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# To develop more accurate population forecasts, demographers

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Intern
Joined: 06 Sep 2015
Posts: 32
Location: India
Schools: ISB '18
GMAT 1: 660 Q50 V28
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Kudos [?]: 2 [0], given: 36

Re: To develop more accurate population forecasts, demographers [#permalink]

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20 Oct 2016, 21:08
I rejected choices with "would" because "would" conveys a sense of possibility but question stem conveys the meaning that "demographers have to know a great deal", its not a possibility or a choice.

Please explain the gap in my understanding.
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Re: To develop more accurate population forecasts, demographers [#permalink]

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13 Dec 2016, 09:00
hbs2012 wrote:
To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic detriments of fertility.

(A) have to know a great deal more than now about the social and economic
(B) have to know a great deal more than they do now about the social and economical
(C) would have to know a great deal more than they do now about the social and economical
(D) would have to know a great deal more than they do now about the social and economic
(E) would have to know a great deal more than now about the social and economical

Question 32 Set 1

help

why A is wrong?
A means
demographer have to know more than they HAVE TO KNOW NOW. this is not logic
D means
demographer have to know more than they do/ know now. remember "do" can not refer to "have to" because "have to" now works as helping verb. so "do" grammatically refer to "know" .

am i correct?
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Re: To develop more accurate population forecasts, demographers [#permalink]

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21 May 2017, 12:01
Merged topics. Please, search before posting questions!
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Re: To develop more accurate population forecasts, demographers   [#permalink] 21 May 2017, 12:01

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