BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

★★★★★5.0559 reviews
GMATLiveTeach Starts Oct 17
Chris Peckover, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Chris Peckover, 100th-Percentile GMAT Scorer

Oct 17 · Chris Peckover
Sat · 11:00 AM to 2:00 PM ET
Oct 20 · Chris Peckover
Tue, Thu · 8:00 to 10:00 PM ET
Oct 25 · Josh Braslow
Sun · 1:00 to 4:00 PM ET
Included
40 hours of live online classes + 6 months of TTP OnDemand
  • Attend the first class for free
  • Every class is recorded, so you never fall behind
View classes & enroll
Limited seats availableTarget Test Prep
EALiveTeachOnDemand 5 seats left Start anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

165+ EA score guarantee
$05-day trial no automatic billing
Schedule
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll Start free 5-day trial
Limited cohort · enrollment openTrial includes full course accessTarget Test Prep
GMATOnDemand Start anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions
Start free 5-day trial
Read 559 reviewsTarget Test Prep

Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.

range of a set consisting of odd multiples of 7?

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |
User avatar
Master | Next Rank: 500 Posts
Posts: 233
Joined: Mon Jun 09, 2008 1:30 am
Thanked: 5 times

by blaster » Fri Dec 24, 2010 2:32 am
the range of set is = max - min
if the set is consisting only numbers which is multiple of 7, the the range also must be multiple of 7 . for example 21-7,28-7 etc. only C and E remains
but here we have another restriction. set must consist only odd numbers. if odd-odd,the result must be even. so answer is E
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 3835
Joined: Fri Apr 02, 2010 10:00 pmFollowed by: 523 members
Location: Milpitas, CA
Thanked: 1854 times
GMAT Score:770

by Anurag@Gurome » Fri Dec 24, 2010 5:38 am
sachin_yadav wrote:Which of the following could be the range of a set consisting of odd multiples of 7?

(A) 21
(B) 24
(C) 35
(D) 62
(E) 70
The set may consist any of the following integers 7, 21, 35, 49, 63, ... etc.
Not that difference between any two numbers of the above list is an even multiple of 7. Thus range must be an even multiple of 7. Only option E works.

The correct answer is E.
Anurag Mairal, Ph.D., MBA
GMAT Expert, Admissions and Career Guidance
Gurome, Inc.
1-800-566-4043 (USA)

Join Our Facebook Groups
GMAT with Gurome
https://www.facebook.com/groups/272466352793633/
Admissions with Gurome
https://www.facebook.com/groups/461459690536574/
Career Advising with Gurome
https://www.facebook.com/groups/360435787349781/
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 212
Joined: Mon Dec 06, 2010 12:52 amFollowed by: 1 member
Location: India
Thanked: 5 times

by sachin_yadav » Fri Dec 24, 2010 11:36 am
Anurag@Gurome wrote:
The set may consist any of the following integers 7, 21, 35, 49, 63, ... etc.
Not that difference between any two numbers of the above list is an even multiple of 7. Thus range must be an even multiple of 7. Only option E works.

The correct answer is E.
Anurag thank you very much for you reply. So, you mean to say that out of:-
(A) 21
(B) 24
(C) 35
(D) 62
(E) 70

70 is the only even multiple of 7, as 21 and 35 are the odd multiples of 7, and 24 and 62 are not multiples of 7 ?

waiting for your reply.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Legendary Member
Posts: 543
Joined: Tue Jun 15, 2010 7:01 pmFollowed by: 3 members
Thanked: 147 times

by anshumishra » Fri Dec 24, 2010 11:48 am
sachin_yadav wrote:
Anurag@Gurome wrote:
The set may consist any of the following integers 7, 21, 35, 49, 63, ... etc.
Not that difference between any two numbers of the above list is an even multiple of 7. Thus range must be an even multiple of 7. Only option E works.

The correct answer is E.
Anurag thank you very much for you reply. So, you mean to say that out of:-
(A) 21
(B) 24
(C) 35
(D) 62
(E) 70

70 is the only even multiple of 7, as 21 and 35 are the odd multiples of 7, and 24 and 62 are not multiples of 7 ?

waiting for your reply.
Sachin,

Here is the question : Which of the following could be the range of a set consisting of odd multiples of 7?

Let's write some of the possible sets :
{7,21} - Range = 21-7 = 14
{7,21,35} - Range = 35 - 7 = 28
{7,21,35,49} - Range = 49 - 7 = 42
and so on...

So they are of the form = 7*2n
The only value which satisfy this is E (70 = 7*2*5)

Hope, it helps !
Thanks
Anshu

(Every mistake is a lesson learned )
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 212
Joined: Mon Dec 06, 2010 12:52 amFollowed by: 1 member
Location: India
Thanked: 5 times

by sachin_yadav » Fri Dec 24, 2010 12:31 pm
anshumishra wrote:
Sachin,

Here is the question : Which of the following could be the range of a set consisting of odd multiples of 7?

Let's write some of the possible sets :
{7,21} - Range = 21-7 = 14
{7,21,35} - Range = 35 - 7 = 28
{7,21,35,49} - Range = 49 - 7 = 42
and so on...

So they are of the form = 7*2n
The only value which satisfy this is E (70 = 7*2*5)

Hope, it helps !
Thank you so much Anshu. This has cleared my doubt.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Junior | Next Rank: 30 Posts
Posts: 20
Joined: Tue Oct 29, 2013 8:38 pmFollowed by: 2 members

by StrawberryCow » Mon Apr 14, 2014 1:26 pm
Anurag@Gurome wrote:
sachin_yadav wrote:Which of the following could be the range of a set consisting of odd multiples of 7?

(A) 21
(B) 24
(C) 35
(D) 62
(E) 70
The set may consist any of the following integers 7, 21, 35, 49, 63, ... etc.
Not that difference between any two numbers of the above list is an even multiple of 7. Thus range must be an even multiple of 7. Only option E works.

The correct answer is E.
The way I solved this is:

The set may consist any of the following integers 7, 21, 35, 49, 63, ... etc.
Note that the difference between any two consecutive terms here is 14. So the range should be divisible by 14.And there is only one answer option i.e., E - 70 which is divisible by 14.

Not sure if this is the correct way to solve this. But it worked.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY

GMAT/MBA Expert

User avatar
Elite Legendary Member
Posts: 10392
Joined: Sun Jun 23, 2013 6:38 pmFollowed by: 511 members
Location: Palo Alto, CA
Thanked: 2867 times
GMAT Score:800

by [email protected] » Mon Apr 14, 2014 11:21 pm
Hi StrawberryCow,

Your deduction is correct. It also goes to show how GMAT questions are pattern-based. Your ability to deduce the pattern makes this question quite easy to answer. Keep your eye out for patterns in all sections of the Test; they'll help you to solve questions with less work and in less time.

GMAT assassins aren't born, they're made,
Rich
Contact Rich at [email protected]
Image
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1