Find all School-related info fast with the new School-Specific MBA Forum

It is currently 25 Oct 2014, 15:36

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

m05

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Joined: 14 Apr 2010
Posts: 230
Followers: 2

Kudos [?]: 27 [0], given: 1

m05 [#permalink] New post 13 Jul 2010, 08:39
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

83% (01:47) correct 17% (03:15) wrong based on 6 sessions
If x=1/6 which expression has the greatest value?
a. x^(1/3)
b. x^(1/2)
c. 1/(2x)
d. x/.03
e. x^(-3)

The answer should be "D" which is equivalent to 5.5.
However, the OA is E.
Please help me out.
[Reveal] Spoiler: OA
Ms. Big Fat Panda
Ms. Big Fat Panda
User avatar
Status: Three Down.
Joined: 09 Jun 2010
Posts: 1879
Concentration: Social Entrepreneurship, Organizational Behavior
Followers: 349

Kudos [?]: 1416 [0], given: 196

GMAT ToolKit User
Re: m05 [#permalink] New post 13 Jul 2010, 09:03
First off, let's take a holistic look at the values. The given number x = \frac{1}{6} is a fraction, so the cube root and the square root will also be fractions.

A. x^\frac{1}{3} = (\frac{1}{6})^\frac{1}{3}
B. x^\frac{1}{2} = (\frac{1}{6})^\frac{1}{2}
C. \frac{1}{2x} = 3
D. \frac{x}{0.03} = \frac{100}{18} Rewriting x as 1/6 and 0.03 as 3/100.
E. x^-^3 = (\frac{1}{x})^3 = 6^3

Hence E is the correct answer. I recommend that you go over exponent rules and fractions just to be sure of these concepts.
Manager
Manager
avatar
Joined: 24 Dec 2009
Posts: 227
Followers: 2

Kudos [?]: 26 [0], given: 3

Re: m05 [#permalink] New post 13 Jul 2010, 12:04
Answer is E.

1/x^3 > x / 0.3 in this case since x = 1/6
Manager
Manager
avatar
Joined: 14 Apr 2010
Posts: 230
Followers: 2

Kudos [?]: 27 [0], given: 1

Re: m05 [#permalink] New post 13 Jul 2010, 18:26
ooopsss....such a silly mistake. thx
Re: m05   [#permalink] 13 Jul 2010, 18:26
    Similar topics Author Replies Last post
Similar
Topics:
7 Experts publish their posts in the topic m05#06 scorcho 25 14 Oct 2008, 18:08
5 Experts publish their posts in the topic m05 #10 echizen 20 11 Oct 2008, 08:25
3 Experts publish their posts in the topic M05 #16 snowy2009 15 08 Oct 2008, 15:27
6 M05 #4 dczuchta 21 24 Sep 2008, 09:57
24 Experts publish their posts in the topic m05 #22 vignesh53 28 21 Sep 2008, 10:08
Display posts from previous: Sort by

m05

  Question banks Downloads My Bookmarks Reviews Important topics  


cron

GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.