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Senior Manager
Joined: 02 Sep 2006
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Is |a| > |b|? (1) b < -a (2) a < 0 [#permalink]
23 Mar 2007, 22:18
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0% (00:00) correct
0% (00:00) wrong based on 0 sessions
Is |a| > |b|?
(1) b < -a
(2) a < 0
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Manager
Joined: 16 Dec 2005
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St 1 :
if a is a +ve number. mod. b > mod. a
But if a is a -ve number ...-a will be positive
so b< -a can be any number less than the positive integer -a ..i.e can be number between -a and +a and also beyond +a (i.e -ve ) ...so mod b can be less than or greater than mod a .
st 2 ..by itself isn't enough
Combining 1,2 ----Gives only that a is -ve..the exact range in which b lies viz., if it is between 0 and a (-ve value ) or is still lesser than a .
So E
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Senior Manager
Joined: 20 Feb 2007
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Answer is E.
What is OA?
I just drew a number line and picked the numbers....
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Director
Joined: 14 Jan 2007
Posts: 787
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IMO the answer is 'E',
take numbers a = -3, b=-4 these satisfy b< -a and a<0> |a| < |b|
now take a=-3, b =1, satisfy b<-a and a<0> |a| > |b|.
Hence both the stmts taken together are not suff.
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