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OG 11th Edition (Q64 Inequalities) - Explain pls

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Source: — Data Sufficiency |
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by cramya » Tue Mar 31, 2009 8:54 pm
Stmt II

Pick a integer and fraction to get both a yes and no

x/y = y-1

x = y^2-y

Let y=3

x=6
x>y yes

y=1/2

x= 1/4-1/2

= -1/4

x>y NO

INSUFF

Choose A
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Re: OG 11th Edition (Q64 Inequalities) - Explain pls

by joyseychow » Tue Mar 31, 2009 10:25 pm
joyseychow wrote:Is x>y?

(1) x=y+2

(2)x/y=y-1


Appreciate if someone could explain why stmt 2 not sufficient. The book explanation not clear. Thanks!!
Sorry! I made a typo error on stmt 2. It should be:

Is x>y?

(1) x=y+2

(2)x/2=y-1
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by ketkoag » Wed Apr 01, 2009 2:35 am
now take statement 2 i.e. x = 2(y-1)
consider y = 1 => x=0 therefore x<y
now consider y = 3 => x = 4 therefore x>y.
Statement 2 Not sufficient.
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by joyseychow » Thu Apr 02, 2009 12:20 am
ketkoag wrote:now take statement 2 i.e. x = 2(y-1)
consider y = 1 => x=0 therefore x<y
now consider y = 3 => x = 4 therefore x>y.
Statement 2 Not sufficient.

OIC, that simple. Thanks! :oops:
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by mjjking » Thu Apr 02, 2009 1:44 am
These problems look more difficult than they are :) . You just have to keep cool and pick numbers carefully. It works 99% of times.
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by joyseychow » Fri Apr 03, 2009 5:29 am
mjjking wrote:These problems look more difficult than they are :) . You just have to keep cool and pick numbers carefully. It works 99% of times.
How do I pick the right numbers? Is there a set of numbers that you commonly use?
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by vittalgmat » Sat Apr 04, 2009 12:24 am
joyseychow wrote:
mjjking wrote:These problems look more difficult than they are :) . You just have to keep cool and pick numbers carefully. It works 99% of times.
How do I pick the right numbers? Is there a set of numbers that you commonly use?
Search for postings of mayonnai5e. In one posting he has explained the smart number picking strategy.
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by Sumit69 » Sun Apr 05, 2009 9:48 am
Dear mayonnai5e,
Please share the smart number picing strategy. I am unable to locate.

Rgds
sumit
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by vittalgmat » Sun Apr 05, 2009 10:08 am
Sumit69 wrote:Dear mayonnai5e,
Please share the smart number picing strategy. I am unable to locate.

Rgds
sumit

https://www.beatthegmat.com/my-blog-erro ... 99-75.html
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