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I am concerned with these two DSs. Pls discuss them

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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, 08:51
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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 109 times ]

OG 65 DS.JPG
OG 65 DS.JPG [ 7.96 KiB | Viewed 111 times ]

OG 65 DS.JPG
OG 65 DS.JPG [ 7.96 KiB | Viewed 110 times ]

Senior Manager
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 [#permalink] New post 12 Jul 2007, 09:30
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.
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 [#permalink] New post 12 Jul 2007, 09:38
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.
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 [#permalink] New post 14 Jul 2007, 00:48
Thank you, sumande :P

OAs:
65 - B;
125 - C.
  [#permalink] 14 Jul 2007, 00:48
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