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.

divisibility

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |
Newbie | Next Rank: 10 Posts
Posts: 7
Joined: Fri Nov 26, 2010 1:10 am

by puneet.goel » Wed Sep 07, 2011 11:04 pm
For Z! to be divisible by 340 ,Z should have all the prime factors of 340.
The factors are : 17*2*2*5.

17 is a prime number and z should include it. so Z! can not be less then 17.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Legendary Member
Posts: 540
Joined: Sat Dec 20, 2008 7:24 pmFollowed by: 6 members
Thanked: 37 times

by navami » Thu Sep 08, 2011 6:05 am
340 can be written as 340 = 4* 5* 17

Now any number Z. Z! to be divisible by 340
so Z! shall contain 340 in it means
Z! = 340 * some other number.
Z! = 4* 5* 17 * Some other number


now imagine Z is 5
Z! = 5 * 4* 3* 2*1
now imagine Z is 4
Z! = 4* 3* 2*1

Z can only be 17 or higher
Z! = 17! will have 17 and also 5 and 4
This time no looking back!!!
Navami
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
GMAT Instructor
Posts: 509
Joined: Wed Apr 21, 2010 1:08 pmFollowed by: 85 members
Location: Irvine, CA
Thanked: 199 times
GMAT Score:750

by tpr-becky » Fri Sep 09, 2011 12:56 pm
Factorials are normally an invitation to factor - if you factor out 340 - you get 2(2)(5)(17) this means that z! must be divisible by each of these - since 17 is prime z! must contain a 17 for it to be divisible by 17 - becuase it is a factorial the only way for it to contain a 17 is for z >= 17 thus the smallest z can be is 17.

Kick off your GMAT prep with a free practice exam. After the test, we'll give you a detailed performance report with personalized tips on how to improve your score. https://www.princetonreview.com/business ... -test.aspx.
Becky
Master GMAT Instructor
The Princeton Review
Irvine, CA
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1