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# To develop more accurate population forecasts, demographers

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Manager
Joined: 07 Oct 2005
Posts: 141
Location: Boston,MA
To develop more accurate population forecasts, demographers [#permalink]

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06 Dec 2007, 15:58
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To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants 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
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--gregspirited

Director
Joined: 12 Jul 2007
Posts: 858

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06 Dec 2007, 16:09
D for me.

EDIT: check out this post about economic vs economical (towards the bottom) http://www.gmatclub.com/forum/t56711

Economic is the correct word in this situation.
Manager
Joined: 07 Oct 2005
Posts: 141
Location: Boston,MA

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06 Dec 2007, 16:18
eschn3am wrote:
D for me.

EDIT: check out this post about economic vs economical (towards the bottom) http://www.gmatclub.com/forum/t56711

Economic is the correct word in this situation.

OA is NOT D. I too went with D.
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--gregspirited

Director
Joined: 12 Jul 2007
Posts: 858

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06 Dec 2007, 16:27
wow...really?

judging by your title then I'd guess it's either B, C or E. I'm interested in hearing why this one isn't D.
Director
Joined: 26 Mar 2006
Posts: 631
Re: SC - economic vs economical [#permalink]

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06 Dec 2007, 16:36
gregspirited wrote:
To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants 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

Will go for 'B'

The first subordinate clause starts with an infinitive To develop, so we may not need a subjunctive mood .would have

economical determinants - is good diction
Director
Joined: 13 Dec 2006
Posts: 510
Location: Indonesia
Re: SC - economic vs economical [#permalink]

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06 Dec 2007, 17:39
gregspirited wrote:
To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants 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

Economical determinant is absolutely no-no

reason- ecnomical means sparing in the use of resources.

Whats the source of the question? I will still go with D

Amar
Director
Joined: 26 Mar 2006
Posts: 631

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06 Dec 2007, 19:48
http://www.gmatclub.com/forum/t46152

http://www.gmatclub.com/forum/t52827

I went for 'B' and made the same mistake as last time
06 Dec 2007, 19:48
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# To develop more accurate population forecasts, demographers

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