It is currently 19 Oct 2017, 17:21

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

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

m06 Q20

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
SVP
SVP
avatar
Joined: 16 Nov 2010
Posts: 1597

Kudos [?]: 592 [0], given: 36

Location: United States (IN)
Concentration: Strategy, Technology
Premium Member Reviews Badge
m06 Q20 [#permalink]

Show Tags

New post 12 Apr 2011, 02:56
Hi

For this question, I calculated as follows :

5^(root(2)) * 5^(root(2))

= 5^(2root(2))

= 25(root(2))

Is the above approach correct ? Also, where can I learn more about such tricky exponent stuff ?

Regards,
Subhash
Attachments

m06Q20.png
m06Q20.png [ 12.19 KiB | Viewed 1038 times ]


_________________

Formula of Life -> Achievement/Potential = k * Happiness (where k is a constant)

GMAT Club Premium Membership - big benefits and savings

Kudos [?]: 592 [0], given: 36

1 KUDOS received
Math Forum Moderator
avatar
Joined: 20 Dec 2010
Posts: 1964

Kudos [?]: 2051 [1], given: 376

Re: m06 Q20 [#permalink]

Show Tags

New post 12 Apr 2011, 03:09
1
This post received
KUDOS
subhashghosh wrote:
Hi

For this question, I calculated as follows :

5^(root(2)) * 5^(root(2))

= 5^(2root(2))

= 25(root(2))

Is the above approach correct ? Also, where can I learn more about such tricky exponent stuff ?

Regards,
Subhash


Yes, the approach is correct.

\((5^{\sqrt{2}})^2=(5^{2})^{\sqrt{2}}=25^{\sqrt{2}}\) [Note: \((x^m)^n=x^{mn}=(x^n)^m\)]

I think GMAT Club Math book exponents in number theory did a decent job.
_________________

~fluke

GMAT Club Premium Membership - big benefits and savings

Kudos [?]: 2051 [1], given: 376

Senior Manager
Senior Manager
User avatar
Joined: 08 Nov 2010
Posts: 394

Kudos [?]: 128 [0], given: 161

WE 1: Business Development
GMAT ToolKit User
Re: m06 Q20 [#permalink]

Show Tags

New post 13 Apr 2011, 10:48
yea, i would be happy to find that kind of practice if someone have it.

thanks.
_________________

GMAT Club Premium Membership - big benefits and savings

Kudos [?]: 128 [0], given: 161

Director
Director
avatar
Joined: 01 Feb 2011
Posts: 726

Kudos [?]: 143 [0], given: 42

Re: m06 Q20 [#permalink]

Show Tags

New post 15 Apr 2011, 15:47
Looks alright to me.

I got 25^(sqrt(2)) too.

Posted from my mobile device

Kudos [?]: 143 [0], given: 42

Re: m06 Q20   [#permalink] 15 Apr 2011, 15:47
Display posts from previous: Sort by

m06 Q20

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

Moderator: Bunuel



GMAT Club MBA Forum Home| About| Terms and Conditions| 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®.