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All of John s friends say they know someone who has smoked

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Re: LSAT test VI [#permalink]

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New post 22 Sep 2010, 20:16
I went for D, but I guess E would be stronger to make John not unique. Thanks
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Re: LSAT test VI [#permalink]

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New post 01 Oct 2010, 14:29
E seems more reasonable than D, because for John not to be unique amongst his friends only one needs to not be telling the truth (i.e. "Some" is more reasonable than the more extreme "Most"). . .so E.
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Re: LSAT test VI [#permalink]

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New post 03 Dec 2010, 08:40
I don't fully understand the difference b/n some and most. Some could mean half, less than half or more than half most means definitely more than half. Am I right? And if that is the case how would one be able to tell the difference between the two choices? :roll:
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Re: LSAT test VI [#permalink]

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New post 03 Dec 2010, 12:51
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mariyea wrote:
I don't fully understand the difference b/n some and most. Some could mean half, less than half or more than half most means definitely more than half. Am I right? And if that is the case how would one be able to tell the difference between the two choices? :roll:


Some means 'at least 1'.
Most means 'greatest quantity'.
e.g. He got the most votes.
If there were 3 people, he could have had 40 votes. So it isn't necessarily more than half. Just 'any majority'.
Most of his friends would imply more than 50% since there will be two groups only - his friends who are telling the truth and his friends who are not telling the truth.

We can say that at least 1 of his friends is lying (so that he is not unique). There is no reason to say that more than 50% of his friends are lying.
Though, ambiguous question according to GMAT standards. I wouldn't worry about it.
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Re: LSAT test VI [#permalink]

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New post 03 Dec 2010, 17:04
vaivish1723 wrote:
All of John’s friends say they know someone who has smoked 40 cigarettes a day for the past 40 years and yet who is really fit and well. John does not know anyone like that and it is quite certain that he is not unique among his friends in this respect.
If the statements in the passage are true, then which one of the following must also be true?
(A) Smokers often lie about how much they smoke. the question has nothing to do about smokers lying but more about John's friends
(B) People often knowingly exaggerate without intending to lie. we can deduce this from the argument
(C) All John’s friends know the same lifelong heavy smoker. no in fact this is counter to the stmt which mentions John is quite certain he is not unique among his friends in this respect
(D) Most of John’s friends are not telling the truth. we don't know how many of his friends are telling the truth or not
(E) Some of John’s friends are not telling the truth.correct at least one friend (which qualifies as some) is not telling the truth

Oa is
[Reveal] Spoiler:
e


Why cant c be OA?
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Re: LSAT test VI [#permalink]

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New post 06 Dec 2010, 06:34
VeritasPrepKarishma wrote:
mariyea wrote:
I don't fully understand the difference b/n some and most. Some could mean half, less than half or more than half most means definitely more than half. Am I right? And if that is the case how would one be able to tell the difference between the two choices? :roll:


Some means 'at least 1'.
Most means 'greatest quantity'.
e.g. He got the most votes.
If there were 3 people, he could have had 40 votes. So it isn't necessarily more than half. Just 'any majority'.
Most of his friends would imply more than 50% since there will be two groups only - his friends who are telling the truth and his friends who are not telling the truth.

We can say that at least 1 of his friends is lying (so that he is not unique). There is no reason to say that more than 50% of his friends are lying.
Though, ambiguous question according to GMAT standards. I wouldn't worry about it.


That was very helpful Karishma! Thank you :)
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Re: LSAT test VI [#permalink]

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New post 04 May 2011, 04:16
'he is not unique among his friends in this respect.' this statement is the difference between D and E .D can not be inferred from this statement alone , 'most' of john's friends don't have to be different from john to make him 'not unique'.

if only 1 friend is like him , than he is not unique .hence E
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Re: LSAT test VI [#permalink]

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New post 05 May 2011, 08:21
In the group there are some more people apart from John who also don't know such a person.
Thus E fits in perfectly.
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Re: LSAT test VI [#permalink]

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New post 22 Jul 2011, 17:50
That was a toughie. I will go with E though.
S1: ALL of John's friends know someone who smokes 40cigs a day and is fit.
S2: John does not anyone like that AND is CERTAIN that he is not alone among his friends in that aspect.

This implies that there are some friends who are lying. Otherwise John would not be CERTAIN that he is not alone.
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Re: LSAT test VI [#permalink]

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New post 23 Jul 2011, 13:54
I chose E because at first All of John's friends know someone who smokes 40 cigs a day and so on. But John is NOT unique. Keyword is unique..meaning some of his friends are also in the same position as John. Since *some* of his friends are in the same position as John then that means *some of his friends are lying*
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Re: LSAT test VI [#permalink]

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New post 23 Jul 2011, 21:28
+ 1 E
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Re: LSAT test VI [#permalink]

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New post 24 Jul 2011, 08:55
Good One... Nice Explanation
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Re: All of John s friends say they know someone who has smoked [#permalink]

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Re: All of John s friends say they know someone who has smoked [#permalink]

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New post 12 Jul 2016, 23:45
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All of John’s friends say they know someone who has smoked 40 cigarettes a day for the past 40 years and yet who is really fit and well. John does not know anyone like that and it is quite certain that he is not unique among his friends in this respect.
If the statements in the passage are true, then which one of the following must also be true?
(A) Smokers often lie about how much they smoke. ........>Could be true
(B) People often knowingly exaggerate without intending to lie. .......>outside the scope of the fact sets
(C) All John’s friends know the same lifelong heavy smoker. .....>the statement must be false since some of John's friends don't know about the smoker(According to the highlighted portion of the sentence,he is not unique=some of his friends still in his situation of not knowing ),but the question asked about must be true answer choice.
(D) Most of John’s friends are not telling the truth. ........Could be true because most of John's friends may not know the fact of the smoker
(E) Some of John’s friends are not telling the truth. ......> some of John’s friends= means at-least one of John's friends.information must be true as the fact

Correct Answer E
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Re: All of John s friends say they know someone who has smoked [#permalink]

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New post 24 Jul 2016, 07:45
vaivish1723 wrote:
All of John’s friends say they know someone who has smoked 40 cigarettes a day for the past 40 years and yet who is really fit and well. John does not know anyone like that and it is quite certain that he is not unique among his friends in this respect.
If the statements in the passage are true, then which one of the following must also be true?
(A) Smokers often lie about how much they smoke.
(B) People often knowingly exaggerate without intending to lie.
(C) All John’s friends know the same lifelong heavy smoker.
(D) Most of John’s friends are not telling the truth.
(E) Some of John’s friends are not telling the truth.

Oa is
[Reveal] Spoiler:
e


Why cant c be OA?


This is a very bad, incorrect and third rate question.
No one who has an iota of knowledge of Logic or reasoning would make such a question.

For all logic and critical reasoning , there is no difference in "Most/many/some/not all".
In logic ---> 1=some=many=99= not all
In logic ---> 0 = None
In logic ---> 100 = all

Therefore answer D and E are both correct.
A GMAT question cannot have 2 correct answers.


Remember quantifier like all, not all , some, many and none have different meaning in logic than in English.
Quantifiers in Logic are more similar to mathematical symbolism and has a close relationship with set theory. such as Union, intersection, null set and so on.

THIS IS A BLATANTLY WRONG QUESTION AND SHOULD BE DELETED WITHOUT GIVING IT A SECOND THOUGHT.

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Re: All of John s friends say they know someone who has smoked   [#permalink] 24 Jul 2016, 07:45

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