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# GMATClub is a forum where people can participate in GMAT

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Director
Joined: 29 Oct 2004
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GMATClub is a forum where people can participate in GMAT [#permalink]

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16 Jan 2005, 05:10
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GMATClub is a forum where people can participate in GMAT discussion. The forum is either doing well or badly, a status that totally depends on the activity in the forum. A group of GMATClub forum's members discovered that if Paul appears and actively posts messages, the forum discussion goes well. The members also found out that whenever Prae shows up to post messages, Paul is completely absent from the forum.

If the above statements are true, which of the following must also be true?

(A) If Prae does not show up, Paul must be actively posting messages.
(B) The appearence of Prae in the forum is sufficient for Paul to be actively posting messages.
(C) Either Paul's appearence is necessary for Prae to post messages or Prae's appearence causes the forum discussion to go badly.
(D) Prae's appearence is necessary for Paul's appearence.
(E) Prae shows up to post messages only if Paul appears.
If you have any questions
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CEO
Joined: 15 Aug 2003
Posts: 3460
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16 Jan 2005, 11:57
<cough> conspiracy theories

I dont like option C.
Director
Joined: 25 Jan 2004
Posts: 728
Location: Milwaukee
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16 Jan 2005, 17:30
I am amazed with your creativity.

C)

Lets make one more statement, less flooding by people, more focussed discussions make the forum go well.
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Praveen

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Joined: 21 Sep 2004
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16 Jan 2005, 20:39
I cannot believe that somebody can make up such awesome questions..
C..
Director
Joined: 05 Jan 2005
Posts: 560
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17 Jan 2005, 02:48
I don't like C either. I'll choose D if it were match day! Strange, but i'll do so and move on.
Director
Joined: 29 Oct 2004
Posts: 863
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17 Jan 2005, 05:46

GMATClub is a forum where people can participate in GMAT discussion. The forum is either doing well or badly, a status that totally depends on the activity in the forum. A group of GMATClub forum's members discovered that if Paul appears and actively posts messages, the forum discussion goes well. The members also found out that whenever Prae shows up to post messages, Paul is completely absent from the forum.

If the above statements are true, which of the following must also be true?

(A) If Prae does not show up, Paul must be actively posting messages.
(B) The appearence of Prae in the forum is sufficient for Paul to be actively posting messages.
(C) Either Paul's appearence is necessary for Prae to post messages or Prae's appearence causes the forum discussion to go badly.
(D) Prae's appearence is necessary for Paul's appearence.
(E) Prae shows up to post messages only if Paul appears.

Here is the OA.

Let
A = Paul appears and actively posts messages
B = forum discussion goes well
C = Prae shows up to post messages
~A = Paul is completely absent
~B = forum discussion to go badly
~C = Prae does not show up

According to the stem
A->B
C->~A

(A) If Prae does not show up, Paul must be actively posting messages.
~C -> A
conflict

(B) The appearence of Prae in the forum is sufficient for Paul to be actively posting messages.
C is sufficient for A
conflict

(C) Either Paul's appearence is necessary for Prae to post messages or Prae's appearence causes the forum discussion to go badly.
(A is necessary for C) OR (C -> ~B)
FALSE or TRUE = TRUE
correct

(D) Prae's appearence is necessary for Paul's appearence.
C is necessary for A
conflict

(E) Prae shows up to post messages only if Paul appears.
C only if A
conflict
GMAT Club Legend
Joined: 15 Dec 2003
Posts: 4302
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17 Jan 2005, 10:58
Keep up the good work qhoc
_________________

Best Regards,

Paul

Director
Joined: 03 Nov 2004
Posts: 865
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17 Jan 2005, 11:27
qhoc0010, it is high time you contacted the folks at ETS, keep up the good work
Director
Joined: 29 Oct 2004
Posts: 863
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17 Jan 2005, 12:43
Well, at least my made-up question is more relevant than Crack GMAT huh?
Director
Joined: 19 Nov 2004
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Location: SF Bay Area, USA
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17 Jan 2005, 14:34
qhoc0010 I accept you as my CR Guru!!
Keep it up!
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