GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 24 May 2019, 14:22

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.

Close

Request Expert Reply

Confirm Cancel

(1/5)^−2∗(1/25)^−4∗(1/125)^−6 =

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Senior Manager
Senior Manager
avatar
P
Joined: 18 Feb 2019
Posts: 380
Location: India
GMAT 1: 460 Q42 V13
GPA: 3.6
(1/5)^−2∗(1/25)^−4∗(1/125)^−6 =  [#permalink]

Show Tags

New post Updated on: 11 Apr 2019, 04:18
00:00
A
B
C
D
E

Difficulty:

  65% (hard)

Question Stats:

57% (01:45) correct 43% (01:17) wrong based on 21 sessions

HideShow timer Statistics

\((\frac{1}{5})^{−2}∗(\frac{1}{25})^{−4}∗(\frac{1}{125})^{−6} =\)


A. 125^-7
B. 625^-7
C. 125^7
D. 625^7
E. 625^14

Originally posted by kiran120680 on 10 Apr 2019, 12:34.
Last edited by chetan2u on 11 Apr 2019, 04:18, edited 2 times in total.
Corrected the OA
Math Expert
User avatar
V
Joined: 02 Aug 2009
Posts: 7686
Re: (1/5)^−2∗(1/25)^−4∗(1/125)^−6 =  [#permalink]

Show Tags

New post 11 Apr 2019, 04:15
kiran120680 wrote:
\((\frac{1}{5})^{−2}∗(\frac{1}{25})^{−4}∗(\frac{1}{125})^{−6} =\)


A. 125^-7
B. 625^-7
C. 125^7
D. 625^7
E. 625^14



OA is wrong... answer should be D and NOT E..That is why timer is also showing 100% wrong

\((\frac{1}{5})^{−2}∗(\frac{1}{25})^{−4}∗(\frac{1}{125})^{−6}\) = \(5^2*25^4*125^6=5^2*(5^2)^4*(5^3)^6=5^{2+2*4+3*6)=5^28=(5^4)^{\frac{28}{4}}=625^7\)
D
_________________
GMAT Club Bot
Re: (1/5)^−2∗(1/25)^−4∗(1/125)^−6 =   [#permalink] 11 Apr 2019, 04:15
Display posts from previous: Sort by

(1/5)^−2∗(1/25)^−4∗(1/125)^−6 =

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


Copyright

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

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

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®.