Find the probalility that n divisible by 9?
1.n is a multiple of 3
2.n is a multiple 27
What would be the correct answere and why?
In data sufficency both the statements should give the same answer right? Here the probality in both the satements seems differnt..right?
Probalility
This topic has expert replies
-
- Junior | Next Rank: 30 Posts
- Posts: 19
- Joined: Thu Jul 29, 2010 2:12 am
- shovan85
- Community Manager
- Posts: 991
- Joined: Thu Sep 23, 2010 6:19 am
- Location: Bangalore, India
- Thanked: 146 times
- Followed by:24 members
1. If n is a multiple of 3 then n can be 3,6,9,12,15,18,.... So in every 3 occurence once it will be div by 9shilpaqueen wrote:Find the probalility that n divisible by 9?
1.n is a multiple of 3
2.n is a multiple of 27
Thus 1/3 (Sufficient)
2. If n is a multiple of 27 then n is bound to be div by 9
Thus 1 (Sufficient)
Thus answer will be D. Because both options are individually sufficient to answer the question.shilpaqueen wrote: What would be the correct answere and why?
Not necessarily. When you are considering an option you have to forget the existence of the other. You have to get the same answer only when you have to consider both options simultaneously (for option C or E)shilpaqueen wrote: In data sufficency both the statements should give the same answer right? Here the probality in both the satements seems differnt..right?
If the problem is Easy Respect it, if the problem is tough Attack it
-
- Senior | Next Rank: 100 Posts
- Posts: 65
- Joined: Tue Nov 23, 2010 9:44 am
- Thanked: 16 times
- Followed by:6 members
- GMAT Score:780
This is a very unusual problem. I've never seen anything like it in the official guide (dating all the way back to OG edition 9), the powerpreps, or any real GMAT I've taken.
Where did you find it?
Where did you find it?
- rishab1988
- Master | Next Rank: 500 Posts
- Posts: 332
- Joined: Tue Feb 09, 2010 3:50 pm
- Thanked: 41 times
- Followed by:7 members
- GMAT Score:720
Laura you are correct in pointing out this is not a GMAT like Q.I have noticed that many people post questions on verbal and quant which are un-GMAT like.
In-fact I have seen that some people post SC questions in which even the non-underlined part is wrong.Same case with CR. According to me,everyone should first credibility of those sources of those questions.It is very likely that those questions in themselves maybe wrong.
I think doing MGMAT CAT quant is the highest level you should aim for in quant.But some people,especially Indians,draw questions from a much tougher exam CAT (Common Admission Test) conducted by IIM's.There is no point in doing those questions because those questions are tougher than GMAT or for that matter any american exam are designed in such a way that the cut-off are as low as possible. For eg getting 60% right on CAT will land you in 95-99 percentile bracket,unlike in GMAT.
In-fact I have seen that some people post SC questions in which even the non-underlined part is wrong.Same case with CR. According to me,everyone should first credibility of those sources of those questions.It is very likely that those questions in themselves maybe wrong.
I think doing MGMAT CAT quant is the highest level you should aim for in quant.But some people,especially Indians,draw questions from a much tougher exam CAT (Common Admission Test) conducted by IIM's.There is no point in doing those questions because those questions are tougher than GMAT or for that matter any american exam are designed in such a way that the cut-off are as low as possible. For eg getting 60% right on CAT will land you in 95-99 percentile bracket,unlike in GMAT.
- goyalsau
- Legendary Member
- Posts: 866
- Joined: Mon Aug 02, 2010 6:46 pm
- Location: Gwalior, India
- Thanked: 31 times
Shovan in Gmat it is always, always , always, That two statements should not contradict each other, It does not matter whether the answer of the question is C or E, or A or B,shovan85 wrote: Not necessarily. When you are considering an option you have to forget the existence of the other. You have to get the same answer only when you have to consider both options simultaneously (for option C or E)
Both statements should always give the same answer,,,,,,,
Saurabh Goyal
[email protected]
-------------------------
EveryBody Wants to Win But Nobody wants to prepare for Win.
[email protected]
-------------------------
EveryBody Wants to Win But Nobody wants to prepare for Win.
-
- Master | Next Rank: 500 Posts
- Posts: 437
- Joined: Sat Nov 22, 2008 5:06 am
- Location: India
- Thanked: 50 times
- Followed by:1 members
- GMAT Score:580
I agree with goyalsau.goyalsau wrote:Shovan in Gmat it is always, always , always, That two statements should not contradict each other, It does not matter whether the answer of the question is C or E, or A or B,shovan85 wrote: Not necessarily. When you are considering an option you have to forget the existence of the other. You have to get the same answer only when you have to consider both options simultaneously (for option C or E)
Both statements should always give the same answer,,,,,,,
Both option answers should give the same answer if they're sufficient.
Hope is the dream of a man awake
- shovan85
- Community Manager
- Posts: 991
- Joined: Thu Sep 23, 2010 6:19 am
- Location: Bangalore, India
- Thanked: 146 times
- Followed by:24 members
HI Sourabh and beat_gmat_09,
How does it matter? If the answers do not match also what will be the answer according to you
If the answers are matching then only will it be D? Is it so? How do you know this please let me know.
Where has it been mentioned? Please this will be of real help.
I agree that I have never seen such two different answers from both options but both options individually are sufficient.
Experts may opine please.
Thanks,
Shovan
How does it matter? If the answers do not match also what will be the answer according to you
If the answers are matching then only will it be D? Is it so? How do you know this please let me know.
Where has it been mentioned? Please this will be of real help.
I agree that I have never seen such two different answers from both options but both options individually are sufficient.
Experts may opine please.
Thanks,
Shovan
If the problem is Easy Respect it, if the problem is tough Attack it
-
- Master | Next Rank: 500 Posts
- Posts: 437
- Joined: Sat Nov 22, 2008 5:06 am
- Location: India
- Thanked: 50 times
- Followed by:1 members
- GMAT Score:580
Hi Shovan,shovan85 wrote:HI Sourabh and beat_gmat_09,
How does it matter? If the answers do not match also what will be the answer according to you
If the answers are matching then only will it be D? Is it so? How do you know this please let me know.
Where has it been mentioned? Please this will be of real help.
I agree that I have never seen such two different answers from both options but both options individually are sufficient.
Experts may opine please.
Thanks,
Shovan
I digged this very hard for you, this is what i found. These articles need to be archived by year and month, i'm putting a suggestion for this one.
Check this link -
https://www.beatthegmat.com/mba/2010/04/ ... he-overlap
Hope this helps.
P.S. - Don't forget to check the comments.
Thanks,
Nikhil
Hope is the dream of a man awake
- selango
- Legendary Member
- Posts: 1460
- Joined: Tue Dec 29, 2009 1:28 am
- Thanked: 135 times
- Followed by:7 members
Shovan,
As others pointed out,in GMAT its highly impossible to get a question like this.
If question ask us to solve value of single variable or inequality condition or probability,please note that the value in both the statements never contradicts each other.To say in other words it must be equal in both statements if both statements are sufficient.
For example,check the below problem [It's wont appear in GMAT]
is x>10?
stmt1,
x<5
Sufficient
stmt2,
x>11
Sufficient
As you can see both statements are sufficient.But if v check the condition it ll be like x<5 and x>11.
Is this possible?No.
Id the answer is D,then
1.The value of any variable matches in both statements.
2.The inequality condition ll be correct and wont contradict each other.
shilpaqueen,
Please cite the source of this question.Always use the authentic GMAT material.
As others pointed out,in GMAT its highly impossible to get a question like this.
If question ask us to solve value of single variable or inequality condition or probability,please note that the value in both the statements never contradicts each other.To say in other words it must be equal in both statements if both statements are sufficient.
For example,check the below problem [It's wont appear in GMAT]
is x>10?
stmt1,
x<5
Sufficient
stmt2,
x>11
Sufficient
As you can see both statements are sufficient.But if v check the condition it ll be like x<5 and x>11.
Is this possible?No.
Id the answer is D,then
1.The value of any variable matches in both statements.
2.The inequality condition ll be correct and wont contradict each other.
shilpaqueen,
Please cite the source of this question.Always use the authentic GMAT material.
--Anand--
- shovan85
- Community Manager
- Posts: 991
- Joined: Thu Sep 23, 2010 6:19 am
- Location: Bangalore, India
- Thanked: 146 times
- Followed by:24 members
Thanks man. Arising this situation is highly unlikelybeat_gmat_09 wrote:Hi Shovan,shovan85 wrote:HI Sourabh and beat_gmat_09,
How does it matter? If the answers do not match also what will be the answer according to you
If the answers are matching then only will it be D? Is it so? How do you know this please let me know.
Where has it been mentioned? Please this will be of real help.
I agree that I have never seen such two different answers from both options but both options individually are sufficient.
Experts may opine please.
Thanks,
Shovan
I digged this very hard for you, this is what i found. These articles need to be archived by year and month, i'm putting a suggestion for this one.
Check this link -
https://www.beatthegmat.com/mba/2010/04/ ... he-overlap
Hope this helps.
P.S. - Don't forget to check the comments.
Thanks,
Nikhil
Thanks again
If the problem is Easy Respect it, if the problem is tough Attack it
- goyalsau
- Legendary Member
- Posts: 866
- Joined: Mon Aug 02, 2010 6:46 pm
- Location: Gwalior, India
- Thanked: 31 times
beat_gmat_09 wrote:Good work Brother,,,shovan85 wrote:HI Sourabh and beat_gmat_09,
How does it matter? If the answers do not match also what will be the answer according to you
If the answers are matching then only will it be D? Is it so? How do you know this please let me know.
Where has it been mentioned? Please this will be of real help.
I agree that I have never seen such two different answers from both options but both options individually are sufficient.
Experts may opine please.
Thanks,
Shovan
Hi Shovan,
I digged this very hard for you, this is what i found. These articles need to be archived by year and month, i'm putting a suggestion for this one.
Check this link -
https://www.beatthegmat.com/mba/2010/04/ ... he-overlap
Hope this helps.
P.S. - Don't forget to check the comments.
Thanks,
Nikhil
Saurabh Goyal
[email protected]
-------------------------
EveryBody Wants to Win But Nobody wants to prepare for Win.
[email protected]
-------------------------
EveryBody Wants to Win But Nobody wants to prepare for Win.