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:
If there are 5 positive integers in Set B and the mean is [#permalink]
11 Mar 2010, 05:43
00:00
A
B
C
D
E
Difficulty:
(N/A)
Question Stats:
25% (01:44) correct
75% (00:45) wrong based on 8 sessions
If there are 5 positive integers in Set B and the mean is equal to 7, what is median?
1. The integers in Set B are consecutive and odd
2. The mode is also equal to 7 _________________
Cheers! JT........... If u like my post..... payback in Kudos!!
|Do not post questions with OA|Please underline your SC questions while posting|Try posting the explanation along with your answer choice| |For CR refer Powerscore CR Bible|For SC refer Manhattan SC Guide|
Re: If there are 5 positive integers in Set B and the mean is [#permalink]
11 Mar 2010, 18:25
1
This post received KUDOS
just my interpretation, the mode is the # that appears the most, it does not say that is the only mode. There could in fact be 5 numbers that each appear once and as such are each the mode.
Statement I = Sufficient - Consecutive odd intergers of a 5 # set: mean = median so 7
Statement II = Insufficient
One example 7 7 7 7 7 mean and median are 7 mode is 7 Another example 1 2 3 7 22 mean is 7 mode is 1,2,3,7,22 and median is 3
Re: If there are 5 positive integers in Set B and the mean is [#permalink]
15 Mar 2010, 08:26
1
This post received KUDOS
Should it be D?
1) is quite straight forward
2) Since 7 is the mode, there are at least two 7s.
If there are three or more 7s, the median would be 7.
If there are only two 7s, the set would be: {7 7 a b c} where a+b+c=35-14=21. If a > 7, b or c must be smaller than 7 to give a sum of 21. Hence, 7 will ranked the third (the median) in all scenarios.
Re: If there are 5 positive integers in Set B and the mean is [#permalink]
11 Mar 2010, 13:38
jeeteshsingh wrote:
If there are 5 positive integers in Set B and the mean is equal to 7, what is median?
1. The integers in Set B are consecutive and odd
2. The mode is also equal to 7
st 1 ) for consequetive integers, mean and median are same. Sufficient st 2) mode is 7. We know the total of the number is 7 * 5 = 35 and number 7 occurs more than once. let the other 3 numbers be a,b,c - these number can be equal to 7 or more than 7 or less than 7. - All the 3 numbers cannot be more than 7(in this case mean will be > 7) and all the numbers cannot be less than 7( in this case mean in < 7). So one or two number are more than 7 and the other numbers are less than 7 or some of the numbers could even be 7 .. in any case the median will be 7 as 7 will be the middle number Sufficient
Re: If there are 5 positive integers in Set B and the mean is [#permalink]
12 Mar 2010, 10:38
run4run wrote:
just my interpretation, the mode is the # that appears the most, it does not say that is the only mode. There could in fact be 5 numbers that each appear once and as such are each the mode.
I think if a set has 5 different numbers then it has no mode.
Re: If there are 5 positive integers in Set B and the mean is [#permalink]
12 Mar 2010, 11:53
what's the OA and the source? I think you guys brought up a good point that B kind of contradicts A...and I've never really seen any other question that has this type of contradiction. _________________
Re: If there are 5 positive integers in Set B and the mean is [#permalink]
13 Mar 2010, 17:41
Pedros wrote:
run4run wrote:
just my interpretation, the mode is the # that appears the most, it does not say that is the only mode. There could in fact be 5 numbers that each appear once and as such are each the mode.
I think if a set has 5 different numbers then it has no mode.
If a set has 5 different numbers then the mode is those 5 numbers. For example (1,2,3,4,5); the mode is 1, 2, 3, 4 and 5.
Re: If there are 5 positive integers in Set B and the mean is [#permalink]
14 Mar 2010, 12:38
Yeah I remember reading that in DS all the statements MUST be true. I'm no statistician, but it seems that statement B contradicts statement A as others have mentioned.
statement 1 is "X is a mode of [3, 0, 1, -1, 0, 5, 1]" which suggests that a set can have more than 1 mode
in that case statement 2 does not contradict statement 1 in this question, BUT the phrasing of statement 2 in this case (THE mode) suggests that there is only one...
Re: If there are 5 positive integers in Set B and the mean is [#permalink]
15 Mar 2010, 06:41
bangalorian2000 wrote:
jeeteshsingh wrote:
If there are 5 positive integers in Set B and the mean is equal to 7, what is median?
1. The integers in Set B are consecutive and odd 2. The mode is also equal to 7
1: Sufficient. Let a as first term so mean = a+a+2+a+4+a+6+a+8 = 5a +(2+4+6+8) = 35 hence we can find a and median.
2: Insufficient Mode is 7 so it comes maximum number of times but not sure how many times it can be 2 or 3 or 4 or 5. Hence not sufficient to answer.
Answer should be A. What is the OA.
If the mode is stated to be 7, then it shouldn't matter how many times it happens. The total amount of the 5 numbers in this question has to be 35 and by playing around with numbers a bit, you'll find out that 7 will have to be the median, whether appears only twice, or all five times. _________________
Re: If there are 5 positive integers in Set B and the mean is [#permalink]
15 Mar 2010, 07:14
bakfed wrote:
bangalorian2000 wrote:
jeeteshsingh wrote:
If there are 5 positive integers in Set B and the mean is equal to 7, what is median?
1. The integers in Set B are consecutive and odd 2. The mode is also equal to 7
1: Sufficient. Let a as first term so mean = a+a+2+a+4+a+6+a+8 = 5a +(2+4+6+8) = 35 hence we can find a and median.
2: Insufficient Mode is 7 so it comes maximum number of times but not sure how many times it can be 2 or 3 or 4 or 5. Hence not sufficient to answer.
Answer should be A. What is the OA.
If the mode is stated to be 7, then it shouldn't matter how many times it happens. The total amount of the 5 numbers in this question has to be 35 and by playing around with numbers a bit, you'll find out that 7 will have to be the median, whether appears only twice, or all five times.
Point accepted. Median will be 7 if mode is 7. What is the OA?
The “3 golden nuggets” of MBA admission process With ten years of experience helping prospective students with MBA admissions and career progression, I will be writing this blog through...
You know what’s worse than getting a ding at one of your dreams schools . Yes its getting that horrid wait-listed email . This limbo is frustrating as hell . Somewhere...