GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 14 Dec 2019, 08:56

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.

Close

Request Expert Reply

Confirm Cancel

If 0 < x < 2, which of the following must be greatest?

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Find Similar Topics 
Retired Moderator
avatar
Joined: 29 Oct 2013
Posts: 248
Concentration: Finance
GPA: 3.7
WE: Corporate Finance (Retail Banking)
GMAT ToolKit User
If 0 < x < 2, which of the following must be greatest?  [#permalink]

Show Tags

New post 08 Jun 2014, 23:48
1
8
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

90% (00:57) correct 10% (01:10) wrong based on 287 sessions

HideShow timer Statistics

If 0 < x < 2, which of the following must be greatest?

(A) x
(B) x^2
(C) 2x
(D) x + 2
(E) 2^x

_________________
Please contact me for super inexpensive quality private tutoring

My journey V46 and 750 -> http://gmatclub.com/forum/my-journey-to-46-on-verbal-750overall-171722.html#p1367876
Retired Moderator
User avatar
B
Joined: 10 May 2010
Posts: 805
GMAT ToolKit User
Re: If 0 < x < 2, which of the following must be greatest?  [#permalink]

Show Tags

New post 08 Jun 2014, 23:52
A graphical solution is the best in this case.


At \(x = 0\) , try to compare values of all functions, only two functions have non zero values \(x+2 = 2, 2^x = 1\).
_________________
The question is not can you rise up to iconic! The real question is will you ?
SVP
SVP
User avatar
Status: The Best Or Nothing
Joined: 27 Dec 2012
Posts: 1727
Location: India
Concentration: General Management, Technology
WE: Information Technology (Computer Software)
Re: If 0 < x < 2, which of the following must be greatest?  [#permalink]

Show Tags

New post 24 Jun 2014, 03:06
4
For x = 1, try the options given

(A) x = 1
(B) \(x^2 = 1^2 = 1\)
(C) 2x = 2
(D) x + 2 = 1 + 2 = 3
(E) \(2^x = 2^1 = 2\)

Answer = D
Intern
Intern
avatar
Joined: 11 Sep 2016
Posts: 3
Re: If 0 < x < 2, which of the following must be greatest?  [#permalink]

Show Tags

New post 13 Sep 2016, 20:19
why can it not be 1.5? are they looking for integers specifically
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 59725
Re: If 0 < x < 2, which of the following must be greatest?  [#permalink]

Show Tags

New post 14 Sep 2016, 00:38
Manager
Manager
User avatar
S
Joined: 25 Mar 2013
Posts: 225
Location: United States
Concentration: Entrepreneurship, Marketing
GPA: 3.5
GMAT ToolKit User Reviews Badge
Re: If 0 < x < 2, which of the following must be greatest?  [#permalink]

Show Tags

New post 02 Jan 2017, 16:57
0 < x < 2
x > 0 , x < 2
x = 1
D
Intern
Intern
avatar
B
Joined: 26 Sep 2016
Posts: 3
GMAT ToolKit User
Re: If 0 < x < 2, which of the following must be greatest?  [#permalink]

Show Tags

New post 05 Apr 2017, 19:56
If x has to be less than 2 then how option D is the answer ? since D says x=2.
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 59725
Re: If 0 < x < 2, which of the following must be greatest?  [#permalink]

Show Tags

New post 05 Apr 2017, 21:36
CrackVerbal Representative
User avatar
G
Affiliations: CrackVerbal
Joined: 03 Oct 2013
Posts: 563
Location: India
GMAT 1: 780 Q51 V46
Re: If 0 < x < 2, which of the following must be greatest?  [#permalink]

Show Tags

New post 05 Apr 2017, 22:20
2
Top Contributor
1
Hi,

The best way to solve any MUST-BE/COULD –BE question in GMAT is plugging in,

Just plug values based out of the range given in the question,

Let’s pick x= 1

(A) x --> 1

(B) x^2 -->1

(C) 2x -->2

(D) x + 2 -->3

(E) 2^x -->2

So answer has to be D.

Here we are little lucky, because we plugged in value, we got the answer.

But sometime we might have to Plug more than once to get to a final answer.

Some students might think, we have plugged in only one value, what if we try other values and we might get more options,

Just remember this in GMAT, MUST BE means “Always”. So here all the other four options were not greater than D for x = 1. So we can eliminate.

So answer is D.

Hope this helps.
_________________
- CrackVerbal Prep Team

For more info on GMAT and MBA, follow us on @AskCrackVerbal

Register for the Free GMAT Kickstarter Course : http://bit.ly/2DDHKHq

Register for our Personal Tutoring Course : https://www.crackverbal.com/gmat/personal-tutoring/

Join the free 4 part GMAT video training series : http://bit.ly/2DGm8tR
GMAT Club Legend
GMAT Club Legend
User avatar
V
Joined: 12 Sep 2015
Posts: 4154
Location: Canada
Re: If 0 < x < 2, which of the following must be greatest?  [#permalink]

Show Tags

New post 29 Nov 2017, 09:26
Top Contributor
1
NoHalfMeasures wrote:
If 0 < x < 2, which of the following must be greatest?

(A) x
(B) x^2
(C) 2x
(D) x + 2
(E) 2^x


The key word here is MUST.
That is, the correct answer must yield the biggest value for ALL values of x between 0 and 2
So, we need only test ONE of the possible x-values.

Let's test x = 1

We get....
(A) x = 1
(B) x^2 = 1^2 = 1
(C) 2x = (2)(1) = 2
(D) x + 2 = 1 + 2 = 3
(E) 2^x = 2^1 = 2

Since D yields the biggest value, then the correct answer MUST be D

Cheers,
Brent
_________________
Test confidently with gmatprepnow.com
Image
Manager
Manager
avatar
B
Joined: 10 Sep 2019
Posts: 53
Location: India
Concentration: Social Entrepreneurship, Healthcare
GPA: 2.6
WE: Project Management (Non-Profit and Government)
CAT Tests
Re: If 0 < x < 2, which of the following must be greatest?  [#permalink]

Show Tags

New post 25 Nov 2019, 05:08
Use X as 1.5 (3/2) to see which option has the highest answer.

Option D clearly has the highest answer with 3.5.

Smash D
GMAT Club Bot
Re: If 0 < x < 2, which of the following must be greatest?   [#permalink] 25 Nov 2019, 05:08
Display posts from previous: Sort by

If 0 < x < 2, which of the following must be greatest?

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  





Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne