Last visit was: 11 Dec 2024, 17:27 It is currently 11 Dec 2024, 17:27
Home
GMAT
Messages
Tests
Schools
Reviews
Social
Chat
My Profile
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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel
Back to Forum
Create Topic
Sub 505 Level|   Exponents|      
User avatar
Sajjad1994
User avatar
GRE Forum Moderator
Joined: 02 Nov 2016
Last visit: 11 Dec 2024
Posts: 14,156
Own Kudos:
41,538
 [2]
Given Kudos: 5,905
GPA: 3.62
Products:
GMAT Club Tests Forum Quiz
Posts: 14,156
Kudos: 41,538
 [2]
(10^(1/2) + 10^(1/2)/2^(1/2))^2 = 29 Aug 2019, 08:08
1
Kudos
Add Kudos
1
Bookmarks
Bookmark this Post
00:00
Start Timer
Pause Timer
Resume Timer
Show Answer
Hide
Show
History
B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

5% (low)

Question Stats:

85% (00:40) correct 15% (00:31) wrong based on 53 sessions

History

Date
Time
Result
Not Attempted Yet
\([\frac{\sqrt{10} + \sqrt{10}}{\sqrt{2}}]^2\)

A. 10
B. 20
C. 50
D. 100
E. 200
ShowHide Answer
Official Answer
B
User avatar
Sajjad1994
User avatar
GRE Forum Moderator
Joined: 02 Nov 2016
Last visit: 11 Dec 2024
Posts: 14,156
Own Kudos:
41,538
Given Kudos: 5,905
GPA: 3.62
Products:
GMAT Club Tests Forum Quiz
Posts: 14,156
Kudos: 41,538
(10^(1/2) + 10^(1/2)/2^(1/2))^2 = 29 Aug 2019, 08:10
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Attachment:
BH.jpg
BH.jpg [ 3.8 KiB | Viewed 1482 times ]

Bunuel PLEASE FIX THE FORMULA.

Thanks
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: 11 Dec 2024
Posts: 97,815
Own Kudos:
685,148
 [1]
Given Kudos: 88,242
Products:
GMAT Club Tests Forum Quiz
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 97,815
Kudos: 685,148
 [1]
(10^(1/2) + 10^(1/2)/2^(1/2))^2 = 29 Aug 2019, 08:16
1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
SajjadAhmad
Attachment:
BH.jpg

Bunuel PLEASE FIX THE FORMULA.

Thanks
___________________
Fixed the formula.
avatar
nipun12
avatar
Joined: 22 Oct 2018
Last visit: 18 Oct 2019
Posts: 1
Posts: 1
Kudos: 0
(10^(1/2) + 10^(1/2)/2^(1/2))^2 = 29 Aug 2019, 08:20
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Is the answer B?

(2√10/√2)^2
4*10/2
40/2
20

Posted from my mobile device
User avatar
EncounterGMAT
User avatar
Joined: 10 Oct 2018
Last visit: 16 Oct 2019
Posts: 321
Own Kudos:
562
 [2]
Given Kudos: 185
Status:Whatever it takes!
GPA: 4
Posts: 321
Kudos: 562
 [2]
(10^(1/2) + 10^(1/2)/2^(1/2))^2 = 29 Aug 2019, 08:23
2
Kudos
Add Kudos
Bookmarks
Bookmark this Post
IMO answer is option B

Posted from my mobile device
Attachments

IMG_20190829_205236.jpg
IMG_20190829_205236.jpg [ 1.33 MiB | Viewed 1426 times ]

User avatar
Abhishek009
User avatar
Board of Directors
Joined: 11 Jun 2011
Last visit: 02 Oct 2024
Posts: 6,014
Own Kudos:
4,947
Given Kudos: 463
Status:QA & VA Forum Moderator
Location: India
GPA: 3.5
WE:Business Development (Commercial Banking)
Posts: 6,014
Kudos: 4,947
(10^(1/2) + 10^(1/2)/2^(1/2))^2 = 29 Aug 2019, 11:22
Kudos
Add Kudos
Bookmarks
Bookmark this Post
SajjadAhmad
\([\frac{\sqrt{10} + \sqrt{10}}{\sqrt{2}}]^2\)

A. 10
B. 20
C. 50
D. 100
E. 200
\([\frac{\sqrt{10} + \sqrt{10}}{\sqrt{2}}]^2\)

= \([\frac{2\sqrt{10}}{\sqrt{2}}]^2\)

= \(\frac{4*10}{2}\)

= \(20\) , Answer must be (B)
User avatar
ScottTargetTestPrep
User avatar
Target Test Prep Representative
Joined: 14 Oct 2015
Last visit: 11 Dec 2024
Posts: 19,854
Own Kudos:
24,260
Given Kudos: 288
Status:Founder & CEO
Affiliations: Target Test Prep
Location: United States (CA)
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 19,854
Kudos: 24,260
(10^(1/2) + 10^(1/2)/2^(1/2))^2 = 02 Sep 2019, 19:39
Kudos
Add Kudos
Bookmarks
Bookmark this Post
SajjadAhmad
\([\frac{\sqrt{10} + \sqrt{10}}{\sqrt{2}}]^2\)

A. 10
B. 20
C. 50
D. 100
E. 200

Simplifying, we have:

[(2√10)/√2]^2 = (2√5)^2 = 4 * 5 = 20

Answer: B
Moderator:
Bunuel
Math Expert
97815 posts