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Does Z lie between X and Y?

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by sanjana » Wed Oct 14, 2009 10:22 pm
Distance between x and y is greater than distance between y and z.Does z lie between x and y on the number line?
a)xyz<0
b)xy<0

[spoiler]OA : A[/spoiler]
Last edited by sanjana on Thu Oct 15, 2009 10:25 pm, edited 1 time in total.
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Source: — Data Sufficiency |
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by mehravikas » Thu Oct 15, 2009 4:31 pm
you have not copied the question correctly. It says "distance between z and z"
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by sanjana » Thu Oct 15, 2009 10:25 pm
mehravikas wrote:you have not copied the question correctly. It says "distance between z and z"
Corrected,it should be between y and z.
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by life is a test » Thu Oct 15, 2009 10:31 pm
assuming you meant 'between x and z' I found the OA to be E on another forum. E does seem to be right.

pls double check.


a)insufficient since when xy<0 and z>0, z is not between x and y but when yz<0 and x>0, z is between x and y.

b)insufficient since no mention of z

a) and b) means z>0 which is insuff as follows

x----0---z---y = yes or y----0---z---x = yes or y----0---x---z = no.

not sure if this is the best way to approach in the exam though...anyone know a shorter/surer way of doing this??
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