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IS X < Y???

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IS X < Y???

by bhumika.k.shah » Wed Feb 03, 2010 7:44 am
is x<y?

(1) 2x<3y

(2) xy >0

Clearly B is not sufficient.
I tried plugging #s for option A and everytime whatever #s i did everytime i got x <y

Which #s did i miss trying??
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Source: — Data Sufficiency |
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by sumanr84 » Wed Feb 03, 2010 7:56 am
try plugging 1 for both X and Y.

2X < 3Y
X<1.5 Y

1<1.5 * 1 , condition holds true but X (is not) < Y.

Plug X =2, Y=3

2 < 4.5 and X < Y, So, Not Sufficient.
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by ajith » Wed Feb 03, 2010 7:57 am
bhumika.k.shah wrote:is x<y?

(1) 2x<3y

(2) xy >0

Clearly B is not sufficient.
I tried plugging #s for option A and everytime whatever #s i did everytime i got x <y

Which #s did i miss trying??
1) x<3/2y

Plug

x=1 y=0.75

2x<3y but yet x>y

so 1) also is insufficient
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by thephoenix » Wed Feb 03, 2010 7:58 am
bhumika.k.shah wrote:is x<y?

(1) 2x<3y

(2) xy >0

Clearly B is not sufficient.
I tried plugging #s for option A and everytime whatever #s i did everytime i got x <y

Which #s did i miss trying??
u must not have tried with fraction
x=1/2
andy=1/3

2x<3y
but x>y
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by bhumika.k.shah » Wed Feb 03, 2010 8:00 am
Ahha! Found it!

:-(
thephoenix wrote:
bhumika.k.shah wrote:is x<y?

(1) 2x<3y

(2) xy >0

Clearly B is not sufficient.
I tried plugging #s for option A and everytime whatever #s i did everytime i got x <y

Which #s did i miss trying??
u must not have tried with fraction
x=1/2
andy=1/3

2x<3y
but x>y
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by rohan_vus » Wed Feb 03, 2010 8:09 am
Try with x = y values..i.e x = 1 or y = 1...or x = 2 and y =2.. etc...
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by bhumika.k.shah » Wed Feb 03, 2010 9:15 am
the phoenix,
if u take x = 1/2 and y = 1/3 ..as u said earlier ....
then the 1st statement is not satisfied! i cannot proceed further to question the main stem unless each of the two statements are individually proven valid.

If i take x = 1/2 and y = 1/3 then the answer i get as 1=1 which contradicts statement one i.e., 2x<3y
thephoenix wrote:
bhumika.k.shah wrote:is x<y?

(1) 2x<3y

(2) xy >0

Clearly B is not sufficient.
I tried plugging #s for option A and everytime whatever #s i did everytime i got x <y

Which #s did i miss trying??
u must not have tried with fraction
x=1/2
andy=1/3

2x<3y
but x>y
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by bhumika.k.shah » Wed Feb 03, 2010 9:17 am
Rohan,

thanks for this info.
using x=y=1 i get an answer NO to the main question.

Now which #s should i plug in to try proving x>y and hence statement 1 = INSUFFICIENT????
rohan_vus wrote:Try with x = y values..i.e x = 1 or y = 1...or x = 2 and y =2.. etc...
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by thephoenix » Wed Feb 03, 2010 9:23 am
bhumika.k.shah wrote:the phoenix,
if u take x = 1/2 and y = 1/3 ..as u said earlier ....
then the 1st statement is not satisfied! i cannot proceed further to question the main stem unless each of the two statements are individually proven valid.

If i take x = 1/2 and y = 1/3 then the answer i get as 1=1 which contradicts statement one i.e., 2x<3y
yeah true

we must take x=1/2 and y=1/2
for which
2x<3y
but x=y hence no
and for other values
like x=1 and y=2
yes
hence insuff.....
applogies for the wrng value in pre post
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by bhumika.k.shah » Wed Feb 03, 2010 8:31 pm
U got it this time :-)
thephoenix wrote:
bhumika.k.shah wrote:the phoenix,
if u take x = 1/2 and y = 1/3 ..as u said earlier ....
then the 1st statement is not satisfied! i cannot proceed further to question the main stem unless each of the two statements are individually proven valid.

If i take x = 1/2 and y = 1/3 then the answer i get as 1=1 which contradicts statement one i.e., 2x<3y
yeah true

we must take x=1/2 and y=1/2
for which
2x<3y
but x=y hence no
and for other values
like x=1 and y=2
yes
hence insuff.....
applogies for the wrng value in pre post
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