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Are positive integers P and Q both greater than n? 1.P-Q is

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Manager
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Are positive integers P and Q both greater than n? 1.P-Q is [#permalink] New post 08 Jul 2007, 13:26
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Are positive integers P and Q both greater than n?
1.P-Q is grrater than N
2.Q>P

Please explain
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 [#permalink] New post 08 Jul 2007, 13:42
P-Q> N
tells us that P must be greater than N but nothing about Q

Q>P
alone tells us nothing.

Both together: P-Q<0>N: so N must be negative: N<P-Q<0
But P and Q are positive:
N<P<Q![/quote]
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 [#permalink] New post 09 Jul 2007, 16:06
Let P=15, q=5

1.P-Q is grrater than N:

=10 and if N=9; this hold true. what if N=11..IT BOMBS

2.Q>P

= No info given abut N

Combine: P=5 Q=15

P-Q is always gonna be negative as P-Q. So, C
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 [#permalink] New post 09 Jul 2007, 17:07
St1:
Insufficient. P could be very small (smaller than N) and P could be very big, so P-Q > N.

St2:
Doesnt'tells us relationship with N. Insufficient.

Using both, nothing new is made known.
P-Q is negative, since P-Q > N, N must be negative. So P and Q > N.

Ans C
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Re: GmatPrep DS [#permalink] New post 09 Jul 2007, 18:13
dreamgmat1 wrote:
Are positive integers P and Q both greater than n?
1.P-Q is grrater than N
2.Q>P



(1) Pick P=5, Q=1, N=3, then: P-Q>N, but Q is <N>N, AND Q is > N.
Insuf.

(2) Insuf.

(1&2) P-Q>N and P-Q<0, thus N<0>N and the answer is C.
Re: GmatPrep DS   [#permalink] 09 Jul 2007, 18:13
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