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

It is currently 15 Dec 2018, 01:15

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 December
PrevNext
SuMoTuWeThFrSa
2526272829301
2345678
9101112131415
16171819202122
23242526272829
303112345
Open Detailed Calendar
  • Free GMAT Strategy Webinar

     December 15, 2018

     December 15, 2018

     07:00 AM PST

     09:00 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.
  • $450 Tuition Credit & Official CAT Packs FREE

     December 15, 2018

     December 15, 2018

     10:00 PM PST

     11:00 PM PST

    Get the complete Official GMAT Exam Pack collection worth $100 with the 3 Month Pack ($299)

If a,b and c are in arithmetic progression, then (a+b)

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

Hide Tags

Director
Director
User avatar
P
Joined: 20 Sep 2016
Posts: 541
GMAT ToolKit User CAT Tests
If a,b and c are in arithmetic progression, then (a+b)  [#permalink]

Show Tags

New post 23 Nov 2018, 22:32
00:00
A
B
C
D
E

Difficulty:

  85% (hard)

Question Stats:

18% (01:05) correct 82% (01:10) wrong based on 33 sessions

HideShow timer Statistics

If a,b and c are in arithmetic progression, then (a+b), (b+c) and (c+a) (in any order) can be in:

A. Arithmetic progression
B. Geometric progression
C. Harmonic progression
D. AP or GP
E. AP or GP or HP

Posted from my mobile device
Manager
Manager
User avatar
S
Joined: 08 Sep 2008
Posts: 110
Location: India
Concentration: Operations, General Management
Schools: ISB '20
GPA: 3.8
WE: Operations (Transportation)
CAT Tests
Re: If a,b and c are in arithmetic progression, then (a+b)  [#permalink]

Show Tags

New post 24 Nov 2018, 00:32
Suppose a,b,c is 1,1,and 1 ( this is AP as common difference zero, GP common factor 1, and HP as the reciprocals are in AP)
So if we take (a+b), (b+c) and (c+a) (in any order)
It will be in AP or GP or HP.
Answer E.
_________________

Regards;
Vishal

+==========+
Kudos if it deserve....one...

Senior Manager
Senior Manager
User avatar
S
Joined: 08 Aug 2017
Posts: 279
Re: If a,b and c are in arithmetic progression, then (a+b)  [#permalink]

Show Tags

New post 24 Nov 2018, 04:39
How did you assume all numbers same?
Director
Director
User avatar
P
Joined: 20 Sep 2016
Posts: 541
GMAT ToolKit User CAT Tests
Re: If a,b and c are in arithmetic progression, then (a+b)  [#permalink]

Show Tags

New post 24 Nov 2018, 04:43
gvij2017 wrote:
How did you assume all numbers same?


Read the question carefully... It says "can be" so you can assume whatever you want..

Posted from my mobile device
Senior Manager
Senior Manager
User avatar
S
Joined: 08 Aug 2017
Posts: 279
Re: If a,b and c are in arithmetic progression, then (a+b)  [#permalink]

Show Tags

New post 24 Nov 2018, 04:52
Don't you think that "Can be" is used for a+b, b+c, c+a, not for a, b and c.
Language of question seems ambiguous.
Director
Director
User avatar
P
Joined: 20 Sep 2016
Posts: 541
GMAT ToolKit User CAT Tests
Re: If a,b and c are in arithmetic progression, then (a+b)  [#permalink]

Show Tags

New post 24 Nov 2018, 04:54
It is an official question by GMAC my friend. And the "can be" is intended for a b and c only

Posted from my mobile device
GMAT Club Bot
Re: If a,b and c are in arithmetic progression, then (a+b) &nbs [#permalink] 24 Nov 2018, 04:54
Display posts from previous: Sort by

If a,b and c are in arithmetic progression, then (a+b)

  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®.