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

It is currently 23 Jun 2018, 00:57

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

If the sum of a and b is 6 and the product of a and b is 7, what is

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

Hide Tags

Expert Post
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 46291
If the sum of a and b is 6 and the product of a and b is 7, what is [#permalink]

Show Tags

New post 19 Sep 2017, 01:51
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

88% (00:36) correct 12% (02:35) wrong based on 43 sessions

HideShow timer Statistics

2 KUDOS received
Manager
Manager
User avatar
G
Joined: 27 Dec 2016
Posts: 231
Concentration: Marketing, Social Entrepreneurship
GPA: 3.65
WE: Marketing (Education)
Premium Member Reviews Badge
Re: If the sum of a and b is 6 and the product of a and b is 7, what is [#permalink]

Show Tags

New post 19 Sep 2017, 02:07
2
1
Bunuel wrote:
If the sum of a and b is 6 and the product of a and b is 7, what is the value of a2 + b2?

A. 22
B. 24
C. 29
D. 36
E. 42


Question, what is the value of \(a^2 + b^2\)?

We can combine all of the information we have :
- \((a+b)^2\) = \(a^2+2ab+b^2\)
- \((6)^2 = a^2+b^2+2(7)\)
- \(36-14=a^2+b^2\)
- So, \(a^2+b^2=22\).

A.
_________________

There's an app for that - Steve Jobs.

Director
Director
User avatar
P
Joined: 13 Mar 2017
Posts: 610
Location: India
Concentration: General Management, Entrepreneurship
GPA: 3.8
WE: Engineering (Energy and Utilities)
Re: If the sum of a and b is 6 and the product of a and b is 7, what is [#permalink]

Show Tags

New post 19 Sep 2017, 02:13
Bunuel wrote:
If the sum of a and b is 6 and the product of a and b is 7, what is the value of a2 + b2?

A. 22
B. 24
C. 29
D. 36
E. 42



a+b = 6
ab = 7
a^2 + b^2 = (a+b)^2 - 2ab = (6)^2 - 2*7 = 36 - 14 = 22

Answer A
_________________

CAT 99th percentiler : VA 97.27 | DI-LR 96.84 | QA 98.04 | OA 98.95
UPSC Aspirants : Get my app UPSC Important News Reader from Play store.

MBA Social Network : WebMaggu


Appreciate by Clicking +1 Kudos ( Lets be more generous friends.)



What I believe is : "Nothing is Impossible, Even Impossible says I'm Possible" : "Stay Hungry, Stay Foolish".

Re: If the sum of a and b is 6 and the product of a and b is 7, what is   [#permalink] 19 Sep 2017, 02:13
Display posts from previous: Sort by

If the sum of a and b is 6 and the product of a and b is 7, what is

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


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®.