It is currently 17 Nov 2017, 12:44

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

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

The number k is a three-digit integer that has A as its

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Manager
Manager
avatar
Joined: 29 Sep 2008
Posts: 139

Kudos [?]: 128 [0], given: 1

The number k is a three-digit integer that has A as its [#permalink]

Show Tags

New post 16 Oct 2010, 13:30
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

76% (01:17) correct 24% (01:12) wrong based on 34 sessions

HideShow timer Statistics

The number k is a three-digit integer that has A as its hundreds’ digit, B as its tens’ digit, and C as its units’ digit. If none of the three digits is 0, what is the value of 2k?

(1) A = 3B = 9C

(2)A/B=B/C

i have revised the question as the question was wrong
[Reveal] Spoiler: OA

Last edited by mrinal2100 on 16 Oct 2010, 21:49, edited 1 time in total.

Kudos [?]: 128 [0], given: 1

Manager
Manager
User avatar
Joined: 19 Aug 2010
Posts: 72

Kudos [?]: 30 [0], given: 2

Re: number system [#permalink]

Show Tags

New post 16 Oct 2010, 15:29
mrinal2100,

According to (1) there is only one possibility for the digits: 1 3 9
therefore (1) is sufficient.

(2) is true when ,for example, A=1 ,B=2 and C=4 but also when A=2, B=4 and C=8 -->therefore not sufficient.

correct should be A.

Last edited by medanova on 17 Oct 2010, 00:45, edited 1 time in total.

Kudos [?]: 30 [0], given: 2

Manager
Manager
avatar
Joined: 11 Jul 2010
Posts: 223

Kudos [?]: 106 [0], given: 20

GMAT ToolKit User
Re: number system [#permalink]

Show Tags

New post 16 Oct 2010, 23:30
its A. you get B = 3; A = 9 and C = 1

statement 2: AC = B^2

so lets say B = 3

And say A= 9; C = 1

then B^2 = 9 = AC

But the relationship holds if A= 9 and C = 1 or if A=1 and C=9

so value of 2k will change with only statement 2 ---> not sufficient

Kudos [?]: 106 [0], given: 20

BSchool Thread Master
avatar
Joined: 19 Feb 2010
Posts: 390

Kudos [?]: 201 [0], given: 76

Re: number system [#permalink]

Show Tags

New post 17 Oct 2010, 02:34
A.

Following the first statement we have only one option: A=1, B=3, C=9. Sufficient.

With the second statement we have several options: A=1, B=2, C=4; A=2, B=4, C=8. Not sufficient.

Therefore, A is the answer.

Kudos [?]: 201 [0], given: 76

Re: number system   [#permalink] 17 Oct 2010, 02:34
Display posts from previous: Sort by

The number k is a three-digit integer that has A as its

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


GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

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®.