Exponents and Roots : PS Archive
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 21 Jan 2017, 10:33

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Exponents and Roots

Author Message
Intern
Joined: 15 Oct 2009
Posts: 16
Followers: 0

Kudos [?]: 0 [0], given: 2

### Show Tags

03 Nov 2009, 14:59
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

### HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

I havent found anywhere in my MGMAT books that addresses this. Or I have but cant remember where. How does the denominator of this problem
10^5 /(.001)^2

get converted to
((10^ -3)^2) --> (10^-6)

What are the rules behind this?

Thanks
VP
Joined: 05 Mar 2008
Posts: 1473
Followers: 11

Kudos [?]: 261 [0], given: 31

### Show Tags

03 Nov 2009, 15:33
The answer to the problem is 10^11 so I'm not sure why the denominator would be 10^-6. Of course, I'm not a math whiz. Could you post the answer choices?
Math Expert
Joined: 02 Sep 2009
Posts: 36590
Followers: 7091

Kudos [?]: 93344 [2] , given: 10557

### Show Tags

03 Nov 2009, 15:38
2
KUDOS
Expert's post
sac8513 wrote:
I havent found anywhere in my MGMAT books that addresses this. Or I have but cant remember where. How does the denominator of this problem
10^5 /(.001)^2

get converted to
(10^{-3})^2 --> (10^-6)

What are the rules behind this?

Thanks

Denominator $$0.001=\frac{1}{1000}=\frac{1}{10^3}=10^{-3}$$

(10^-3)^2=10^-6

So $$\frac{10^5}{(0.001)^2}=\frac{10^5}{10^{-6}}=10^5*10^6=10^{11}$$
_________________
VP
Joined: 05 Mar 2008
Posts: 1473
Followers: 11

Kudos [?]: 261 [0], given: 31

### Show Tags

03 Nov 2009, 15:42
Bunuel wrote:
sac8513 wrote:
I havent found anywhere in my MGMAT books that addresses this. Or I have but cant remember where. How does the denominator of this problem
10^5 /(.001)^2

get converted to
(10^{-3})^2 --> (10^-6)

What are the rules behind this?

Thanks

Denominator $$0.001=\frac{1}{1000}=\frac{1}{10^3}=10^{-3}$$

(10^-3)^2=10^-6

So $$\frac{10^5}{(0.001)^2}=\frac{10^5}{10^{-6}}=10^5*10^6=10^{11}$$

excellent..i can get the answer another way...but this helps
Re: Exponents and Roots   [#permalink] 03 Nov 2009, 15:42
Display posts from previous: Sort by