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

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

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New post 25 Nov 2003, 09:53
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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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adarshsrinivas

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Re: DS - ABSOLUTE VALUES [#permalink]

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New post 25 Nov 2003, 09:57
adarshsrinivas wrote:
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!

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New post 25 Nov 2003, 11:08
don't we need some more info?

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New post 25 Nov 2003, 11:22
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]

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New post 25 Nov 2003, 11:34
agree with you, Titleist.
if this is the ques, then the ans should be E

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New post 25 Nov 2003, 20:15
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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New post 25 Nov 2003, 20:21
adarshsrinivas wrote:
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.

i hope i've answered your question.



cheers!

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New post 25 Nov 2003, 20:29
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.
adarsh
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  [#permalink] 25 Nov 2003, 20:29
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Is X Positve? 1. absolute value of X = absolute value of Y

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