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Re: mgmat: what is x? [#permalink]
21 Jun 2008, 19:04

gmatnub wrote:

What is x?

(1) |x| < 2

(2) |x| = 3x – 2

Statement 1, -2<x<2 no specific value for x; therefore, insufficient Statement 2, x=1 or 1/2 no specific value for x; therefore, insufficient Together, still cannot find a single value, insufficient Answer should be E

Re: mgmat: what is x? [#permalink]
22 Jun 2008, 17:50

I still don't quite understand the explanation...... When we equate for x<0, its just a substitution and any value we get from it is the ans .... irrespective of whether its +ve or -ve

Re: mgmat: what is x? [#permalink]
23 Jun 2008, 12:17

if x=1/2 were a solution then it would satify the equation.right? Then why dont you check whether it satifies the eqn?

saurabhkowley18 wrote:

I still don't quite understand the explanation...... When we equate for x<0, its just a substitution and any value we get from it is the ans .... irrespective of whether its +ve or -ve

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