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# Archaeologist: A skeleton of a North American mastodon that

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Senior Manager
Joined: 10 Dec 2008
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Archaeologist: A skeleton of a North American mastodon that [#permalink]  05 Jun 2009, 07:54
00:00

Difficulty:

5% (low)

Question Stats:

22% (02:24) correct 77% (00:53) wrong based on 9 sessions
5. Archaeologist: A skeleton of a North American
mastodon that became extinct at the peak of the
Ice Age was recently discovered. It contains a
human-made projectile dissimilar to any found
in that part of Eurasia closest to North America.
Thus, since Eurasians did not settle in North
America until shortly before the peak of the Ice
Age, the first Eurasian settlers in North America
probably came from a more distant part of
Eurasia.
Which one of the following, if true, most seriously
weakens the archaeologist’s argument?
(A) The projectile found in the mastodon does not
resemble any that were used in Eurasia before
or during the Ice Age.
(B) The people who occupied the Eurasian area
closest to North America remained nomadic
throughout the Ice Age.
(C) The skeleton of a bear from the same place and
time as the mastodon skeleton contains a
similar projectile.
(D) Other North American artifacts from the peak of
the Ice Age are similar to ones from the same
time found in more distant parts of Eurasia.
(E) Climatic conditions in North America just
before the Ice Age were more conducive to
human habitation than were those in the part
of Eurasia closest to North America at that
time.
Director
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Kudos [?]: 156 [0], given: 106

Re: Projectile Weaken Question [#permalink]  05 Jun 2009, 10:20
IMO A..

what is the source of these CRs?
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Senior Manager
Joined: 10 Dec 2008
Posts: 484
Location: United States
GMAT 1: 760 Q49 V44
GPA: 3.9
Followers: 21

Kudos [?]: 95 [0], given: 12

Re: Projectile Weaken Question [#permalink]  05 Jun 2009, 10:47
Powerscore LSAT Logical Reasoning Bible... I use them because they are much harder than normal ones...
Director
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Kudos [?]: 156 [0], given: 106

Re: Projectile Weaken Question [#permalink]  05 Jun 2009, 11:29
Premises 1) A skeleton of a North American
mastodon that became extinct at the peak of the
Ice Age
was recently discovered. It contains a
human-made projectile dissimilar to any found
in that part of Eurasia closest to North America.

Premises 2) Eurasians did not settle in North
America until shortly before the peak of the Ice
Age

Conclusion
the first Eurasian settlers in North America
probably came from a more distant part of
Eurasia

try to pre-phase:
Weakens the argument:
Prove that it was not Eurasian from distant who came first to settle in north america.

Used POE:

A) Projectile do not belong to any eurasian ( close or distant) ==> good. Lets see other points
C) Out of scope (bear..)
D) Strengthens not weakens the argument
E) Out of scope (climeatic conditions not relevant)

Thanks for these questions, it seems time consuming. Wats the OA?

How much time does LSAT gives for each question? Like In gmat it varies from 1.75 to 2.5 min depending on complexity.
_________________

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My debrief : journey-670-to-720-q50-v36-long-85083.html

Senior Manager
Joined: 10 Dec 2008
Posts: 484
Location: United States
GMAT 1: 760 Q49 V44
GPA: 3.9
Followers: 21

Kudos [?]: 95 [0], given: 12

Re: Projectile Weaken Question [#permalink]  05 Jun 2009, 18:31
OA is A. What does POE stand for? Lsat gives 35 minutes to answer around 24 CR questions, so its not THAT much time, but still doable.
Director
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Re: Projectile Weaken Question [#permalink]  05 Jun 2009, 20:18
bipolarbear wrote:
OA is A. What does POE stand for? Lsat gives 35 minutes to answer around 24 CR questions, so its not THAT much time, but still doable.

POE or PCOE : Process of elimination
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Re: Projectile Weaken Question [#permalink]  13 Aug 2009, 04:30
This ques. is a toughie..its there in GMAT CR BIBLE
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Re: Projectile Weaken Question [#permalink]  09 Jul 2011, 10:39
A.

It took me time to understand the argument. Hence, I strongly leveraged the POE.

B. INCORRECT - no mention of the projectile
C. INCORRECT - irrelevant - no connection to the mastodon
D. INCORRECT - irrelevant information
E. INCORRECT - irrelevant information
Manager
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Re: Projectile Weaken Question [#permalink]  09 Jul 2011, 10:58
I will try to paraphrase the argument:

Evidence 1: skeleton found in north america, dated peak of ice age, contains certain projectile
Evidence 2: projectile is not similar to the one found in the part of eurasia close to north america
Evidence 3: eurasians migrated to north america just before peak of ice age

Conclusion: projectile must have come from the farther part of eurasia

Assumption: that projectile can only come from eurasia and not from any other country

Answer A best weakens the assumption.
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Re: Archaeologist: A skeleton of a North American mastodon that [#permalink]  11 Jun 2012, 07:19
Hmm..This one's a toughie.

Thanks for the explanations. I was also stuck between A and B but could not understand the choice A completely and marked B in 2 mins
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Re: Archaeologist: A skeleton of a North American mastodon that   [#permalink] 11 Jun 2012, 07:19
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