Target Test Prep 20% Off Flash Sale is on! Code: FLASH20

Redeem
Target Test Prep
5-Day Free Trial
5-day free, full-access trial TTP

Available with Beat the GMAT members only code

MORE DETAILS
Target Test Prep
Magoosh
Magoosh
Study with Magoosh GMAT prep

Available with Beat the GMAT members only code

MORE DETAILS
Magoosh

inequity

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 484
Joined: Sun Jul 30, 2006 7:01 pm
Thanked: 2 times
Followed by:1 members

inequity

by magical cook » Sun Dec 09, 2007 5:44 am
which of the following inequities has a solution set that, when graphed on the number line, is a single line segment of finite length?

a) x^4>1
b) x^3<27>16
d)2 > lxl <5
e) 2<3x+4<6

[spoiler]
although c is not the answer but I am wondering why c is not -3<x<3..... [/spoiler]
Top
User avatar
Community Manager
Posts: 789
Joined: Sun Jan 28, 2007 3:51 pm
Location: Silicon valley, California
Thanked: 30 times
Followed by:1 members

by jayhawk2001 » Sun Dec 09, 2007 8:37 am
Only E seems to be finite and bounded.

Can you please post option C. I don't see a choice 'c' in the
question
Top
Master | Next Rank: 500 Posts
Posts: 484
Joined: Sun Jul 30, 2006 7:01 pm
Thanked: 2 times
Followed by:1 members

by magical cook » Sun Dec 09, 2007 9:27 am
Hi

sorry, option C) is c^3>27 (I dont know how to 'expand' this )

Yes, OA is E but I also want to know why C is wrong. (I thought -3<x<3..)



By the way, it's good to see you on the forum again!
Top
User avatar
Master | Next Rank: 500 Posts
Posts: 157
Joined: Tue Dec 04, 2007 9:05 am
Thanked: 9 times
GMAT Score:680

by hemanth28 » Sun Dec 09, 2007 10:52 am
C^3>27

=>C>3 ..which is not finite.So the answer is (E)
Top
Master | Next Rank: 500 Posts
Posts: 124
Joined: Thu Aug 23, 2007 5:11 am
Thanked: 2 times

by gmatguy16 » Sun Dec 09, 2007 4:29 pm
can someone please explain why b is not a valid choice?
Top
Master | Next Rank: 500 Posts
Posts: 484
Joined: Sun Jul 30, 2006 7:01 pm
Thanked: 2 times
Followed by:1 members

by magical cook » Sun Dec 09, 2007 5:08 pm
Sorry, b) is supposed to be x^4>16. :oops:
Top
User avatar
Master | Next Rank: 500 Posts
Posts: 157
Joined: Tue Dec 04, 2007 9:05 am
Thanked: 9 times
GMAT Score:680

by hemanth28 » Sun Dec 09, 2007 7:05 pm
x^4>16

solving
x<2>2 ...so B is not right.[/i]
Top
Post new topic Post Reply
• Page 1 of 1