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 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!- Dec 17
09:00 AM PST
-10:00 AM PST
Join Manhattan Prep instructor Whitney Garner for a fun—and thorough—review of logic-based (non-math) problems, with a particular emphasis on Data Sufficiency and Two-Parts. - Dec 18
10:00 AM PST
-11:00 AM PST
Here is the essential guide to securing scholarships as an MBA student! In this video, we explore the various types of scholarships available, including need-based and merit-based options.
21 Oct 2019, 23:31
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
88% (00:32) correct
12%
(00:44)
wrong
based on 59
sessions
History
Date
Time
Result
Not Attempted Yet
What is the average of a list of n consecutive integers?
(1) The smallest number in the list is 5.
(2) n = 8
(1) The smallest number in the list is 5.
(2) n = 8
25 Oct 2019, 14:10
Kudos
Bookmarks
A list of consecutive integers is equally spaced, so its mean and median will be equal. Using Statement 1, we clearly don't know the median without knowing how many terms are in the list, and using Statement 2 we clearly don't know the median since we have no idea how large the numbers in the list are. Using both Statements, we can write down the entire list, so we can clearly answer any question at all about it, and the answer is C.
18 Nov 2019, 05:23
Kudos
Bookmarks
bloublou
Hello,
With no mention of the interval in the question stem, why shall we assume that the interval is 1?
I was expecting an info on this variable as the question is leaving an opportunity for traps by not mentioning anything on the interval. If the stem would have used "a set of evenly spaced consecutive integers" or "a set of consecutive integers multiple of 3" I would agree, but here I feel like the set 5 - 10 - 15 - 20 - 25 - 30 - 35 - 40 would be a possible answer.
Please share what you think,
B
With no mention of the interval in the question stem, why shall we assume that the interval is 1?
I was expecting an info on this variable as the question is leaving an opportunity for traps by not mentioning anything on the interval. If the stem would have used "a set of evenly spaced consecutive integers" or "a set of consecutive integers multiple of 3" I would agree, but here I feel like the set 5 - 10 - 15 - 20 - 25 - 30 - 35 - 40 would be a possible answer.
Please share what you think,
B
The stem says: What is the average of a list of n consecutive integers?
Consecutive integers are integers that follow one another, without skipping any integers. So, "consecutive integers" ALWAYS mean integers that follow each other in order with common difference of 1: ... x-3, x-2, x-1, x, x+1, x+2, ....
Examples:
7, 8, 9, and -2, -1, 0, 1, are consecutive integers.
2, 4, 6 ARE NOT consecutive integers, they are consecutive even integers.
3, 5, 7 ARE NOT consecutive integers, they are consecutive odd integers.
5, 10, 15, ... ARE NOT consecutive integers, they are consecutive positive multiples of 5.
For more on this check Formulas for Consecutive Integers, Even integers, Odd Integers, etc.
Hope it helps.
