Re: Five hundred million different species of living creatures [#permalink] New post 23 Aug 2013, 00:10
enigma123 wrote:
Five hundred million different species of living creatures have appeared on Earth, nearly 99 percent of them vanishing.

A. Five hundred million different species of living creatures have appeared on Earth, nearly 99 percent of them vanishing.
B. Nearly 99 percent of five hundred million different species of living creatures that appeared on Earth have vanished.
C. Vanished are nearly 99 percent of the five hundred million different species of living creatures that appeared on Earth.
D. Of five hundred million different species of living creatures that have appeared on Earth, nearly 99 percent of them have vanished.
E. Of the five hundred million different species of living creatures that have appeared on Earth, nearly 99 percent have vanished.

Any idea what will be the correct answer guys? I am confused between D and E.



I ruled out A,C and D and was considering B and E and finally chose E.

But why B is incorrect??

Nearly 99 percent of five hundred million different species ------> %age of 500 Million Species is indicating "a group" so in case we had an answer choice with verb "has vanished" would that be correct ??

It does not sound so....

Experts please elaborate a reasoning for Option B
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Five hundred million different species of living creatures [#permalink] New post 22 Jul 2014, 00:53
My 2 cents: B vs E.
In B "creatures that appeared" past tense is not correct, because 500mill species as a group even shares species of present tense also. Therefore, limiting their appearance in the past overall is not good. In option E use of present perfect eliminates that error. Further, this question is not explained properly on any reliable forum by any expert. above mentioned difference is the only thing I managed to figure out.

B. Nearly 99 percent of five hundred million different species of living creatures that appeared on Earth have vanished.
E. Of the five hundred million different species of living creatures that have appeared on Earth, nearly 99 percent have vanished.
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Re: Five hundred million different species of living creatures [#permalink] New post 22 Jul 2014, 22:51
A. them - ambiguously refers to living creatures, living creatures that have appeared of the Earth etc.
B. "appeared", "have vanished" - states that the creatures existed. To make it parallel the second clause should also be in past tense.
C. "vanished are", "appeared" - not a parallel construction
D. them - ambiguously refers to living creatures, living creatures that have appeared of the Earth etc.
E. correct answer.


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Re: Five hundred million different species of living creatures   [#permalink] 22 Jul 2014, 22:51
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