BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem
TTP OnDemand GMAT Video Course
Featured Course

Target Test Prep GMAT OnDemand

Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.

  • 715+ score guarantee — highest in the industry (99th percentile)
  • 52 chapters · 1,500+ lessons · 4,000+ practice questions
  • 400 hours of video · 1,500+ instructor-led HD smartboard lessons
  • 300,000+ students accepted to Harvard, Stanford, Wharton, Booth & Sloan & more
  • 24/7 live support + weekly Zoom office hours with GMAT instructors
  • TTP AI Assist — 24/7 AI-powered virtual tutor for instant help
  • 1,200+ flashcards + AI-powered study assistant & daily calendar
  • OnDemand, LiveTeach & GMAT Bootcamp formats available
  • Also: GRE, SAT Math & Executive Assessment courses
  • MBA Admissions Consulting now available
  • 🏆 2025 EdTech Breakthrough Award: Test Prep Solution Provider of the Year
  • 200,000+ students served
  • 5-day free trial — $0 to start, no auto-billing, cancel anytime
★★★★★ 5.0 (559 reviews)
130-pt guarantee
$0 to start then $127/mo
Start Free 5-Day Trial Read 559 Reviews →

Gmat prep ques 1

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |
Senior | Next Rank: 100 Posts
Posts: 52
Joined: Tue Mar 25, 2008 9:00 pm

Re: Gmat prep ques 1

by kvamsy » Mon Jun 01, 2009 8:02 pm
I have got B as answer as below

10^2(10^6-1) (10^2)^3) - 1
---------------- ------> ---------------- *1/10
10^3(10^4-1) (10^2)^2 - 1

Expanding as A^3-B^3 and A^2 - B^2

Gives us 10101/1010 gives 10 as answer


Hope i am right
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 139
Joined: Wed Oct 22, 2008 4:36 am
Thanked: 17 times

by sacx » Tue Jun 02, 2009 4:40 am
If you are subtracting a very small number from a comparatively bigger number then the resulting number is very near to the bigger number.

So your question would effectively convert into 10^8/10^7 equals to what??

and the answer to that is simple 10

B
SACX
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 52
Joined: Wed May 06, 2009 8:57 am
Thanked: 2 times

by pathaniaus » Tue Jun 02, 2009 6:40 am
hmm i tried solving that on my own... I got 10^2. I do not know where i am making my mistake. Could you please explain in detail?
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 129
Joined: Tue May 19, 2009 9:12 am
Thanked: 8 times

by cata1yst » Tue Jun 02, 2009 7:41 am
pathaniaus wrote:hmm i tried solving that on my own... I got 10^2. I do not know where i am making my mistake. Could you please explain in detail?
Here is what I did. Try this...

(10^8 - 10^2) / (10^7 - 10^3)

Factor out 10^2 on both the top and bottom of the fraction.

[ 10^2 * (10^6 - 1) ] / [ 10^2 * (10^5 - 10) ]

You can now cancel out 10^2 and you are left with...

(10^6 - 1) / (10^5 -10)

Which is basically...

10^6 / 10^5 = 10
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1