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GMAT prep PS question

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by dumb.doofus » Mon Apr 20, 2009 9:35 pm
I dont know man.. but I checked this question in Google Chrome and Safari web browser.. what you have put is so wide that these community sponsor ads come over it and so I can't even read the question properly..

anyone facing such problem??
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by mlane25269 » Mon Apr 20, 2009 9:45 pm
If you copy the image to a Word doc you should be able to see all of it without the banner ads covering it.
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by dumb.doofus » Mon Apr 20, 2009 10:02 pm
mlane25269 wrote:If you copy the image to a Word doc you should be able to see all of it without the banner ads covering it.
Hey thanks buddy..

as I see it.. its a basic geometric progression.. with initial value a = 1/2
and r = -1/2 and n = 10

so sum of n terms in a geometric progression is a(1-r^n)/(1-r)

just put the values.. and this gives..

This is approximately 1/3rd.. so I would choose D.. i.e. between 1/4 and 1/2
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Re: GMAT prep PS question

by dabral » Tue Apr 21, 2009 6:54 pm
Please see my video solution.

https://www.gmatquantum.com/shared-posts ... nces9.html
mlane25269 wrote:Can someone explain? Thanks!
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