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.

It appears that you are browsing the GMAT Club forum unregistered!

Signing up is free, quick, and confidential.
Join other 500,000 members and get the full benefits of GMAT Club

Registration gives you:

Tests

Take 11 tests and quizzes from GMAT Club and leading GMAT prep companies such as Manhattan GMAT,
Knewton, and others. All are free for GMAT Club members.

Applicant Stats

View detailed applicant stats such as GPA, GMAT score, work experience, location, application
status, and more

Books/Downloads

Download thousands of study notes,
question collections, GMAT Club’s
Grammar and Math books.
All are free!

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

k, n, 12, 6, 17 What is the value of n in the list above?

(1) k < n (2) The median of the numbers in the list is 10.

I thought n have numerous value here ? Can someone explain where i am going wrong

Perfect example of how simple looking statistics questions can be a little tricky.

k, n, 12, 6, 17

Stmnt 1: k < n No idea what n is. Not sufficient.

Stmnt 2: The median of the list is 10. Since the list has 5 numbers i.e. odd number of numbers, the median must be the middle number i.e. the 3rd number when the numbers in the list are in increasing/decreasing order. Since 10 has to be a number in the list, either k or n has to be 10. But we do not know yet whether k is 10 or n is 10. So we don't know the value of n. Not sufficient.

Using both together, we know one of k and n is 10. We also know that k < n. If k = 10, n is 10.1/11/12/13/14......etc etc etc But then the list becomes: 6, k(10), n, 12, 17 (whatever be the arrangement of last 3 elements). k will not be the middle number in this case and hence 10 will not be the median. If n = 10, k < 10 so the list will look something like: 6, k, n(10), 12, 17 ... Here 10 is the median. n must be 10. Hence, both together are sufficient. _________________

Re: k, n, 12, 6, 17 What is the value of n in the list above? [#permalink]

Show Tags

05 Sep 2007, 14:48

1

This post received KUDOS

sidbidus wrote:

k, n, 12, 6, 17 What is the value of n in the list above?

(1) k < n (2) The median of the numbers in the list is 10.

Vote for C

1 insuff
2 insuff

both, let`s start with 2nd statement, it says median is 10, that means 12 and 17 must come after 10, thus three numbers must be 10, 12 and 17. {median by deffinition is the middle number, when the number of numbers is odd, 5 in this case}, so we have: (some number), 6, 10, 12,17
"some number" can be either n or k, "some number" must be less than 10. Since the 1st statement says that k<n, n is 10, and k is "some number"...

Re: k, n, 12, 6, 17 What is the value of n in the list above? [#permalink]

Show Tags

06 Aug 2008, 10:02

1

This post received KUDOS

chan4312 wrote:

x2suresh wrote:

pmenon wrote:

C for me.

It cant be B since you can have 6,k,n,12,17 or 6,n,k,12,17. Considering both statements together you effectively rule out the second case since k<n. Therefore n=median=10

Yeap!! you are right..

for the second statment I combined both and answered B..

obvisiously it is C.. Oh!! God when will I stop the making care less mistakes..

OA is C. I still can not understand how did you assess the value of k to find the value of n. did you use your cognitive abilities to assess values..or do we have a formula to do it.

How did you find that n is 10.

median of x1,x2,x3,x4,x5 iss x3 ( when you arrange them in ascending order)

We have six numbers given.. k, n, 12, 6, 17 (to find the median arrange then in ascending order) 6,12,17 ( we don't know where k and n com in this order) State 1) says k<n means k alsways comes before n. series can be.. k,n,6,12,17 k,6,12,17,n .... (you get more combinations)..

State 2) median is 10 (that means middle numbe must be 10) __, __, 10,12,17 there are only two posibility with the above combinations 6,_,10,12,17 _,6,10,12,17 here other number_ must be k becaue k<n so 10 must be N. assume that 10 is k then k<n is contradicting.

Hope this will help you. _________________

Your attitude determines your altitude Smiling wins more friends than frowning

Re: k, n, 12, 6, 17 What is the value of n in the list above? [#permalink]

Show Tags

06 Aug 2008, 08:36

chan4312 wrote:

k, n, 12, 6, 17 What is the value of n in the list above?

(1) k < n (2) The median of the numbers in the list is 10.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient. C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. D. EACH statement ALONE is sufficient. E. Statements (1) and (2) TOGETHER are NOT sufficient.

1) insuffciient (two variables..) we don't the pattern

2) k, n, 12, 6, 17 re arrange in the ascending order.. following two combinations are possible. either way n is median.. so n=10 6 ,k, n, 12,17 k,6, n, 12,17

B is the answer _________________

Your attitude determines your altitude Smiling wins more friends than frowning

Re: k, n, 12, 6, 17 What is the value of n in the list above? [#permalink]

Show Tags

06 Aug 2008, 08:51

C for me.

It cant be B since you can have 6,k,n,12,17 or 6,n,k,12,17. Considering both statements together you effectively rule out the second case since k<n. Therefore n=median=10

Re: k, n, 12, 6, 17 What is the value of n in the list above? [#permalink]

Show Tags

06 Aug 2008, 09:11

pmenon wrote:

C for me.

It cant be B since you can have 6,k,n,12,17 or 6,n,k,12,17. Considering both statements together you effectively rule out the second case since k<n. Therefore n=median=10

Yeap!! you are right..

for the second statment I combined both and answered B..

obvisiously it is C.. Oh!! God when will I stop the making care less mistakes.. _________________

Your attitude determines your altitude Smiling wins more friends than frowning

Re: k, n, 12, 6, 17 What is the value of n in the list above? [#permalink]

Show Tags

06 Aug 2008, 09:30

x2suresh wrote:

pmenon wrote:

C for me.

It cant be B since you can have 6,k,n,12,17 or 6,n,k,12,17. Considering both statements together you effectively rule out the second case since k<n. Therefore n=median=10

Yeap!! you are right..

for the second statment I combined both and answered B..

obvisiously it is C.. Oh!! God when will I stop the making care less mistakes..

OA is C. I still can not understand how did you assess the value of k to find the value of n. did you use your cognitive abilities to assess values..or do we have a formula to do it.

Re: k, n, 12, 6, 17 What is the value of n in the list above? [#permalink]

Show Tags

06 Aug 2008, 17:26

chan4312 wrote:

k, n, 12, 6, 17 What is the value of n in the list above?

(1) k < n (2) The median of the numbers in the list is 10.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient. C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. D. EACH statement ALONE is sufficient. E. Statements (1) and (2) TOGETHER are NOT sufficient.

lets arrange the numbers in increasing order : 6 12 17 with k,n occurring anywhere

hence consider (1) k < n --------> it does not help in finding n (2) median of numbers is 10 => k,n can occur anywhere hence either k or n can be 10 (1) & (2) cannot help since k <n does not say whether k=10 or n=10

Re: k, n, 12, 6, 17 What is the value of n in the list above? [#permalink]

Show Tags

06 Dec 2010, 18:48

Karishma, Thanks a tonne. Awesome. I wasted a quite some time on this question. Could you please give some pointer as to how to deal with type of question in future. _________________

Karishma, Thanks a tonne. Awesome. I wasted a quite some time on this question. Could you please give some pointer as to how to deal with type of question in future.

Practice some questions based on Median. Tag search for some on this forum itself. Median is the most time consuming to figure out in case of missing values or new values. Sometimes range can also be fun. If you get stuck somewhere, let me know...

I intend to write a complete post on statistics concepts soon. Check out http://www.veritasprep.com/blog/ and search for 'Quarter Wit Quarter Wisdom' (That is the tag I use to put my posts.) Look for statistics post in the coming weeks. _________________

Re: k, n, 12, 6, 17 What is the value of n in the list above? [#permalink]

Show Tags

08 Dec 2010, 00:22

wow very tricky. I selected the trap answer E by quickly coming to the conclusion that I couldn't tell even with both statements whether k or n was the median so would not N's value.

Re: k, n, 12, 6, 17 What is the value of n in the list above? [#permalink]

Show Tags

28 Feb 2015, 20:19

Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email. _________________

k, n, 12, 6, 17 What is the value of n in the list above?

(1) k < n (2) The median of the numbers in the list is 10.

k, n, 12, 6, 17 What is the value of n in the list above?

Given list: {k, n, 6, 12, 17}

(1) k < n. Clearly insufficient. (2) The median of the numbers in the list is 10 --> now, the list contains odd # of terms, thus its median is the middle term and since no other term is 10 then either n or k must be 10, but we don't know which one. Not sufficient.

(1)+(2) Since from (1) k<n then k=10=median is not possible, because in this case 3 terms will be greater than k (n, 12, and 17) and it won't be the middle term (it'll be the second term), for example {6, k=10, n, 12, 17}. Thus n must be 10. Sufficient.

This is the kickoff for my 2016-2017 application season. After a summer of introspect and debate I have decided to relaunch my b-school application journey. Why would anyone want...

Check out this awesome article about Anderson on Poets Quants, http://poetsandquants.com/2015/01/02/uclas-anderson-school-morphs-into-a-friendly-tech-hub/ . Anderson is a great place! Sorry for the lack of updates recently. I...

Time is a weird concept. It can stretch for seemingly forever (like when you are watching the “Time to destination” clock mid-flight) and it can compress and...