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.

Proabity: Concept

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 271
Joined: Tue May 22, 2012 3:22 amFollowed by: 3 members
Thanked: 7 times
by \'manpreet singh » Wed Nov 14, 2012 10:22 pm
q.1 If seven people board an airport shuttle with only three available seats, how
many different seating arrangements are possible? (Assume that three of
the seven will actually take the seats.)

q.2 If three of seven standby passengers are selected for a flight, how many
different combinations of standby passengers can be selected?

Please explain how are these 2 questions different?I need a comparison as i feel a little unclear about the concept here?
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
User avatar
Master | Next Rank: 500 Posts
Posts: 435
Joined: Mon Mar 15, 2010 6:15 amFollowed by: 1 member
Thanked: 32 times

by eaakbari » Wed Nov 14, 2012 11:38 pm
If I asked you to cite an example on the difference between permutations & combinations, your question is the perfect answer.

In (1) , they are asking for the arrangement ABC is different from BCA. They keyword here is 'arrangement'. Thats when you know its a permutation.
Answer = n(P)r

In (2), BCA is no different from ABC. Hence its a combination.
Answer = n(C)r
Whether you think you can or can't, you're right.
- Henry Ford
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 271
Joined: Tue May 22, 2012 3:22 amFollowed by: 3 members
Thanked: 7 times

by \'manpreet singh » Thu Nov 15, 2012 12:01 am
eaakbari wrote:If I asked you to cite an example on the difference between permutations & combinations, your question is the perfect answer.

In (1) , they are asking for the arrangement ABC is different from BCA. They keyword here is 'arrangement'. Thats when you know its a permutation.
Answer = n(P)r

In (2), BCA is no different from ABC. Hence its a combination.
Answer = n(C)r

Thanks for your quick repsonse,
But that's whats confusing me.....forget about permutation and combination.If we take to counting method.How are you saying that in first case ABC is different from BCA, meaning they are distinguihable from one another and in second question ABC is same as BCA,meaning they are undistinguishable . How are you conculding these two statements, i basically need clarity on that.

=======================================
Singh
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1