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
GMATBootcamp Starts Sep 28
Chris Peckover, Target Test Prep GMAT expert
LIVE ONLINE BOOTCAMP

Live Online Bootcamp Class with Top GMAT Expert Chris Peckover

15 live classes from Sep 28, 2026

Schedule
Mon to Fri · 7:00 to 10:00 PM ET
Included
Live classes + 6 months of TTP OnDemand
  • Boost your GMAT score in less than one month in a live online class
  • 6 months access to TTP OnDemand video courses included
View bootcamp & 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
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
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.

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.

Finding "N"

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Data Sufficiency |
Master | Next Rank: 500 Posts
Posts: 105
Joined: Mon Sep 18, 2006 12:34 pm
Location: OH
Thanked: 7 times
GMAT Score:780

by mschling52 » Mon Jun 18, 2007 7:52 am
Is it B? From (1) we can gather that

n^2 + 2n -15 = 0
(n+5)(n-3) = 0

n = 3 or -5...not sufficient.

But using (2) if we factorize 125

125 = 5 * 25 = 5*5*5 = 5^3, so n=3.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 103
Joined: Sun Jun 10, 2007 7:10 pm
Location: Brooklyn, NY
Thanked: 2 times

by jrbrown2 » Mon Jun 18, 2007 7:54 am
with statement 1:
n(n+2)=15 This is a quadratic equation so expand it out

n^2 +2n -15 = 0

(n+5)(n-3)=0
n=-5, +3

n has 2 values so statement 1 is not sufficient

with statement 2:

(n+2)^n = 125
n = 3
statement 2 is sufficient but statement 1 is not...B
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 400
Joined: Sat Mar 10, 2007 4:04 amFollowed by: 1 member
Thanked: 1 times

by f2001290 » Mon Jun 18, 2007 8:05 am
Thanks mschling and brown.

Even i thought it to be B. But OA is C. We can conclude that OA is wrong.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Junior | Next Rank: 30 Posts
Posts: 10
Joined: Tue Jun 20, 2006 8:52 am
Location: india

by manred » Tue Jul 10, 2007 7:10 pm
Phantom, I agree that 125 has roots 5, -5 and -5, but for other value of n (other than 3) is (n+2)^n = 125? I think the only possible value of n satisfying that equation is 3. hence I believe the answer to be B. Can you provide an eloborate explantion?
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1