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

It is currently 20 Feb 2019, 12:20

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 in February
PrevNext
SuMoTuWeThFrSa
272829303112
3456789
10111213141516
17181920212223
242526272812
Open Detailed Calendar
  • Free GMAT Prep Hour

     February 20, 2019

     February 20, 2019

     08:00 PM EST

     09:00 PM EST

    Strategies and techniques for approaching featured GMAT topics. Wednesday, February 20th at 8 PM EST
  • Online GMAT boot camp for FREE

     February 21, 2019

     February 21, 2019

     10:00 PM PST

     11:00 PM PST

    Kick off your 2019 GMAT prep with a free 7-day boot camp that includes free online lessons, webinars, and a full GMAT course access. Limited for the first 99 registrants! Feb. 21st until the 27th.

350^2 - 320^2 =

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

 
Manager
Manager
avatar
B
Joined: 20 Jul 2018
Posts: 75
WE: Corporate Finance (Investment Banking)
350^2 - 320^2 =  [#permalink]

Show Tags

New post 21 Oct 2018, 09:00
2
3
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

81% (01:07) correct 19% (01:37) wrong based on 68 sessions

HideShow timer Statistics

\(350^2 - 320^2 =\)

A) 900

B) 8100

C) 21100

D) 21000

E) 20100
CEO
CEO
User avatar
D
Joined: 11 Sep 2015
Posts: 3440
Location: Canada
Re: 350^2 - 320^2 =  [#permalink]

Show Tags

New post 21 Oct 2018, 09:12
Top Contributor
Kaczet wrote:
\(350^2 - 320^2 =\)

A) 900

B) 8100

C) 21100

D) 21000

E) 20100


Looks like a job for difference of squares factoring!
That is: x² - y² = (x + y)(x - y)

Likewise, 350² - 320² = (350 + 320)(350 - 320)
= (670)(30)
= 20,100

Answer: E

RELATED VIDEO FROM OUR COURSE

_________________

Test confidently with gmatprepnow.com
Image

Intern
Intern
avatar
Joined: 28 Mar 2018
Posts: 5
Re: 350^2 - 320^2 =  [#permalink]

Show Tags

New post 22 Oct 2018, 21:43
Kaczet wrote:
\(350^2 - 320^2 =\)

A) 900

B) 8100

C) 21100

D) 21000

E) 20100


350^2 - 320^2 = 100(35^2 - 32^2) = 100 x 67 x 3 = 100 x 201 (option E)
GMAT Club Bot
Re: 350^2 - 320^2 =   [#permalink] 22 Oct 2018, 21:43
Display posts from previous: Sort by

350^2 - 320^2 =

  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®.