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Distance

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by tanyajoseph » Mon Aug 13, 2007 12:58 pm
On the no line, the ditance between x and y is greater than the distance between x and z. DOes z lie between x and y on the no line?

1. xyz <0
2. xy <0

How do u end up solving such problems???
Ans is E.
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Source: — Data Sufficiency |

Re: Distance

by bingojohn » Mon Aug 13, 2007 1:22 pm
tanyajoseph wrote:On the no line, the ditance between x and y is greater than the distance between x and z. DOes z lie between x and y on the no line?

1. xyz <0
2. xy <0

How do u end up solving such problems???
Ans is E.
Visualize the number line.

Assume y is on the left of x. z could be on either side of x (left or right) and still satisfy the distance condition.

Assume y is on the right of x. Again, z could be on either side of x (left or right) and still satisfy the distance condition.

Hence, it doesn't seem to matter if x y or z are negative or positive.

Statement (1) and (2) both attempt at providing some information about which of these three points could be on the left of the origin (negative).

Answer [E].
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