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Some planning committee members—those representing the construction in

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Some planning committee members—those representing the construction in  [#permalink]

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New post Updated on: 24 Sep 2016, 02:26
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Question Stats:

39% (02:16) correct 61% (02:17) wrong based on 271 sessions

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Some planning committee members—those representing the construction industry—have significant financial interests in the committee’s decisions. No one who is on the planning committee lives in the suburbs, although many of them work there.
If the statements above are true, which one of the following must also be true?

(A) No persons with significant financial interests in the planning committee’s decisions are not in the construction industry.
(B) No person who has significant financial interest in the planning committee’s decisions lives in the suburbs.
(C) Some persons with significant financial interests in the planning committee’s decisions work in the suburbs.
(D) Some planning committee members who represent the construction industry do not work in the suburbs.
(E) Some persons with significant financial interests in the planning committee’s decisions do not live in the suburbs.

Can somebody suggest how to breakdown Option A. What do we deduce from double negative statement A. And what should be approach to simplify such statements.

Plz provide kudos if you liked practice qs.

Originally posted by FollowurDream on 23 Sep 2016, 23:15.
Last edited by abhimahna on 24 Sep 2016, 02:26, edited 1 time in total.
Corrected the format
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Re: Some planning committee members—those representing the construction in  [#permalink]

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New post 24 Sep 2016, 02:25
FollowurDream wrote:
Some planning committee members—those representing the construction industry—have significant financial interests in the committee’s decisions. No one who is on the planning committee lives in the suburbs, although many of them work there.
If the statements above are true, which one of the following must also be true?

(A) No persons with significant financial interests in the planning committee’s decisions are not in the construction industry.
(B) No person who has significant financial interest in the planning committee’s decisions lives in the suburbs.
(C) Some persons with significant financial interests in the planning committee’s decisions work in the suburbs.
(D) Some planning committee members who represent the construction industry do not work in the suburbs.
(E) Some persons with significant financial interests in the planning committee’s decisions do not live in the suburbs.

Can somebody suggest how to breakdown Option A. What do we deduce from double negative statement A. And what should be approach to simplify such statements.

Plz provide kudos if you liked practice qs.


Answer E.

We are given Some construction industry representative in the planning commission have financial interest. And No One in planning commission lives in Suburb although many work there.

(A) No persons with significant financial interests in the planning committee’s decisions are not in the construction industry. --> We don't know. There may be people who have financial interest but are not in the construction industry. So, Incorrect.

(B) No person who has significant financial interest in the planning committee’s decisions lives in the suburbs. --> There may be people who are not in the committee but have financial interest and line in suburb. Incorrect.

(C) Some persons with significant financial interests in the planning committee’s decisions work in the suburbs. --> No new information. Already stated. So, Hold.

(D) Some planning committee members who represent the construction industry do not work in the suburbs. --> We are not sure. May be all the member of the construction committee work in suburb. Incorrect.

(E) Some persons with significant financial interests in the planning committee’s decisions do not live in the suburbs. --> true. This includes the construction industry people also. So, its the BEST answer choice. We can cancel C also as we have got the best answer.
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Re: Some planning committee members—those representing the construction in  [#permalink]

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New post 24 Sep 2016, 02:41
(A) No persons with significant financial interests
in the planning committee’s decisions are not
in the construction industry.
Its basically saying that all persons with significant financial interests in planning committee decisions are in the construction industry.This is not necessarily true.Its talking about persons in general,not about committee members.There is no information is given about people who are not members of the committee.So this is not necessarily true.
(B) No person who has significant financial
interest in the planning committee’s decisions
lives in the suburbs.
Same as A.
(C) Some persons with significant financial
interests in the planning committee’s
decisions work in the suburbs.
Same as A
(D) Some planning committee members who
represent the construction industry do not
work in the suburbs.
According to the statements,many members work in the suburbs.Which means a few of them don't.There is no information given as to where do members representing construction work.Hence,all of them could work in the suburbs.
(E) Some persons with significant financial
interests in the planning committee’s
decisions do not live in the suburbs.
Since none of the committee members live in the suburbs,and some of the members have significant financial interests in the committee’s decisions,it can be concluded that some of the persons having financial interest in committee decisions do not live in the suburbs
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Re: Some planning committee members—those representing the construction in  [#permalink]

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New post 27 Jul 2017, 04:30
abhimahna wrote:
FollowurDream wrote:
Some planning committee members—those representing the construction industry—have significant financial interests in the committee’s decisions. No one who is on the planning committee lives in the suburbs, although many of them work there.
If the statements above are true, which one of the following must also be true?

(A) No persons with significant financial interests in the planning committee’s decisions are not in the construction industry.
(B) No person who has significant financial interest in the planning committee’s decisions lives in the suburbs.
(C) Some persons with significant financial interests in the planning committee’s decisions work in the suburbs.
(D) Some planning committee members who represent the construction industry do not work in the suburbs.
(E) Some persons with significant financial interests in the planning committee’s decisions do not live in the suburbs.

Can somebody suggest how to breakdown Option A. What do we deduce from double negative statement A. And what should be approach to simplify such statements.

Plz provide kudos if you liked practice qs.


Answer E.

We are given Some construction industry representative in the planning commission have financial interest. And No One in planning commission lives in Suburb although many work there.

(E) Some persons with significant financial interests in the planning committee’s decisions do not live in the suburbs. --> true. This includes the construction industry people also. So, its the BEST answer choice. We can cancel C also as we have got the best answer.


Hi Abhimahna,

I dont understand why C is incorrect at all. This is not a beauty contest like Sentence correction where we have to go for the best option.

This is Critical Reasoning, there HAS to be some reason to discard C otherwise we have no reason to not accept it as the answer to a "MUST BE TRUE" question .

Thanks
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Some planning committee members—those representing the construction in  [#permalink]

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New post 27 Jul 2017, 04:55
kunal1608 wrote:
Hi Abhimahna,

I dont understand why C is incorrect at all. This is not a beauty contest like Sentence correction where we have to go for the best option.

This is Critical Reasoning, there HAS to be some reason to discard C otherwise we have no reason to not accept it as the answer to a "MUST BE TRUE" question .

Thanks


Hi kunal1608 ,

The argument has divided members of planning committee into two groups

Type 1. those representing the construction industry --> They have financial interests.
Type 2. Others.

Then it says, no one works in suburbs but many of them work there.

Now, it may happen that these "many" includes only the type 2 we discussed. How do you know "these" many must include type 1 as well?

Now, C is saying the same. It is saying some members of type 2 work in suburbs. But this can be false as well. Hence, incorrect.

Now, E is saying some members of type 1 donot live in suburbs. We are already told that no member live in suburbs. Hence, E must be true.

Does that make sense?
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Re: Some planning committee members—those representing the construction in  [#permalink]

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New post 27 Jul 2017, 05:01
abhimahna wrote:
kunal1608 wrote:
Hi Abhimahna,

I dont understand why C is incorrect at all. This is not a beauty contest like Sentence correction where we have to go for the best option.

This is Critical Reasoning, there HAS to be some reason to discard C otherwise we have no reason to not accept it as the answer to a "MUST BE TRUE" question .

Thanks


Hi kunal1608 ,

The argument has divided members of planning committee into two groups

Type 1. those representing the construction industry --> They have financial interests.
Type 2. Others.

Then it says, no one works in suburbs but many of them work there.

Now, it may happen that these "many" includes only the type 2 we discussed. How do you know "these" many must include type 1 as well?

Now, C is saying the same. It is saying some members of type 2 work in suburbs. But this can be false as well. Hence, incorrect.

Now, E is saying some members of type 1 donot live in suburbs. We are already told that no member live in suburbs. Hence, E must be true.

Does that make sense?


Yes, it does.

Is there an easier way to solve problems like these which have 3 pieces of information given. Maybe a Boolean logical expression ?


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Re: Some planning committee members—those representing the construction in  [#permalink]

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New post 25 Dec 2018, 11:20
Lets state the premises:

a) Some planning committee members—those representing the construction industry—have significant financial interests in the committee’s decisions.
PC members - construction have FI (financial interests). please note that this doesn't mean that PC members - non construction DOESN'T have FI nor people outside PC don't have FI)

b) No one who is on the planning committee lives in the suburbs, although many of them work there.
PC don't live in suburbs, but MANY (not MOST) work in suburb. where PC = PC - construction + PC - non construction

so essentially there are 3 groups
PC - constructions (these definitely have FI)
PC - non constrcution (these may or may not have FI)
non-PC (these may or may not have FI)


lets review the choices

(A) No persons with significant financial interests in the planning committee’s decisions are not in the construction industry. This says that only PC - construction have FI. PC - non construction and non-PC both can have FI.


(B) No person who has significant financial interest in the planning committee’s decisions lives in the suburbs.
IT IS A MUST BE CORRECT QUESTION. what about non-PC members (if non-PC members have FI, then its very well possible that non - PC folks live in suburb)

(C) Some persons with significant financial interests in the planning committee’s decisions work in the suburbs.
Remember it is a must be correct question. if we can show that there is a possibility that NONE of the persons with FI work in the suburb then we can eliminate this choice.
in premise b) it has been mentioned that MANY (NOT ALL) of PC work in suburb. PC - construction have FI. what if PC - non construction don't have FI and only PC - non construction work in suburbs. PC - construction live anywhere else but suburbs.


(D) Some planning committee members who represent the construction industry do not work in the suburbs.
this choice is similar to choice c. show the possibility that NONE of PC - construction work in suburb and this choice falls. this is exactly what we did in choice c

(E) Some persons with significant financial interests in the planning committee’s decisions do not live in the suburbs. this is the answer.
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Re: Some planning committee members—those representing the construction in   [#permalink] 25 Dec 2018, 11:20
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