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I am concerned with these two DSs. Pls discuss them

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Director
Director
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Joined: 19 Mar 2007
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I am concerned with these two DSs. Pls discuss them [#permalink] New post 12 Jul 2007, 07:51
00:00
A
B
C
D
E

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(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
I am concerned with these two DSs. Pls discuss them.
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OG 125 DS.JPG
OG 125 DS.JPG [ 5.29 KiB | Viewed 277 times ]

OG 65 DS.JPG
OG 65 DS.JPG [ 7.96 KiB | Viewed 279 times ]

OG 65 DS.JPG
OG 65 DS.JPG [ 7.96 KiB | Viewed 278 times ]

Senior Manager
Senior Manager
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Joined: 04 Jun 2007
Posts: 350
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GMAT Tests User
 [#permalink] New post 12 Jul 2007, 08:30
OG 65 DS:

Stmt 1: Insufficient.
m=2; m/2=1 is NOT an even integer.
m=3; m/2=1.5 is NOT an even integer.

Stmt 2: Sufficient.
if m - 3 is even, then m must be odd.

Hence, B.
Senior Manager
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Joined: 04 Jun 2007
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 [#permalink] New post 12 Jul 2007, 08:38
OG 125 DS:

Stmt 1: Insufficient.
n=2; z can be -1 or 1.

Stmt 2: Insufficient.
if n=0, z can be any value > 0.

Both statements together makes z=1. Hence, sufficient.

Answer C.
Director
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 [#permalink] New post 13 Jul 2007, 23:48
Thank you, sumande :P

OAs:
65 - B;
125 - C.
  [#permalink] 13 Jul 2007, 23:48
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I am concerned with these two DSs. Pls discuss them

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