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kaplan 800 question

This topic has 1 expert reply and 3 member replies
kandelaki Senior | Next Rank: 100 Posts Default Avatar
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kaplan 800 question

Post Thu Feb 22, 2007 10:54 pm
if -1/2 and -1/4

which is the minimum value of xy^2 ?

choices
-1/75
-1/50
-1/48
-1/32
-1/16

the explanation says that the minimum value means farthest from 0. thats true , yes. however i believe farthest from 0 we achive by taking lowest possibilies of x and y ( that is 1/3 form x and 1/5 from y) and get -1/75 as answerr
but the official answer they took was 1/2 and 1/4 and got -1/32
i am all confused here

please help

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kandelaki Senior | Next Rank: 100 Posts Default Avatar
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Post Tue Feb 27, 2007 2:47 am
Oh, Surprised now i get it! thanks Stacey!!

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Stacey Koprince GMAT Instructor
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Post Mon Feb 26, 2007 11:00 pm
Also, just FYI - this might be what is messing you up:

-75 is further from zero than -32.

BUT -1/75 is closer to zero than -1/32.

Think about two fractions that are much easier to understand: -1/2 and -1/3. Which one is closer to zero? -1/3. And that has the larger number in the denominator.

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kandelaki Senior | Next Rank: 100 Posts Default Avatar
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Posted:
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Post Tue Feb 27, 2007 2:47 am
Oh, Surprised now i get it! thanks Stacey!!

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Stacey Koprince GMAT Instructor
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Post Mon Feb 26, 2007 11:00 pm
Also, just FYI - this might be what is messing you up:

-75 is further from zero than -32.

BUT -1/75 is closer to zero than -1/32.

Think about two fractions that are much easier to understand: -1/2 and -1/3. Which one is closer to zero? -1/3. And that has the larger number in the denominator.

_________________
Please note: I do not use the Private Messaging system! I will not see any PMs that you send to me!!

Stacey Koprince
GMAT Instructor
Director of Online Community
Manhattan GMAT

Contributor to Beat The GMAT!

Learn more about me

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