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Source: — Data Sufficiency |

by raleigh » Wed Jun 10, 2009 10:31 am
What does <> mean?
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by david2008 » Wed Jun 10, 2009 11:34 am
presume <> means not equal

I would say:

I) not sufficient as it works for both x=0 and x=4
II) not sufficient as x can be any number but 3

together not sufficient because still x=0 and x=4 works

I would go with E

OA?
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by mehravikas » Wed Jun 10, 2009 11:04 pm
IMO - E
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by ketkoag » Thu Jun 11, 2009 4:53 am
raleigh wrote:What does <> mean?
<> means that the expression is greater than 0 or less than 0 but not equal to 0. :)
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by tohellandback » Thu Jun 11, 2009 6:36 am
IMO E

1)|x+1| < 2|x-1|
squaring both side and finding the roots of the quadratic eq
(x-2/3)(x-8/3)>0
X<2/3 or X>8/3 NOT SUFF

2)xnot equal to 3 -NOT SUFF
combining both NOT SUFF
The powers of two are bloody impolite!!
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