It is currently 18 Oct 2017, 02:52

### 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

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

# 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)

Author Message
CEO
Joined: 15 Aug 2003
Posts: 3454

Kudos [?]: 918 [0], given: 781

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

### Show Tags

16 Sep 2003, 00:48
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 100% (00:49) wrong based on 1 sessions

### HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Can you do this in 1 min?

Is 2^x>75 ?

1) 3^x >50
2) 2^x * 3^x > 1500

Kudos [?]: 918 [0], given: 781

Senior Manager
Joined: 22 May 2003
Posts: 328

Kudos [?]: 173 [0], given: 0

Location: Uruguay

### Show Tags

16 Sep 2003, 20:54

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.

Kudos [?]: 173 [0], given: 0

Intern
Joined: 28 Aug 2003
Posts: 36

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

Location: USA

### Show Tags

16 Sep 2003, 21:14
MartinMag wrote:

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, 21:20, edited 1 time in total.

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

Senior Manager
Joined: 22 May 2003
Posts: 328

Kudos [?]: 173 [0], given: 0

Location: Uruguay

### Show Tags

16 Sep 2003, 21:17
True. I missed that.

Kudos [?]: 173 [0], given: 0

16 Sep 2003, 21:17
Display posts from previous: Sort by

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

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