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# Is X Positve? 1. absolute value of X = absolute value of Y

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Intern
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Is X Positve? 1. absolute value of X = absolute value of Y [#permalink]  25 Nov 2003, 08:53
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Is X Positve?

1. absolute value of X = absolute value of Y

2. X = - Y

I THINK THE ANSWER IS b.
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Manager
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Re: DS - ABSOLUTE VALUES [#permalink]  25 Nov 2003, 08:57
Is X Positve?

1. absolute value of X = absolute value of Y

2. X = - Y

I THINK THE ANSWER IS b.

How can you tell without knowing anything about Y!
Director
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Director
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is X positive?

1. |x|=|y| insufficient we don't know the value of y

2. x=-y insufficient do a few scenarios

X = -y

-3=-(3) no x is negative
3=-(-3) yes x is positive
INSUFFICIENT

Together? hmmm.

|X| = |Y|

|3| = |-3| x is positive

|-3| = |3| x is negative

Answer is E both are insufficient

[/quote]
Director
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agree with you, Titleist.
if this is the ques, then the ans should be E
Intern
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yup E is the answer .....spot on titleist!!!!!

just had a another doubt ........ if x= -y ......then the y can take a positive as well as negative value is it ? .........uve taken 3 and -3

cheers
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Director
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Re: e [#permalink]  25 Nov 2003, 19:21
yup E is the answer .....spot on titleist!!!!!

just had a another doubt ........ if x= -y ......then the y can take a positive as well as negative value is it ? .........uve taken 3 and -3

cheers

yes, y can be either positive or negative thus effecting the sign of x.

if y =3, then x=-3
if y=-3, then x=3

I just used 3 but, of course, you can use any number (doesn't even have to be an integer, according to the problem) you want.

cheers!
Intern
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hi ,
thanks you ve been really helpfull.....it has ansd my question.....il definitely post some more problems like this one for you to crack.
_________________

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