It is currently 16 Dec 2018, 21:02
My Tests

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.

If the average (arithmetic mean) of seven consecutive intege

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
1 KUDOS received
Director
Director
User avatar
Joined: 07 Jan 2018
Posts: 555
Followers: 4

Kudos [?]: 482 [1] , given: 84

CAT Tests
If the average (arithmetic mean) of seven consecutive intege [#permalink] New post 13 Jun 2018, 22:21
1
This post received
KUDOS
00:00

Question Stats:

60% (01:40) correct 40% (01:46) wrong based on 5 sessions
If the average (arithmetic mean) of seven consecutive integers is k + 2, then the product of the greatest and least integer is ?

A. \(k^2\) – 9


B. \(k^2\) – 2k + 1


C. \(k^2\) + 4k – 12


D. \(k^2\) + 6k + 9


E. \(k^2\) + 4k – 5
[Reveal] Spoiler: OA
Director
Director
Joined: 20 Apr 2016
Posts: 761
Followers: 6

Kudos [?]: 517 [0], given: 94

CAT Tests
Re: If the average (arithmetic mean) of seven consecutive intege [#permalink] New post 27 Jun 2018, 01:39
amorphous wrote:
If the average (arithmetic mean) of seven consecutive integers is k + 2, then the product of the greatest and least integer is ?

A. \(k^2\) – 9


B. \(k^2\) – 2k + 1


C. \(k^2\) + 4k – 12


D. \(k^2\) + 6k + 9


E. \(k^2\) + 4k – 5


Here
we know k + 2 is the Arithmetic Mean and there are 7 nos

SO the numbers are; K - 1, K , K + 2 , K + 3, K + 4, K + 5

i.e. arithmetic mean = \(\frac{{(K - 1) + (K) + (K + 2) + (K + 3) + (K + 4) + K + 5)}}{7}\)= k + 2

So the greatest number = k + 5 and the smallest number = K - 1

So the product =(k + 5) * (k - 1) = \(k^2\) + 4k – 5
_________________

If you found this post useful, please let me know by pressing the Kudos Button

Re: If the average (arithmetic mean) of seven consecutive intege   [#permalink] 27 Jun 2018, 01:39
Display posts from previous: Sort by

If the average (arithmetic mean) of seven consecutive intege

  Question banks Downloads My Bookmarks Reviews Important topics  


GRE Prep Club Forum Home| About| Terms and Conditions and Privacy Policy| GRE Prep Club Rules| Contact

Powered by phpBB © phpBB Group

Kindly note that the GRE® test is a registered trademark of the Educational Testing Service®, and this site has neither been reviewed nor endorsed by ETS®.