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x, y, z are numbers on the number line. Is x < y < z ?

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Manager
Joined: 04 Sep 2006
Posts: 113
x, y, z are numbers on the number line. Is x < y < z ? [#permalink]

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27 Jun 2009, 23:09
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x, y, z are numbers on the number line. Is x < y < z ?
1). |y-x| + |y-z| = |z-x|
2). x<z

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Manager
Joined: 28 Jan 2004
Posts: 201
Location: India

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28 Jun 2009, 18:54
Looks to me that A is suff.
Will explain once i see the OA
Manager
Joined: 28 Jan 2004
Posts: 201
Location: India

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28 Jun 2009, 19:02
Using 1 i could have also deduced that z<y<x
however stmt. 2 by saying that x<y makes sure that x<y<z.

As per stmt 1 , distance of y from x + distance of y from x = distance of z from x.
This stmt tells us that y is between x and z.But we can not tell if x is to the right of y or z is to the right of y.
This answer comes from smt 2.

graphically stmt 1 can be shown as

X----------Y---------------Z
or
Z----------Y----------------X

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
Re: inequality & modulus   [#permalink] 28 Jun 2009, 19:02
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