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If S is a set of four numbers x, y, z and w, is the range of the numbe

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V
Joined: 02 Sep 2009
Posts: 52285
If S is a set of four numbers x, y, z and w, is the range of the numbe  [#permalink]

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New post 17 Apr 2017, 00:18
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

84% (01:16) correct 16% (01:27) wrong based on 63 sessions

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Joined: 04 Apr 2015
Posts: 107
Re: If S is a set of four numbers x, y, z and w, is the range of the numbe  [#permalink]

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New post 17 Apr 2017, 05:53
IMO E

First we dont know the sign of any numbers and also the sequence so I believe the answer should be E

Waiting for the OA.
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WE: Engineering (Energy and Utilities)
If S is a set of four numbers x, y, z and w, is the range of the numbe  [#permalink]

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New post 26 Apr 2017, 00:05
Option E

S = {x,y,z,w}. Range of S ?
To get range, highest element of S & least element of S should be known.

I: x - y > 2. No information about w & z.
Range could be >3 or <3. Insufficient.

II: w - z < 4. No information about x & y
Range could be >3 or <3. Insufficient.

I+II: x - y >2 & w - z <4.
No information about relative values of x & w/z or y & w/z. Insufficient.
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If S is a set of four numbers x, y, z and w, is the range of the numbe &nbs [#permalink] 26 Apr 2017, 00:05
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