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.

GMAT prep question powers

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 198
Joined: Tue Feb 12, 2008 10:16 am
Location: San Francisco
Thanked: 14 times
by mbadrew » Tue Aug 04, 2009 9:41 am
2^5 + 2^5 + 3^5 + 3^5 + 3^5

a. 5^6
b. 13^5
c. 2^7 + 3^8
d. 4^5 + 9^5
e. 2^6 + 3^6

I know this question has to be solved by factoring, but not sure how to approach.

OA after a few explanations.

thanks
Andrew
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
User avatar
Legendary Member
Posts: 519
Joined: Sat Jan 27, 2007 7:56 am
Location: India
Thanked: 31 times

by Neo2000 » Tue Aug 04, 2009 10:23 am
This is of the form a+a + b+b+b = 2a + 3b

So now you have 2.2^5 + 3.3^5

But you know that 2.2 = 2^2 and 2.2^2 =2^3 i.e. a^m x a^n = a^(m+n)

So you get 2^6 + 3^6
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 59
Joined: Mon Jul 13, 2009 8:58 pm
Thanked: 10 times
GMAT Score:710

Re: GMAT prep question powers

by ankitns » Tue Aug 04, 2009 10:24 am
Answer is E.

2^5 + 2^5 + 3^5 + 3^5 + 3^5
= (2^5 + 2^5) + (3^5 + 3^5 + 3^5)
= 2^5(1 + 1) + 3^5(1 + 1 + 1)

= 2^5(2) + 3^5(3)
=2^6 + 3^6


Hope it helps.
mbadrew wrote:2^5 + 2^5 + 3^5 + 3^5 + 3^5

a. 5^6
b. 13^5
c. 2^7 + 3^8
d. 4^5 + 9^5
e. 2^6 + 3^6

I know this question has to be solved by factoring, but not sure how to approach.

OA after a few explanations.

thanks
Andrew
Attempt 1: 710, 92% (Q 42, 63%; V 44, 97%)
Attempt 2: Coming soon!
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 198
Joined: Tue Feb 12, 2008 10:16 am
Location: San Francisco
Thanked: 14 times

by mbadrew » Tue Aug 04, 2009 12:49 pm
Yes, OA is e.

Many thanks to both of you for explaining. I did get to the last part but wasn't sure about the answer.

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