Live GMAT classes with Target Test Prep start Nov 21 and Nov 22. First class free.

See classes
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.

Newsweek Readers’ Choice Awards 2026 winner: Target Test Prep, #1 Test Prep

Target Test Prep was voted #1 Best Test Prep in the 2026 Newsweek Readers’ Choice™ Awards.

★★★★★5.0563 reviews
GMATLiveTeachStarts Nov 22
Josh Braslow, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Josh Braslow, 20+ years in test prep

Nov 22 · Josh Braslow
Sun · 9:30 AM to 12:30 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
EALiveTeachOnDemandStart anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

EXECUTIVE ASSESSMENT

with

165+ EA score guarantee
$05-day trial no automatic billing
Schedule
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
GMATOnDemandStart 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 563 reviewsTarget Test Prep

Exponent problem.

Expert replies
Post new topic Post Reply
Subscribe topic
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 69
Joined: Mon Sep 15, 2008 7:01 pm
Thanked: 2 times
by ManSab » Sun May 17, 2009 12:37 pm
value of 10^8-10^2 / 10^7 - 10 ^3 = ?
1
10
10^2
10^3
10^4

Please answer with explanation.

OA : B
Top
Join the discussion
Source: — Problem Solving |
Master | Next Rank: 500 Posts
Posts: 134
Joined: Sun Feb 15, 2009 7:44 pm
Thanked: 14 times

by m&m » Sun May 17, 2009 1:03 pm
10^8-10^2
------------------
10^7 - 10 ^3


10^2(10^6-1)
------------------
10^3( 10^4 - 1)

10^6-1
------------------
10* 10^4 - 10*1

10^6-1
------------------
10^5 - 10

~ 10^6
------------------
10^5

~10
Top
Join the discussion
Legendary Member
Posts: 940
Joined: Tue Aug 26, 2008 3:22 amFollowed by: 1 member
Thanked: 55 times

Re: Exponent problem.

by iamcste » Sun May 17, 2009 1:20 pm
ManSab wrote:value of 10^8-10^2 / 10^7 - 10 ^3 = ?
1
10
10^2
10^3
10^4

Please answer with explanation.

OA : B

Key is to realize that it hardly matters when you remove 100 or 1000 from a number as high as 10^8 or 10^7

I would just consider problem as (10^8/10^7)=10

I think trick is many would just try to find rule of exponents would simplify the problem!

B
Top
Join the discussion
Senior | Next Rank: 100 Posts
Posts: 69
Joined: Mon Sep 15, 2008 7:01 pm
Thanked: 2 times

by ManSab » Sun May 17, 2009 1:30 pm
Thanks m&m and iamcste.

iamcste - You are absolutely right,, I was trying to solve it using exponent rules and got caught on the wrong foot. :(
Top
Join the discussion
Master | Next Rank: 500 Posts
Posts: 111
Joined: Sat Sep 27, 2008 12:41 pm
Thanked: 1 times

by tdadic84 » Mon May 18, 2009 6:50 am
the way i did it...

10^8 - 10^2/10^7-10^3 = 10 - 10^-1 = 10 - 1/10 = approx 10....

and i think the original question says what is the approximate value...
Top
Join the discussion