It is currently 21 Nov 2019, 08:58
My Tests

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.

x > 0

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Founder
Founder
User avatar
Joined: 18 Apr 2015
Posts: 8802
Followers: 176

Kudos [?]: 2055 [0], given: 8134

CAT Tests
x > 0 [#permalink] New post 18 Sep 2018, 10:27
Expert's post
00:00

Question Stats:

79% (00:21) correct 20% (00:07) wrong based on 29 sessions


\(x > 0\)

Quantity A
Quantity B
\(x^3 + 1\)
\(x^4 + 1\)


A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
[Reveal] Spoiler: OA

_________________

Need Practice? 20 Free GRE Quant Tests available for free with 20 Kudos
GRE Prep Club Members of the Month: Each member of the month will get three months free access of GRE Prep Club tests.

1 KUDOS received
GRE Instructor
User avatar
Joined: 10 Apr 2015
Posts: 2571
Followers: 91

Kudos [?]: 2746 [1] , given: 40

CAT Tests
Re: x > 0 [#permalink] New post 18 Sep 2018, 15:49
1
This post received
KUDOS
Expert's post
Carcass wrote:
\(x > 0\)

Quantity A
Quantity B
\(x^3 + 1\)
\(x^4 + 1\)


A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.


We can solve this question using matching operations

Given:
Quantity A: x^3 + 1
Quantity B: x^4 + 1

Subtract 1 from both quantities to get:
Quantity A: x^3
Quantity B: x^4

Since x is POSITIVE, we know that x^3 is POSITIVE.
So, we can safely divide both quantities by x^3 to get:
Quantity A: 1
Quantity B: x

We know that x > 0.
This means x COULD equal 8, in which case, Quantity B is greater
Or x COULD equal 0.5, in which case, Quantity A is greater
x COULD also equal 1, in which case, the quantities are equal

Answer: D

RELATED VIDEO FROM OUR COURSE

_________________

Brent Hanneson – Creator of greenlighttestprep.com
Sign up for my free GRE Question of the Day emails

Re: x > 0   [#permalink] 18 Sep 2018, 15:49
Display posts from previous: Sort by

x > 0

  Question banks Downloads My Bookmarks Reviews Important topics  


GRE Prep Club Forum Home| About| Terms and Conditions and Privacy Policy| GRE Prep Club Rules| Contact

Powered by phpBB © phpBB Group

Kindly note that the GRE® test is a registered trademark of the Educational Testing Service®, and this site has neither been reviewed nor endorsed by ETS®.