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# With the advent of better imaging technologies and space-based telesco

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SVP
Status: Preparing GMAT
Joined: 02 Nov 2016
Posts: 1722
Location: Pakistan
GPA: 3.39

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19 Mar 2017, 08:57
00:00

Difficulty:

25% (medium)

Question Stats:

74% (00:56) correct 26% (01:28) wrong based on 49 sessions

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Source: McGraw Hill GMAT

With the advent of better imaging technologies and space-based telescopes, the number of planets discovered outside our solar system have steadily increased.

A. With the advent of better imaging technologies and space-based telescopes, the number of planets discovered outside our solar system have steadily increased
B. With the advent of better imaging technologies and space-based telescopes, the number of planets discovered outside our solar system has steadily increased
C. Steadily increasing due to the advent of better imaging technologies and spacebased telescopes have been the number of planets discovered outside our solar system
D. Better imaging technologies and space-based telescopes have steadily increased the discovery of planets outside our solar system
E. The number of planets discovered outside our solar system are steadily increasing with the advent of better imaging telescopes and space-based telescopes

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Manager
Joined: 05 Apr 2014
Posts: 140
Location: India
Schools: ISB '19, Fox"19
GMAT 1: 660 Q48 V33
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19 Mar 2017, 09:25
B
The number of xyz - singular.
A number of xyz - plural

A- out of above reasons
B - will keep.. no error so far
C- steadily increasing ...have been the number of planets
Awkward construction
D- better imaging techniques ..have increased the discovery of planets.
But we intent to say .

Better used techniques and... has increased the number of planets discovered.
Changed meaning..incorrect
E- subject verb Agreement error
The number of planets...are increasing..

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Manager
Joined: 20 Aug 2016
Posts: 52
GMAT 1: 650 Q48 V31
GMAT 2: 670 Q45 V36
GMAT 3: 680 Q47 V35
GMAT 4: 720 Q49 V40
Re: With the advent of better imaging technologies and space-based telesco  [#permalink]

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19 Mar 2017, 10:25
B. 'The' number is singular. C has no referrent to have.
D is wrong because it changes the meaning

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Manager
Joined: 03 Jan 2016
Posts: 59
Location: India
WE: Engineering (Energy and Utilities)
Re: With the advent of better imaging technologies and space-based telesco  [#permalink]

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19 Mar 2017, 12:19
The number of XX is Singular subject, which requires singular Verb.
Re: With the advent of better imaging technologies and space-based telesco &nbs [#permalink] 19 Mar 2017, 12:19
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