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# Rats are generally more active than mice. But since gerbils

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Manager
Joined: 20 Oct 2004
Posts: 123
Rats are generally more active than mice. But since gerbils [#permalink]

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03 Jan 2005, 18:57
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Rats are generally more active than mice. But since gerbils are generally more active than hamsters, it follows that rats are generally more active than hamsters.

Any of the following, if introduced into the argument as an additional premise, makes the argument above logically correct EXCEPT:

A. Gerbils are generally more active than rats
B. Mice are generally more active than hamsters
C. Mice are generally more active than gerbils
D. Mice and gerbils are generally equally active
E. Rats and gerbils are generally equally active
Director
Joined: 07 Nov 2004
Posts: 683

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03 Jan 2005, 19:34
Pick A.

Given R>M; G>H =>R>H
a)G>R does not necessarily imply R>H
b) M>H => R>M>H
c) M>G => R>M>G>H
d) M=G => M>H => R>H
e) R=G => R>H
Director
Joined: 27 Dec 2004
Posts: 897

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03 Jan 2005, 20:06
gayathri wrote:
Pick A.

Given R>M; G>H =>R>H
a)G>R does not necessarily imply R>H
b) M>H => R>M>H
c) M>G => R>M>G>H
d) M=G => M>H => R>H
e) R=G => R>H

Gayathri, can you please further explain how to tackle this kind of questions? I generally have a problem understanding how to attack this problem even after reading it from the OG and seeing the OA.
Director
Joined: 07 Nov 2004
Posts: 683

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03 Jan 2005, 21:19
Folaa3 wrote:
Gayathri, can you please further explain how to tackle this kind of questions? I generally have a problem understanding how to attack this problem even after reading it from the OG and seeing the OA.

Folaa3, look at the post below which is a discussion of the OG question.
http://www.gmatclub.com/phpbb/viewtopic.php?t=12458&highlight=kale

let me know if that was useful...
Senior Manager
Joined: 03 Nov 2004
Posts: 485

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03 Jan 2005, 23:07
A here as well. D and E strenghten the arguement. good xplnation gayathri
Manager
Joined: 20 Oct 2004
Posts: 123

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03 Jan 2005, 23:30
Good job everyone. OA is A.
03 Jan 2005, 23:30
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