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.

Permutations

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Newbie | Next Rank: 10 Posts
Posts: 6
Joined: Mon Aug 02, 2010 3:51 am
by ruthm_24 » Sat Oct 02, 2010 10:24 am
All of the stocks on the over-the-counter market are designated by either a 4-letter or a 5-letter code that is created by using the 26 letters of the alphabet. Which of the following gives the maximum number of different stocks that can be designated with these codes?
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
User avatar
Senior | Next Rank: 100 Posts
Posts: 81
Joined: Sat Aug 08, 2009 1:16 pm
Thanked: 2 times

by Arcane66 » Sat Oct 02, 2010 10:58 am
Hmm, is the answer 8,252,400? I got this by using the permutation formula twice. 26!/(26-4)! + 26!/(26-5)!. I
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Newbie | Next Rank: 10 Posts
Posts: 6
Joined: Mon Aug 02, 2010 3:51 am

by ruthm_24 » Sat Oct 02, 2010 11:09 am
Sorry, forgot to post that the answer is [spoiler]27(26^4)[/spoiler].
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 174
Joined: Fri Apr 02, 2010 3:41 pmFollowed by: 1 member
Thanked: 6 times

by sanabk » Mon Oct 04, 2010 3:49 pm
4-letter code
=26 x 26 x 26 x 26
=(26)^4

5-letter code
=26 x 26 x 26 x 26 x 26
=(26)^5

Total=(26)^4 + (26)^5
= (26)^4 + 26 x (26)^4
=(26)^4 [1+26]
=27 x (26)^4
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 156
Joined: Sat Sep 04, 2010 2:27 am
Location: Leeds,UK
Thanked: 1 times

by lokesh r » Tue Oct 05, 2010 7:15 am
sanabk wrote:4-letter code
=26 x 26 x 26 x 26
=(26)^4

5-letter code
=26 x 26 x 26 x 26 x 26
=(26)^5

Total=(26)^4 + (26)^5
= (26)^4 + 26 x (26)^4
=(26)^4 [1+26]
=27 x (26)^4
Hey i think u are assuming repitition allowed, but question does not explicitly mention that repitition is allowed.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Legendary Member
Posts: 1255
Joined: Fri Nov 07, 2008 2:08 pmFollowed by: 90 members
Location: St. Louis
Thanked: 312 times

by Tani » Tue Oct 05, 2010 10:58 am
UNless the questions tells you that you cannot repeat a letter, then repetition is possible. You can't assume an unstated restriction.
Tani Wolff
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1