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 7 seats left
Chris Peckover
NEXT LIVE COHORT

Oct 13 to Jan 7, 2027

with Chris Peckover

Schedule
Tue, Thu · 8:00 to 10:00 PM ET
Included
40 live hours + 6 months of GMAT OnDemand
  • Live instruction and real-time questions
  • Class recordings and assigned practice
View class & enroll
Limited cohort · enrollment openTarget Test Prep
EALiveTeach 5 seats left
Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

Schedule
Sun · 9:30 AM to 12:30 PM ET
Included
Live EA class + 6 months of EA OnDemand
  • Expert-led weekly online sessions
  • EA Masterclass access between classes
View EA class & enroll
Limited cohort · enrollment openTarget Test Prep
GMATOnDemand Start anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

130-point 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.

Combinationa nd Permutation

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 110
Joined: Sun May 25, 2008 3:45 pm
by ajmoney09 » Sun Jan 18, 2009 9:23 pm
Can someone explain me the easiest way to figure out these questions....I always get lost on these problems. Seem to never get the right answer either. If someone has a quick fix for me that would be amazing. I am good at math so you wouldn't confuse me, as long as you explain your steps and don't skip any steps because reading it i would get lost. And if you have a gooood practice problem to post that shows the ins and out of these types that would be most useful as well.

Thanks,
AJ
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
User avatar
Legendary Member
Posts: 2134
Joined: Mon Oct 20, 2008 11:26 pmFollowed by: 25 members
Thanked: 237 times
GMAT Score:730

by logitech » Mon Jan 19, 2009 12:40 am
Check this out
Attachments
prob.doc
(55.5 KiB) Downloaded 127 times
LGTCH
---------------------
"DON'T LET ANYONE STEAL YOUR DREAM!"
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 110
Joined: Sun May 25, 2008 3:45 pm

by ajmoney09 » Wed Jan 21, 2009 9:20 pm
Thanks Log

I will look over this.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 138
Joined: Thu Jan 15, 2009 7:52 am
Location: Steamboat Springs, CO
Thanked: 15 times

by gaggleofgirls » Wed Jan 21, 2009 10:12 pm
The big difference between combinations and permutations is that permutations have a specific order to them and combinations don't.

If I want a subcommitee of 3 out of a group of 5 (a,b,c,d,e), this is a combination - a,b,c is the same as b,a,c is the same as c,a,b and they all represent just a single choice.

If there is order involved, then it is a permutation. If I am going to pick the president, then VP then Sec of State from the group of 5 (a,b,c,d,e) then
a= pres, b=vp, c=SoS is NOT the same as b=pres, a=VP, c=SoS and also not the same as c=pres, a=vp, b = SoS (just ask Hillary if SoS is the same as Pres). Therefore each group (abc, bac, cab) represents a separate choice and must be counted as 3 of the options (not 1 option as above). So permutations will have more options than combinations.

Some words that point out permutations include: arranged, arrangements, ordered, respectively, and any sort of directional instructions like "left to right."

Hope that helps.

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