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ds P+Q

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CEO
Joined: 21 Jan 2007
Posts: 2739
Location: New York City

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25 Nov 2007, 04:56
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Is P+Q > r+s?

1. q > r+s
2. p > r+s
Director
Joined: 09 Aug 2006
Posts: 755
Re: ds P+Q [#permalink]

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25 Nov 2007, 06:22
bmwhype2 wrote:
Is P+Q > r+s?

1. q > r+s
2. p > r+s

I'm getting E.

stat 1: Don't know the value of P. Insuff.

stat 2: Don't know the value of Q. Insuff.

Together: Answer is yes if p, q, r, s are positive integers. Answer can be no if p, q, r, s are negative fractions.

Eg:
p = 4, q = 4, r+s = 3; answer is yes.
p = -.7, q = -.5; r+s = -1; answer is no.
Insuff.
Re: ds P+Q   [#permalink] 25 Nov 2007, 06:22
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