Find all School-related info fast with the new School-Specific MBA Forum

It is currently 02 Aug 2015, 02:20
GMAT Club Tests

Close

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
Your Progress

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

GMAC: Exponents

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Manager
Manager
User avatar
Joined: 21 Sep 2006
Posts: 112
Location: Where you mind is
Followers: 1

Kudos [?]: 5 [0], given: 0

GMAC: Exponents [#permalink] New post 21 Sep 2007, 20:03
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Can anyone help to walk me through this coz i don't have the answers for this one though :( Thanks.

((1/5)^m)((1/4)^18)= ((1/2(10)^35)). What is the value of m?
Director
Director
avatar
Joined: 11 Jun 2007
Posts: 932
Followers: 1

Kudos [?]: 83 [0], given: 0

Re: GMAC: Exponents [#permalink] New post 21 Sep 2007, 20:33
Hang Tuah wrote:
Can anyone help to walk me through this coz i don't have the answers for this one though :( Thanks.

((1/5)^m)((1/4)^18)= ((1/2(10)^35)). What is the value of m?


question.. for the rhs.. is that [1/2]* [10^35] or (1/20)^35
Manager
Manager
avatar
Joined: 17 Aug 2007
Posts: 77
Followers: 1

Kudos [?]: 4 [0], given: 0

Re: GMAC: Exponents [#permalink] New post 21 Sep 2007, 20:50
Hang Tuah wrote:
Can anyone help to walk me through this coz i don't have the answers for this one though :( Thanks.

((1/5)^m)((1/4)^18)= ((1/2(10)^35)). What is the value of m?


( 1/5) ^m * 1/2 ^ 36 = 1/2 * 10^35

= (1/5) ^m * (1/2)^35 = 10 ^ 35 (cancelling 1/2 both sides)

(1/5) ^ m = (10/2)^35 ( applying x ^m * y ^ -m = (x/y) ^ m)

or 5 ^ -m = 5 ^35

or m = -35
Director
Director
avatar
Joined: 11 Jun 2007
Posts: 932
Followers: 1

Kudos [?]: 83 [0], given: 0

Re: GMAC: Exponents [#permalink] New post 21 Sep 2007, 21:08
carpeD wrote:
Hang Tuah wrote:
Can anyone help to walk me through this coz i don't have the answers for this one though :( Thanks.

((1/5)^m)((1/4)^18)= ((1/2(10)^35)). What is the value of m?


( 1/5) ^m * 1/2 ^ 36 = 1/2 * 10^35

= (1/5) ^m * (1/2)^35 = 10 ^ 35 (cancelling 1/2 both sides)

(1/5) ^ m = (10/2)^35 ( applying x ^m * y ^ -m = (x/y) ^ m)

or 5 ^ -m = 5 ^35

or m = -35


correct me if i'm wrong as i had a similar logic but isn't the part in red supposed to be (1/5)^m = (10/ [1/2])^35 = 1/5^m = 20^35 since we are "canceling" the term
Manager
Manager
avatar
Joined: 17 Aug 2007
Posts: 77
Followers: 1

Kudos [?]: 4 [0], given: 0

Re: GMAC: Exponents [#permalink] New post 21 Sep 2007, 21:28
beckee529 wrote:
carpeD wrote:
Hang Tuah wrote:
Can anyone help to walk me through this coz i don't have the answers for this one though :( Thanks.

((1/5)^m)((1/4)^18)= ((1/2(10)^35)). What is the value of m?


( 1/5) ^m * 1/2 ^ 36 = 1/2 * 10^35

= (1/5) ^m * (1/2)^35 = 10 ^ 35 (cancelling 1/2 both sides)

(1/5) ^ m = (10/2)^35 ( applying x ^m * y ^ -m = (x/y) ^ m)

or 5 ^ -m = 5 ^35

or m = -35


correct me if i'm wrong as i had a similar logic but isn't the part in red supposed to be (1/5)^m = (10/ [1/2])^35 = 1/5^m = 20^35 since we are "canceling" the term


yeah your right !!! i just made it convenient for myself .. I am kind of stuck now ...
CEO
CEO
User avatar
Joined: 29 Mar 2007
Posts: 2585
Followers: 17

Kudos [?]: 248 [0], given: 0

Re: GMAC: Exponents [#permalink] New post 22 Sep 2007, 00:20
Hang Tuah wrote:
Can anyone help to walk me through this coz i don't have the answers for this one though :( Thanks.

((1/5)^m)((1/4)^18)= ((1/2(10)^35)). What is the value of m?


had this one on my gmat prep.


(1/5^m * (1/2^2)^18 = 1/2(2^35*5^35)

(1/5^m * (1/2)^36 = 1/2^36*5^35. Multiply both sides by 2^36.


your left w/ 1/5^m=1/5^35

m=35.
Re: GMAC: Exponents   [#permalink] 22 Sep 2007, 00:20
Display posts from previous: Sort by

GMAC: Exponents

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.