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# CR on Steroids

Author Message
Senior Manager
Affiliations: UWC
Joined: 09 May 2012
Posts: 393
GMAT 1: 620 Q42 V33
GMAT 2: 680 Q44 V38
GPA: 3.43
WE: Engineering (Entertainment and Sports)
Followers: 31

Kudos [?]: 1281 [0], given: 100

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07 Jun 2012, 01:52
And you thought CR was hard:

Attachment:

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[Reveal] Spoiler:
39A : C
39B : A
Manager
Joined: 19 Mar 2012
Posts: 172
Location: United States
Concentration: Finance, General Management
GMAT 1: 750 Q50 V42
GPA: 3.69
WE: Analyst (Mutual Funds and Brokerage)
Followers: 7

Kudos [?]: 50 [0], given: 13

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07 Jun 2012, 07:46
Here's how I approached it:

First, a two second summary of archaeologist claim: Because porcelain cups have unique compositions, archaeologists can use composition analysis to determine where the next discovered cup comes from.

So looking at the statements, I try to eliminate the statements that do not support the archaeologist's claim:
a) RELEVANT: Says that they have previous porcelain cups, so these are the cups that they could use for their composition analysis
b) ELIMINATE: Cups that are not made of porcelain do not support his claim
c) RELEVANT: The next cup has to be porcelain, archaeologist only talks about identifying cups that are porcelain
d) ELIMINATE: Hurts archaeologist claim because it introduces reasoning to why composition analysis might not lead to correct origin of cup
e) ELIMINATE: Hurts archaeologist claim because composition analysis might not point to correct origin if two origins produce the same type of composition
f) ELIMINATE: Seems like irrelevant information

So between A and C, it's not too hard to tell which one is the archaeologist assumptions and which one is possible fact. The archaeologist is assuming that they can find out where the next cup comes from because the next cup will be porcelain, and they can use composition analysis. The fact that all of the cups they have previously found were porcelain strengthens the assumption that the next one will be porcelain as well.

If you reversed it, and said that the assumption is all of the past cups found were porcelain, the possible fact that the next one will be porcelain does nothing to strengthen your assumption.
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Joined: 02 Jul 2012
Posts: 1223
Location: India
Concentration: Strategy
GMAT 1: 740 Q49 V42
GPA: 3.8
WE: Engineering (Energy and Utilities)
Followers: 124

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04 Oct 2012, 04:30
The question seems quite straightforward.
Conclusion is that the origin of the next cup discovered can be easily determined.
Going through the answer choices we can find that the argument clearly assumes that the next cup to be discovered would be made of porcelain. Although we can also apply the LEN method : The next cup to be discovered need not be porcelain. This clearly kills the argument. So "C" is the right answer.
Now we have to select a choice which as a fact could strengthen the assumption. We can see that choice "A" clearly strengthens this assumption.
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Re: CR on Steroids   [#permalink] 04 Oct 2012, 04:30
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