It is currently 21 Sep 2017, 18:18

### 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

# M04 Q26

Author Message
Manager
Joined: 02 Aug 2009
Posts: 107

Kudos [?]: 25 [0], given: 1

### Show Tags

05 Jan 2010, 15:50
Is (7^7) / (7^X) an integer?

1 0<=X<=7
2 absolute(X) = X^2

[Reveal] Spoiler:
OA B

Thanks,

Run

Kudos [?]: 25 [0], given: 1

Senior Manager
Joined: 30 Aug 2009
Posts: 285

Kudos [?]: 184 [1], given: 5

Location: India
Concentration: General Management

### Show Tags

05 Jan 2010, 20:34
1
KUDOS
run4run wrote:
Is (7^7) / (7^X) an integer?

1 0<=X<=7
2 absolute(X) = X^2

Thanks,

Run

stmnt1 tells us that x is b/w 0 and 7 but x can be fraction as well i.e. if x=1 then (7^7) / (7^X) is an integer

if x = 3/2 then (7^7) / (7^X) is not an integer. hence insuff

stmnt2 - |x| = x^2. only values of x satisfying this condition are -1,0,1. for all the 3 values (7^7) / (7^X) will be an integer. hence suff

NOTE: Its a yes/no question. we are not concerned with the value of expression

Kudos [?]: 184 [1], given: 5

Manager
Joined: 02 Aug 2009
Posts: 107

Kudos [?]: 25 [0], given: 1

### Show Tags

11 Jan 2010, 14:33
isn't the OA wrong than? shouldn't the answer be D since 7^7/7^-1 , 7^7/7^0 and 7^7/7^1 all equal integers?

Run

Kudos [?]: 25 [0], given: 1

Re: M04 Q26   [#permalink] 11 Jan 2010, 14:33
Similar topics Replies Last post
Similar
Topics:
7 M04 #1 26 18 Jan 2013, 09:12
33 M04 # 32 15 12 Oct 2012, 05:47
3 m04 Q23 12 07 Nov 2013, 06:53
23 M04 #12 93 28 Jul 2013, 22:11
18 M04 q26 21 25 Dec 2013, 01:01
Display posts from previous: Sort by

# M04 Q26

Moderator: Bunuel

 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®.