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

Redeem

10

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 345
Joined: Wed Mar 18, 2009 6:53 pm
Location: Sao Paulo-Brazil
Thanked: 12 times
GMAT Score:660

10

by shibal » Thu Jun 25, 2009 6:45 pm
10^8 – 10^2 / 10^7 – 10^3 =?

oa 10
Top
Source: — Problem Solving |
User avatar
Master | Next Rank: 500 Posts
Posts: 472
Joined: Sun Mar 29, 2009 6:54 pm
Thanked: 56 times

Re: 10

by ssmiles08 » Thu Jun 25, 2009 6:56 pm
shibal wrote:10^8 – 10^2 / 10^7 – 10^3 =?

oa 10
10^8 – 10^2 = 10^2*(10^6-1)

10^7 – 10^3 = 10^3*(10^4-1)

notice that (10^6-1) and (10^4-1) is 10^6 and 10^4 b/c subtracting 1 is trivial.

dividing will give you 10^2/10 = 10.
Top
Post new topic Post Reply
• Page 1 of 1