NEW HERE? LEARN MORE
closeclose
Last visit was: 26 Apr 2024, 14:19 It is currently 26 Apr 2024, 14:19
Decision Tracker
My Rewards
New posts
New comers' posts

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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel

DS 3 gmat prep

User avatar
Balvinder
Manager
Manager
Joined: 20 Mar 2005
Posts: 117
Own Kudos [?]: 414 [0]
Given Kudos: 0
Send PM
DS 3 gmat prep [#permalink] New post   07 Nov 2007, 06:09
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Hide Show timer Statistics
please explain this ..i dont have the OA.



Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Data Sufficiency (DS) Forum
Still interested in this question? Check out the "Best Topics" block below for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
User avatar
jbs
Manager
Manager
Joined: 25 Jul 2007
Posts: 58
Own Kudos [?]: 32 [0]
Given Kudos: 0
Send PM
Re: DS 3 gmat prep [#permalink] New post   07 Nov 2007, 08:44
I think the answer is C.

Statement 1 by itself gives us the following possibilities:

a=2,n=6

OR

a=4,n=3

OR

a=8,n=2

Statement 2 by itself doesnt give us the value of 'a' either.


Taking both statements together, we get the value of a=2


Is there something I am missing here?
User avatar
cstefanita
Intern
Intern
Joined: 01 Nov 2007
Posts: 40
Own Kudos [?]: 6 [0]
Given Kudos: 0
Send PM
Re: DS 3 gmat prep [#permalink] New post   08 Nov 2007, 17:24
Could it be B?

We know 1*2*3*4*5*6*7*8 is a multiple of a^n and with n=6, the only option is 2^6
User avatar
jbs
Manager
Manager
Joined: 25 Jul 2007
Posts: 58
Own Kudos [?]: 32 [0]
Given Kudos: 0
Send PM
Re: DS 3 gmat prep [#permalink] New post   08 Nov 2007, 21:44
cstefanita wrote:
Could it be B?

We know 1*2*3*4*5*6*7*8 is a multiple of a^n and with n=6, the only option is 2^6


You are spot on. I still cant figure out how statement 1 is sufficient by itself though.
User avatar
GMATBLACKBELT
VP
VP
Joined: 29 Mar 2007
Posts: 1150
Own Kudos [?]: 1737 [0]
Given Kudos: 0
Send PM
Re: DS 3 gmat prep [#permalink] New post   08 Nov 2007, 22:16
cstefanita wrote:
Could it be B?

We know 1*2*3*4*5*6*7*8 is a multiple of a^n and with n=6, the only option is 2^6



I agree that a^n, w/ n=6 that a can only be 2.

However, I fail to see anywhere in the original stem relating a to n.

All S2 says is n=6. The original stem says that a & n are + integers. Nothing more about a & n. It does say that a is divisble by 8! or 8! is a multiple of a.

I cannot see how B is correct. A as well, I don't see how it can't be correct as pointed at by JBS.


So i would go w/ C.
User avatar
jbs
Manager
Manager
Joined: 25 Jul 2007
Posts: 58
Own Kudos [?]: 32 [0]
Given Kudos: 0
Send PM
Re: DS 3 gmat prep [#permalink] New post   08 Nov 2007, 22:25
jbs wrote:
I think the answer is C.

Statement 1 by itself gives us the following possibilities:

a=2,n=6

OR

a=4,n=3

OR

a=8,n=2

Statement 2 by itself doesnt give us the value of 'a' either.

Taking both statements together, we get the value of a=2

Is there something I am missing here?


The mind plays games. Thats the logic i had used to answer the post in the first place. Over a period of time, i actually forgot that and figured i might have made a mistake.....
User avatar
GK_Gmat
Senior Manager
Senior Manager
Joined: 09 Aug 2006
Posts: 351
Own Kudos [?]: 975 [0]
Given Kudos: 0
Send PM
Re: DS 3 gmat prep [#permalink] New post   08 Nov 2007, 23:40
I get B.

Stat 1: a could be 4 & n could be 3 or a could be 2 & n could be 6. Insuff.

Stat 2: n = 6
Given: a^n is a factor of 8!
If n = 6 then the only value that 'a' can assume, in order to be a factor of 8! is 2. Suff.
User avatar
GMATBLACKBELT
VP
VP
Joined: 29 Mar 2007
Posts: 1150
Own Kudos [?]: 1737 [0]
Given Kudos: 0
Send PM
Re: DS 3 gmat prep [#permalink] New post   08 Nov 2007, 23:47
GK_Gmat wrote:
I get B.

Stat 1: a could be 4 & n could be 3 or a could be 2 & n could be 6. Insuff.

Stat 2: n = 6
Given: a^n is a factor of 8!
If n = 6 then the only value that 'a' can assume, in order to be a factor of 8! is 2. Suff.



Ok I agree its B.

My laptop screen is tiny so I couldnt really see the n in a^n in the original statement.



Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Data Sufficiency (DS) Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
GMAT Club Bot
gmatclubot
Re: DS 3 gmat prep [#permalink]
08 Nov 2007, 23:47
Moderators:
Bunuel
Math Expert
92948 posts
yashikaaggarwal
Senior Moderator - Masters Forum
3137 posts
GMATBusters
GMAT Tutor
1905 posts

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne
Main navigation
GMAT Resources
Partners
MBA Resources
www.gmac.com|www.mba.com | | GMAT Club Rules | Terms and Conditions