if y>=0 what is the value of x?? 1)/x-3/>=y 2)/x-3/

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if y>=0 what is the value of x?? 1)/x-3/>=y 2)/x-3/ [#permalink]

10 Oct 2006, 13:35

if y>=0 what is the value of x??

1)/x-3/>=y

2)/x-3/ <= -y

Last edited by yezz on 10 Oct 2006, 14:44, edited 1 time in total.

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10 Oct 2006, 14:00

For me (B)

Stat 1:
|x-3| >= y > Infinite couples of (x,y) works here.

INSUFF

Stat 2:
|x^3| <= -y
Since, y >= 0 and an absolute value is always >= 0,

y is forced to be 0. Thus |x^3| = 0 and Thereby x=0.

SUFF

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10 Oct 2006, 14:15

Sorry Fig for wasting your efforts ......i edited my post plz try again :-D

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10 Oct 2006, 14:22

yezz wrote:

Sorry Fig for wasting your efforts ......i edited my post plz try again :-D

Would u clarify this one : 2)/x3/ <= -y ?

o /x3/ <= -y <=> |x*3| <= -y
or
o /x3/ <= -y <=> |x^3| <= -y
or
....

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15 Oct 2006, 12:27

Would love to know what the OA is and any explanation that accompanies it. My guess is E.

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15 Oct 2006, 13:12

if y>=0 what is the value of x??

1)/x-3/>=y

2)/x-3/ <= -y

from stem y is positive or zero else not

from one

/x-3/>=y thus /x-3/ > = 0 ie x>=3........it is a range thus insuff

from two

/x-3/ < = -y

we know as a concept /x-3/ is +ve

and from given y is positive or zero

thus -y can only be = zero

thus x-3 = 0 and x=3

answer is B

[#permalink] 15 Oct 2006, 13:12

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if y>=0 what is the value of x?? 1)/x-3/>=y 2)/x-3/

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if y>=0 what is the value of x?? 1)/x-3/>=y 2)/x-3/

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