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

It is currently 18 Apr 2014, 13:00

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

Can you do this in 1 min? Is 2^x>75 ? 1) 3^x >50 2)

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
CEO
CEO
Joined: 15 Aug 2003
Posts: 3470
Followers: 57

Kudos [?]: 649 [0], given: 781

Can you do this in 1 min? Is 2^x>75 ? 1) 3^x >50 2) [#permalink] New post 15 Sep 2003, 23:48
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

0% (00:00) correct 100% (00:49) wrong based on 1 sessions
Can you do this in 1 min?

Is 2^x>75 ?

1) 3^x >50
2) 2^x * 3^x > 1500
Senior Manager
Senior Manager
User avatar
Joined: 22 May 2003
Posts: 334
Location: Uruguay
Followers: 1

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

GMAT Tests User
 [#permalink] New post 16 Sep 2003, 19:54
I think answer is E

If 2^x>75 then x>=7 since 2^6=64

In B: 2^x+3^x>1500

If x=6: 2^6=64 and 3^6=729 64*729 but 2^6<75
If x=7 2^7+3^7 must be >1500 and 2^7>75

Then is not sufficient

Combined:

If B=50 (its almost the same as trying with 51 and much easier to calculate)

2^x > 30 not suff.
Intern
Intern
Joined: 28 Aug 2003
Posts: 36
Location: USA
Followers: 0

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

 [#permalink] New post 16 Sep 2003, 20:14
MartinMag wrote:
I think answer is E

If 2^x>75 then x>=7 since 2^6=64

In B: 2^x+3^x>1500

If x=6: 2^6=64 and 3^6=729 64*729 but 2^6<75
If x=7 2^7+3^7 must be >1500 and 2^7>75

Then is not sufficient

Combined:

If B=50 (its almost the same as trying with 51 and much easier to calculate)

2^x > 30 not suff.


Agree. It has to be E.

Martin, Good job. The only thing I disagree with your solution is that it was never said that x was an integer in the question stem. So, we can say x starts at a value between 6 and 7.

Last edited by edealfan on 16 Sep 2003, 20:20, edited 1 time in total.
Senior Manager
Senior Manager
User avatar
Joined: 22 May 2003
Posts: 334
Location: Uruguay
Followers: 1

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

GMAT Tests User
 [#permalink] New post 16 Sep 2003, 20:17
True. I missed that.

Doesn't change the answer though
  [#permalink] 16 Sep 2003, 20:17
    Similar topics Author Replies Last post
Similar
Topics:
New posts If x does not = 2, /(x-2) = ? Ans = 3x^2-1 Can somebody hilairity 1 21 Dec 2004, 20:54
New posts Is (3x+8)/(x+2) an integer? 1. x is an integer 2. x=0 Can karlfurt 4 25 Oct 2006, 01:31
New posts If x is a positive int, is y^2*(x^3-x+1) > 75? 1. y> 1 Parbe 6 23 Sep 2007, 15:51
New posts Is SQRT = 3-x? 1) x is not 3 2) -x*lxl > 0 Would you utgirl826 5 04 Jun 2008, 16:47
New posts If x is a positive integer, is y^2(x^3-x+1)>75 1. y>1 olive 2 18 Jun 2008, 15:41
Display posts from previous: Sort by

Can you do this in 1 min? Is 2^x>75 ? 1) 3^x >50 2)

  Question banks Downloads My Bookmarks Reviews Important topics  


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®.