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If -10 < k < 10, is K > 0 ?" (1) k.k > 4 (2) 1 -

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Senior Manager
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If -10 < k < 10, is K > 0 ?" (1) k.k > 4 (2) 1 - [#permalink] New post 02 Mar 2004, 09:38
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A
B
C
D
E

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"If -10 < k < 10, is K > 0 ?"

(1) k.k > 4

(2) 1 - k > 0


Vivek.

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 [#permalink] New post 02 Mar 2004, 11:27
E?

Quote:
(1) k.k > 4


do you mean k*k? I'm a bit confused with "k.k" If you mean k*k then this statement is insufficient.

Statement 2 is also insufficient. All we know is that k < 1. We don't know if it's greater than 0.
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C is the answer.. [#permalink] New post 02 Mar 2004, 12:15
Put all the conditions on a number line and you will see that C is the answer.
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 [#permalink] New post 02 Mar 2004, 13:48
I agree with mantha that C is the answer. K^2>4 so 10 >K>2 and
-2>K>-10 so A is insufficient. Statement B) 1-K>0 so -10<K<1 so B is also insufficient.
From both statements A) and B) follows that -10< K<-2. Then C) should be the answer, IMO
  [#permalink] 02 Mar 2004, 13:48
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