Forum Home > GMAT > Quantitative > Problem Solving (PS)
Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Dec 1310:00 AM EST
-12:00 PM EST
Have you ever wondered how to score a PERFECT 805 on the GMAT? Meet Julia, a banking professional who used the Target Test Prep course to achieve this incredible feat. Julia's story is nothing short of an inspiration.
Dec 1410:00 AM EST
-12:00 PM EST
Think a 100% GMAT Verbal score is out of your reach? Target Test Prep will make you think again! Our course uses techniques such as topical study and spaced repetition to maximize knowledge retention and make studying simple and fun.
Dec 1411:00 AM IST
-01:00 PM IST
Attend this session to learn how to Deconstruct arguments, Pre-Think Author’s Assumptions, and apply Negation Test.- Dec 15
11:00 AM IST
-01:00 PM IST
Attend this free GMAT Algebra Webinar and learn how to master the most challenging Inequalities and Absolute Value problems with ease. 
Dec 1608:00 AM PST
-11:59 PM PST
GMAT Club 12 Days of Christmas is a 4th Annual GMAT Club Winter Competition based on solving questions. This is the Winter GMAT competition on GMAT Club with an amazing opportunity to win over $40,000 worth of prizes!
13 Aug 2017, 23:23
Kudos
Bookmarks
A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
63% (01:16) correct
38%
(00:42)
wrong
based on 8
sessions
History
Date
Time
Result
Not Attempted Yet
There are 13 terms in an evenly spaced set. What is the sum of all the terms?
(1) 7th term of the set is 47.
(2) 1st term of the set is 5.
Source: Self-made
(1) 7th term of the set is 47.
(2) 1st term of the set is 5.
Source: Self-made
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!
13 Aug 2017, 23:55
Kudos
Bookmarks
If the set is evenly spaced, the terms in this set are in an AP.
The mean = median for such evenly spaces sets.
Since, there are 13 terms in the set, the mean = median = 7th term
1. 7th term of the set is 47.
The sum is 13 * 7th element. (Sufficient)
2. 1st term of the set is 5.
Without knowing the common difference of the terms
it is not possible to find out the sum of the terms.
If the common difference is 2, the numbers are 5,7,9,11....
where as if the common difference is 3, the numbers are 5,8,11,14....
So, we cannot arrive at a constant mean or median,
because of which we cannot clearly give the sum of the terms of the set.(Insufficient)(Option A)
The mean = median for such evenly spaces sets.
Since, there are 13 terms in the set, the mean = median = 7th term
1. 7th term of the set is 47.
The sum is 13 * 7th element. (Sufficient)
2. 1st term of the set is 5.
Without knowing the common difference of the terms
it is not possible to find out the sum of the terms.
If the common difference is 2, the numbers are 5,7,9,11....
where as if the common difference is 3, the numbers are 5,8,11,14....
So, we cannot arrive at a constant mean or median,
because of which we cannot clearly give the sum of the terms of the set.(Insufficient)(Option A)
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!
Moderators:
