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.

TrickyDS question

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 209
Joined: Thu Jan 12, 2012 12:59 pm
by dddanny2006 » Fri Nov 15, 2013 9:18 am
Is mn divisible by 40?
(1)m is divisible by 40
(2)n is divisible by 4




Can anyone help me with this question via the Prime boxes method.

Thanks
Last edited by dddanny2006 on Fri Nov 15, 2013 9:27 am, edited 1 time in total.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Data Sufficiency |
User avatar
Legendary Member
Posts: 1556
Joined: Tue Aug 14, 2012 11:18 pmFollowed by: 34 members
Thanked: 448 times
GMAT Score:650

by theCodeToGMAT » Fri Nov 15, 2013 9:22 am
dddanny2006, one question per thread please
R A H U L
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 209
Joined: Thu Jan 12, 2012 12:59 pm

by dddanny2006 » Fri Nov 15, 2013 9:38 am
Done
theCodeToGMAT wrote:dddanny2006, one question per thread please
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Legendary Member
Posts: 1556
Joined: Tue Aug 14, 2012 11:18 pmFollowed by: 34 members
Thanked: 448 times
GMAT Score:650

by theCodeToGMAT » Fri Nov 15, 2013 9:45 am
To find: mn divisible by 40 ==> mn/4*2*5

So we need atleast single instance of "4", "2" & "5"

Statement 1:
m/40 ---> we got one instance of "4", "2" & "5"
Say m is 40
So, (40)(n)/40 ==> YES
But, "n" can be non-integer.
INSUFFICIENT

Statement 2:
n/4 --> we only got "4"
We don't know whether "m" is divisible by 10 or not.
Say n = 4, m = 15
(15)(4)/40 ==> NO
Say n = 4, m = 10
(4)(10)/40 ==> YES
INSUFFICIENT

Combining...
m/40 & n/4
We got "4", "2" & "5" also "n" is INTEGER.
SUFFICIENT

Answer [spoiler]{C}[/spoiler]
Last edited by theCodeToGMAT on Fri Nov 15, 2013 10:04 am, edited 1 time in total.
R A H U L
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 209
Joined: Thu Jan 12, 2012 12:59 pm

by dddanny2006 » Fri Nov 15, 2013 9:53 am
I'd say statement 1 is insufficient because n may be an integer,say 0.5?
theCodeToGMAT wrote:To find: mn divisible by 40 ==> mn/4*2*5

So we need atleast single instance of "4", "2" & "5"

Statement 1:
m/40 ---> we got one instance of "4", "2" & "5"
Say m is 40
So, (40)(n)/40 ==> YES
SUFFICIENT

Statement 2:
n/4 --> we only got "4"
We don't know whether "m" is divisible by 10 or not.
Say n = 4, m = 15
(15)(4)/40 ==> NO
Say n = 4, m = 10
(4)(10)/40 ==> YES
INSUFFICIENT

Is it Answer [spoiler]{A}[/spoiler]???
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 209
Joined: Thu Jan 12, 2012 12:59 pm

by dddanny2006 » Fri Nov 15, 2013 9:56 am
I'd say statement 1 is insufficient because n could be an integer,say 0.5
theCodeToGMAT wrote:To find: mn divisible by 40 ==> mn/4*2*5

So we need atleast single instance of "4", "2" & "5"

Statement 1:
m/40 ---> we got one instance of "4", "2" & "5"
Say m is 40
So, (40)(n)/40 ==> YES
SUFFICIENT

Statement 2:
n/4 --> we only got "4"
We don't know whether "m" is divisible by 10 or not.
Say n = 4, m = 15
(15)(4)/40 ==> NO
Say n = 4, m = 10
(4)(10)/40 ==> YES
INSUFFICIENT

Is it Answer [spoiler]{A}[/spoiler]???
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Legendary Member
Posts: 1556
Joined: Tue Aug 14, 2012 11:18 pmFollowed by: 34 members
Thanked: 448 times
GMAT Score:650

by theCodeToGMAT » Fri Nov 15, 2013 10:00 am
yeah correct, I cannot assume that "n" is Integer; solution modified.
R A H U L
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1