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# Is X>Y? 1. x=y+2 2. x/2=y-1

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Senior Manager
Joined: 10 Mar 2008
Posts: 355
Is X>Y? 1. x=y+2 2. x/2=y-1 [#permalink]

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09 Aug 2008, 19:10
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Is X>Y?

1. x=y+2
2. x/2=y-1
SVP
Joined: 29 Aug 2007
Posts: 2467

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09 Aug 2008, 19:38
vksunder wrote:
Is X>Y?

1. x=y+2
2. x/2=y-1

A.

1: if x = y +2, x is always > y.

2: x/2 = y-1
x = 2y - 2

x could be >y or < y.
nsf
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Director
Joined: 10 Sep 2007
Posts: 934

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09 Aug 2008, 20:21
1) Sufficient.
2) May be case. x = 2Y - 2. y=1, x= 0 so x<y or y=10,x=18 x>y

VP
Joined: 17 Jun 2008
Posts: 1373

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10 Aug 2008, 05:05
vksunder wrote:
Is X>Y?

1. x=y+2
2. x/2=y-1

(1) x-2 >y => x>y always SUFFI
(2)x/2 +1 =y ycan be equal or less or greater than x

at x=2 ,y=x
at x=1 ,y>x
at x=3,y<x
INSUFFI

IMO A
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Director
Joined: 27 May 2008
Posts: 540

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10 Aug 2008, 09:04
1
KUDOS
vksunder wrote:
Is X>Y?

1. x=y+2
2. x/2=y-1

Q : yellow area
Statement 1 : blue line
statement 2 : red line

Attachment:

xylines.PNG [ 17.08 KiB | Viewed 1272 times ]
Senior Manager
Joined: 06 Apr 2008
Posts: 428

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10 Aug 2008, 09:09
vksunder wrote:
Is X>Y?

1. x=y+2
2. x/2=y-1

A)

For statement 2) y=0 and y =2 gives x<y and x>y
SVP
Joined: 07 Nov 2007
Posts: 1789
Location: New York

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12 Aug 2008, 07:05
durgesh79 wrote:
vksunder wrote:
Is X>Y?

1. x=y+2
2. x/2=y-1

Q : yellow area
Statement 1 : blue line
statement 2 : red line

Attachment:
xylines.PNG

Hi Durgesh,

How to draw the question line.?? can you elaborate
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Director
Joined: 27 May 2008
Posts: 540

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12 Aug 2008, 08:23
x2suresh wrote:

Hi Durgesh,

How to draw the question line.?? can you elaborate

draw x = y,

all the points to right of this line will satify x>y ...
how do we know that... well just take any point which is on the right side ... say (1,0) --- 1>0 true
take any point on the left side of line (-1,0) --- x is not greater than y -- false..
so our target area is all the points to the right of line x=y.

Last edited by durgesh79 on 12 Aug 2008, 09:00, edited 1 time in total.
Intern
Joined: 13 Aug 2008
Posts: 8

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13 Aug 2008, 03:40
good approach
Re: DS: Equalities   [#permalink] 13 Aug 2008, 03:40
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