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:
In a nationwide poll, N people were interviewed. If 1/4 of [#permalink]
02 Nov 2003, 13:41
2
This post received KUDOS
13
This post was BOOKMARKED
00:00
A
B
C
D
E
Difficulty:
35% (medium)
Question Stats:
68% (02:33) correct
32% (02:15) wrong based on 684 sessions
In a nationwide poll, N people were interviewed. If 1/4 of them answered "yes" to question 1, and of those, 1/3 answered "yes" to question 2, which of the following expressions represents the number of people interviewed who did NOT answer "yes" to both questions?
Q1 {N} ------------------------------------------- YES {N/4} NO {3N/4} --------------------- ----------------- yes Q2 no Q2 yesQ2 noQ2 {N/12} {N/6} ???
I always approach these kinds of sums with flowcharts(for eg. #124).Here what we need is denoted by a question mark.i.e. NO on both questions.I don't understand this,we have no idea of how 3N/4 is broken up.Help?? _________________
In a nationwide poll, N people were interviewed. If 1/4 of them answered "yes" to question 1, and of those, 1/3 answered "yes" to question 2, which of the following expressions represents the number of people interviewed who did NOT answer "yes" to both questions?
A N/7
B 6N/7
C 5N/12
D 7N/12
E 11N/12
Can anyone, please, explain, why result is E? And post OA. I am getting completely different result: 2/3N. If there are 1/4N people answered yes to q1 and 1/3 of those answered yes to q2. Thus, people who answered yes to q2 is 1/12. and total no of people ans yes is 1/12+1/4=1/3N.
So, those who answered NO: N-1/3N=2/3N. What do I do wrong? help appreciated. _________________
Can anyone, please, explain, why result is E? And post OA. I am getting completely different result: 2/3N. If there are 1/4N people answered yes to q1 and 1/3 of those answered yes to q2. Thus, people who answered yes to q2 is 1/12. and total no of people ans yes is 1/12+1/4=1/3N.
So, those who answered NO: N-1/3N=2/3N. What do I do wrong? help appreciated.
One of the GMAT tricks. Do not overcomplicate - they ask for the mumber of people who did not answer "yes" to BOTH questions, while you are calculating "not yes for ANY of the 2 questions"
Can anyone, please, explain, why result is E? And post OA. I am getting completely different result: 2/3N. If there are 1/4N people answered yes to q1 and 1/3 of those answered yes to q2. Thus, people who answered yes to q2 is 1/12. and total no of people ans yes is 1/12+1/4=1/3N.
So, those who answered NO: N-1/3N=2/3N. What do I do wrong? help appreciated.
One of the GMAT tricks. Do not overcomplicate - they ask for the mumber of people who did not answer "yes" to BOTH questions, while you are calculating "not yes for ANY of the 2 questions"
E should be correct
Ok, thanks. So does question asks ("of those") meaning of all people? _________________
Yes i too go with the answer of 11N/12. The trick here is the number of people who have not answered YES to both questions is not the same as the number of people who have answered NO to both questions. It could be that they had answered YES to only one of the questions or NO to both questions.
I solved it in a different approach (with a calculated guess):
N/4 says Yes to Q1. So, 3N/4 will say No to Q1.So, the final number has to be >=3N/4.
On looking the choices B and E remains. We cant have 7 in the denominator, so E is the answer
sudzpwc wrote:
In a nationwide poll, N people were interviewed. If 1/4 of them answered "yes" to question 1, and of those, 1/3 answered "yes" to question 2, which of the following expressions represents the number of people interviewed who did NOT answer "yes" to both questions?
So first we figure out what proportion of N did answer yes to both questions. 1/3 answered yes to #1 and of those 1/4 answered yes to #2. Thus 1/3 times 1/4=1/12N answered yes to both. Now it is simple subtraction to find those who did not vote yes on both. 11/12N. So the answer should be E.
If you found these comments helpful, please give kudos. Thanks, Skip
Bunuel, can you please look at this question. I personally got E for the answer. But after giving it some thought, I started to doubt it. My reasoning goes like this:
Total: 36
Yes to 1: 9 Yes to 1 and Yes to 2: 1/3 * 9 = 3
No to 1: 36-9 = 27 No to 1 No to 2: ? No to 1 Yes to 2: ?
So, I don't know how we can calculate No 1 No to 2. I guess that's what the question asks.
In a nationwide poll, N people were interviewed. If 1/4 of them answered "yes" to question 1, and of those, 1/3 answered "yes" to question 2, which of the following expressions represents the number of people interviewed who did NOT answer "yes" to both questions?
A N/7 B 6N/7 C 5N/12 D 7N/12 E 11N/12
Bunuel, can you please look at this question. I personally got E for the answer. But after giving it some thought, I started to doubt it. My reasoning goes like this:
Total: 36
Yes to 1: 9 Yes to 1 and Yes to 2: 1/3 * 9 = 3
No to 1: 36-9 = 27 No to 1 No to 2: ? No to 1 Yes to 2: ?
So, I don't know how we can calculate No 1 No to 2. I guess that's what the question asks.
Thank you.
No, the question asks for {No,No}, {No,Yes}, {Yes,No} any combination but {Yes,Yes}: "the number of people interviewed who did NOT answer "yes" to both questions".
If we use your example then: 1/4th of 36 or 9 people answered YES to question 1. Of those, 1/3 answered "yes" to question 2, so 1/3rd of 9 or 3 people answered YES to BOTH question 1 and 2. So YES to both questions answered 3/36=1/12 of N people interviewed and 1-1/12=11/12 of N people interviewed did NOT answer "yes" to both questions.
Re: In a nationwide poll, N people were interviewed. If 1/4 of [#permalink]
05 Jul 2014, 20:14
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. _________________
In a nationwide poll, N people were interviewed. If 1/4 of [#permalink]
02 Jan 2015, 01:38
I tried to do this question by making a table. But I was not able to get the answer!! have someone solved using table? ---------------------------------- | ----- | YQ1 | NQ1 | ---------------------------------- | YQ2 | ---------------------------------- | NQ2 | ---------------------------------- Total | _________________
KUDOS please!! If it helped. Warm Regards. Visit My Blog
gmatclubot
In a nationwide poll, N people were interviewed. If 1/4 of
[#permalink]
02 Jan 2015, 01:38
As I’m halfway through my second year now, graduation is now rapidly approaching. I’ve neglected this blog in the last year, mainly because I felt I didn’...
Perhaps known best for its men’s basketball team – winners of five national championships, including last year’s – Duke University is also home to an elite full-time MBA...
Hilary Term has only started and we can feel the heat already. The two weeks have been packed with activities and submissions, giving a peek into what will follow...