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# Is |k| = 2? (1) k sqr = 4 (2) k = |-2| I need someone to

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Is |k| = 2? (1) k sqr = 4 (2) k = |-2| I need someone to [#permalink]  28 Apr 2010, 12:30
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Is |k| = 2?

(1) k sqr = 4
(2) k = |-2|

I need someone to explain me the concept of this problem. I am not fully confident. Gurpreet or Bunuel?
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Re: Is |k| = 2? need help [#permalink]  28 Apr 2010, 12:33
1. K sqr = 4 => k= +2 or -2 = |k| ??? Suff ?
2. k= |-2| = > |k| = 2 ?? Suff ?

Last edited by zz0vlb on 03 May 2010, 19:10, edited 1 time in total.
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Re: Is |k| = 2? need help [#permalink]  28 Apr 2010, 12:38
zz0vlb wrote:
Is |k| = 2?

(1) k sqr = 4
(2) k = |-2|

I need someone to explain me the concept of this problem. I am not fully confident. Gurpreet or Bunuel?

I'm not gurpreet or Bunuel, but still would like to try..!!

Question asks Is |k| = 2 >>> which means >>> Is k= 2,-2.
If the value of k is 2 or -2, the answer will "YES"

Statement 1:
k sqr = 4 means >>> k =2 or k=-2, In either case |k| = 2.

Statement 2:
k = |-2| = 2.
so k =2, so |k| = 2.

IMO its D.
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Re: Is |k| = 2? need help [#permalink]  29 Apr 2010, 08:44
nverma wrote:
zz0vlb wrote:
Is |k| = 2?

(1) k sqr = 4
(2) k = |-2|

I need someone to explain me the concept of this problem. I am not fully confident. Gurpreet or Bunuel?

I'm not gurpreet or Bunuel, but still would like to try..!!

Question asks Is |k| = 2 >>> which means >>> Is k= 2,-2.
If the value of k is 2 or -2, the answer will "YES"

Statement 1:
k sqr = 4 means >>> k =2 or k=-2, In either case |k| = 2.

Statement 2:
k = |-2| = 2.
so k =2, so |k| = 2.

IMO its D.

Statement 1:
k sqr = 4 means >>> k =2 or k=-2, Also k can be Root 4

NOT SUFF

Statement 2:
k = |-2| = 2.
so k =2, so |k| = 2.

SUFF

IMO B
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Re: Is |k| = 2? need help [#permalink]  30 Apr 2010, 09:01
chauhan2011 wrote:
nverma wrote:
zz0vlb wrote:
Is |k| = 2?

(1) k sqr = 4
(2) k = |-2|

I need someone to explain me the concept of this problem. I am not fully confident. Gurpreet or Bunuel?

I'm not gurpreet or Bunuel, but still would like to try..!!

Question asks Is |k| = 2 >>> which means >>> Is k= 2,-2.
If the value of k is 2 or -2, the answer will "YES"

Statement 1:
k sqr = 4 means >>> k =2 or k=-2, In either case |k| = 2.

Statement 2:
k = |-2| = 2.
so k =2, so |k| = 2.

IMO its D.

Statement 1:
k sqr = 4 means >>> k =2 or k=-2, Also k can be Root 4

NOT SUFF

Statement 2:
k = |-2| = 2.
so k =2, so |k| = 2.

SUFF

IMO B

D for sure. The question is about |k|, root 4 =2. k=2 or -2 <=> k square=4 <=> |k|=2

ksquare=4 doesn't mean k can be root 4
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Re: Is |k| = 2? need help [#permalink]  03 May 2010, 19:30
+1 D

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Re: Is |k| = 2? need help   [#permalink] 03 May 2010, 19:30
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