Special Discounts for the Beat The GMAT Community

Kaplan GMAT Discount
Manhattan GMAT Discount Stacy Blackman Discount

Veritas Prep GMAT Discount
Princeton Review GMAT Discount

Welcome to Beat The GMAT, the world's largest GMAT & MBA forum. Please join our rich community of friendly members. Get free help from
experts who teach at the leading GMAT & MBA prep companies — Kaplan, Veritas Prep, Manhattan GMAT and Stacy Blackman Consulting.

Announcement: Apply for the Fall 2008 Beat The GMAT Scholarship, featuring $20,000 in prizes.

500 ds

Beat The GMAT Forum Index -> GMAT Math -> Data Sufficiency

View previous topic :: View next topic

Author

Message

dunkin77
Really wants to Beat The GMAT!

Joined: 01 Apr 2007
Posts: 269

Thanks given: 0
Thanked 0 times in 0 posts

Posted: Wed Apr 04, 2007 2:52 pm Post subject: 500 ds

Hi, I thought the answer was A) but the correct answer is D).... . If x≠0, is \|x\| <1? (1) x2<1 (2) \|x\| < 1/x

gabriel
Managing Director

Joined: 20 Dec 2006
Posts: 660

Thanks given: 84
Thanked 20 times in 19 posts

Location: India

Posted: Thu Apr 05, 2007 5:23 am Post subject: Re: 500 ds

dunkin77 wrote:

Hi,

I thought the answer was A) but the correct answer is D)....
Crying or Very sad

. If x≠0, is |x| <1?
(1) x2<1
(2) |x| < 1/x

ok u already know that A is sufficient....

so let me focus on B ... it is given that mod(x)<1/x... so one thing is sure that x>0 .. else mod(x) wuld have been >1/x ...

now for any value greater than 1 ... 1/x will vary between 0 and 1 ... for eg. if x is 2 1/x=.5 .... so for x>1 ... 0 < 1/x < 1 ... and mod(x)>1 ... but this violates the condition given that mod (x)<1/x ..

so the only possible value for x is values between 0 and 1 ... when x is
between 0 and 1 ... 1/x>1 and mod(x) will vary between 0 and 1 ... and that fulfills the condition that mod(x)<1/x ...

Display posts from previous:

	Beat The GMAT Forum Index -> GMAT Math -> Data Sufficiency	All times are GMT - 7 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum

Forum Map
Site Map

"GMAT" and other GMAC™ trademarks are registered trademarks of the Graduate Management Admission Council™. The Graduate Management Admission Council™ does not endorse, nor is it affiliated in any way with the owner or any content on this website. The opinions expressed here are solely those of the author or those of the members of this website. Copyright © 2008 BTG Test Prep, LLC. Powered by phpBB © 2001, 2005 phpBB Group.