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Is x y > r s? (1) x > r and y < s? (2) y = 2, s =

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Director
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Is x y > r s? (1) x > r and y < s? (2) y = 2, s = [#permalink] New post 30 Mar 2007, 02:30
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Is x – y > r – s?

(1) x > r and y < s?
(2) y = 2, s = 3, r = 5, and x = 6.

Can we use (1) also to answer the question?
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 [#permalink] New post 30 Mar 2007, 02:43
Should be 'B'.

Statement 1: x>r and r<s>r but we don't know about y. y can be anything. So x-y can be any value.
So we can't say that x-y >r-s. So INSUFF

Statement B : Just put the numbers. It leads to x-y > r-s hence SUFF
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 [#permalink] New post 30 Mar 2007, 03:23
(D) for me :)

x – y > r – s?

From 1
As:
o x>r <=> x - r > 0
o y < s <=> y - s < 0

We have
=> x - r > 0 > y - s
<=> x - r > y - s
<=> x - y > r - s

SUFF.

From 2
We have all the values, thus we can conclude. :)

SUFF.
  [#permalink] 30 Mar 2007, 03:23
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Is x y > r s? (1) x > r and y < s? (2) y = 2, s =

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