GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 16 Nov 2018, 16:34

Close

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

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.

Close

Request Expert Reply

Confirm Cancel
Events & Promotions in November
PrevNext
SuMoTuWeThFrSa
28293031123
45678910
11121314151617
18192021222324
2526272829301
Open Detailed Calendar
  • Free GMAT Strategy Webinar

     November 17, 2018

     November 17, 2018

     07:00 AM PST

     09:00 AM PST

    Nov. 17, 7 AM PST. Aiming to score 760+? Attend this FREE session to learn how to Define your GMAT Strategy, Create your Study Plan and Master the Core Skills to excel on the GMAT.
  • GMATbuster's Weekly GMAT Quant Quiz # 9

     November 17, 2018

     November 17, 2018

     09:00 AM PST

     11:00 AM PST

    Join the Quiz Saturday November 17th, 9 AM PST. The Quiz will last approximately 2 hours. Make sure you are on time or you will be at a disadvantage.

For a certain set of n numbers, where n > 2, is the average (arithmeti

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 50619
For a certain set of n numbers, where n > 2, is the average (arithmeti  [#permalink]

Show Tags

New post 24 Dec 2017, 00:23
00:00
A
B
C
D
E

Difficulty:

  55% (hard)

Question Stats:

53% (01:39) correct 47% (01:26) wrong based on 24 sessions

HideShow timer Statistics

For a certain set of n numbers, where n > 2, is the average (arithmetic mean) equal to the median?

(1) The difference between the smallest number in the set and the middle number is equal to the difference between the largest number and the middle number.
(2) n = 3

_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics

PS Forum Moderator
avatar
D
Joined: 25 Feb 2013
Posts: 1217
Location: India
GPA: 3.82
GMAT ToolKit User Premium Member Reviews Badge
Re: For a certain set of n numbers, where n > 2, is the average (arithmeti  [#permalink]

Show Tags

New post 24 Dec 2017, 04:08
1
Bunuel wrote:
For a certain set of n numbers, where n > 2, is the average (arithmetic mean) equal to the median?

(1) The difference between the smallest number in the set and the middle number is equal to the difference between the largest number and the middle number.
(2) n = 3


Statement 1: if the set is {-1,0,1,1,3}, then 1-(-1)=3-1 but the median is 1 and the average is 0.8. So we have a NO

but if the set is {1,2,3}, then we have a Yes. Insufficient

Statement 2: if we have {1,2,3}. We have a yes but if we have {1,2,9}, then we have a NO. Insufficient

Combining 1 & 2 we know the set has only 3 numbers and Middle-Lowest=Largest-Middle, so the set is an AP series.

In an AP series, with odd number of elements, Median = Mean. Sufficient

Option C
GMAT Club Bot
Re: For a certain set of n numbers, where n > 2, is the average (arithmeti &nbs [#permalink] 24 Dec 2017, 04:08
Display posts from previous: Sort by

For a certain set of n numbers, where n > 2, is the average (arithmeti

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.