Find all School-related info fast with the new School-Specific MBA Forum

It is currently 23 Jul 2014, 04:08

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

The positive integer n is divisible by 25. If n^1/2 is

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Joined: 02 Dec 2012
Posts: 178
Followers: 2

Kudos [?]: 174 [0], given: 0

The positive integer n is divisible by 25. If n^1/2 is [#permalink] New post 20 Dec 2012, 05:52
4
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

82% (01:53) correct 18% (01:24) wrong based on 266 sessions
The positive integer n is divisible by 25. If \sqrt{n} is greater than 25, which of the following could be the value of n/25 ?

(A) 22
(B) 23
(C) 24
(D) 25
(E) 26
[Reveal] Spoiler: OA
Expert Post
3 KUDOS received
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 18693
Followers: 3233

Kudos [?]: 22243 [3] , given: 2602

Re: The positive integer n is divisible by 25. If n^1/2 is [#permalink] New post 20 Dec 2012, 05:55
3
This post received
KUDOS
Expert's post
1
This post was
BOOKMARKED
Walkabout wrote:
The positive integer n is divisible by 25. If \sqrt{n} is greater than 25, which of the following could be the value of n/25 ?

(A) 22
(B) 23
(C) 24
(D) 25
(E) 26


\sqrt{n}>25 --> n>25^2.

Divide both parts by 25: \frac{n}{25}>\frac{25^2}{25} --> \frac{n}{25}>25. The only answer choice that is greater than 25 is 26.

Answer: E.

_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS ; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
25 extra-hard Quant Tests

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Intern
Intern
avatar
Joined: 03 Jan 2013
Posts: 4
Followers: 0

Kudos [?]: 0 [0], given: 2

Re: The positive integer n is divisible by 25. If n^1/2 is [#permalink] New post 14 Jan 2013, 10:09
Bunuel wrote:
Walkabout wrote:
The positive integer n is divisible by 25. If \sqrt{n} is greater than 25, which of the following could be the value of n/25 ?

(A) 22
(B) 23
(C) 24
(D) 25
(E) 26


\sqrt{n}>25 --> n>25^2.

Divide both parts by 25: \frac{n}{25}>\frac{25^2}{25} --> \frac{n}{25}>25. The only answer choice that is greater than 25 is 26.

Answer: E.


Hello,

Maybe I don't understand something here, but how can 26/25 be more than 25?
26/25 is 1.04.
Can you please explain.
1 KUDOS received
Manager
Manager
avatar
Joined: 04 Jan 2013
Posts: 82
Followers: 0

Kudos [?]: 4 [1] , given: 1

Re: The positive integer n is divisible by 25. If n^1/2 is [#permalink] New post 14 Jan 2013, 11:25
1
This post received
KUDOS
Walkabout wrote:
The positive integer n is divisible by 25. If \sqrt{n} is greater than 25, which of the following could be the value of n/25 ?

(A) 22
(B) 23
(C) 24
(D) 25
(E) 26


since [square_root]n[square_root] is greater than 25 then our n is also greater than 25..i will try using the try and error method..lets say the value of n/25 =22,then n=550..[sqaure_root]550[sqaure_root] is less than and i guess it wont it wont work..going through all options integer 26 proved worth for an answer by satisfying the following points;it was a result of a division between positive integer n and 25 i.e integer n (650)is a multiple of 25 whose sqaure root is greater than 25..hence option E serves as the answer.

Posted from my mobile device Image
1 KUDOS received
Intern
Intern
avatar
Joined: 22 Dec 2012
Posts: 16
GMAT 1: 720 Q49 V39
Followers: 1

Kudos [?]: 9 [1] , given: 19

Re: The positive integer n is divisible by 25. If n^1/2 is [#permalink] New post 08 Mar 2013, 11:58
1
This post received
KUDOS
the questions says n = 5*5*k (as its divisible by 25)
and then asks to find out possible value of K.

now it also says (n^0.5) > 25
which means 5* (k^0.5) > 25
squaring both sides we get K > 25.

Only possible ans is 26!


Hello,

Maybe I don't understand something here, but how can 26/25 be more than 25?
26/25 is 1.04.
Can you please explain.[/quote]
Intern
Intern
User avatar
Status: Attending Duke in May!
Joined: 07 Jan 2013
Posts: 32
Location: United States (NC)
Concentration: Leadership, Strategy
GMAT 1: 640 Q42 V35
Followers: 0

Kudos [?]: 20 [0], given: 18

Re: The positive integer n is divisible by 25. If n^1/2 is [#permalink] New post 27 Mar 2013, 20:38
Ayselka wrote:
Bunuel wrote:
Walkabout wrote:
The positive integer n is divisible by 25. If \sqrt{n} is greater than 25, which of the following could be the value of n/25 ?

(A) 22
(B) 23
(C) 24
(D) 25
(E) 26


\sqrt{n}>25 --> n>25^2.

Divide both parts by 25: \frac{n}{25}>\frac{25^2}{25} --> \frac{n}{25}>25. The only answer choice that is greater than 25 is 26.

Answer: E.


Hello,

Maybe I don't understand something here, but how can 26/25 be more than 25?
26/25 is 1.04.
Can you please explain.


Ayselka,

I know it looks confusing but the question was what is a possible value for \frac{n}{25} not "what is a possible value for n." Thus, \frac{n}{25}=26, n=650 in this scenario. I hope that helps, and good luck!
Manager
Manager
avatar
Joined: 25 Jul 2012
Posts: 80
Location: United States
Followers: 0

Kudos [?]: 13 [0], given: 137

Re: The positive integer n is divisible by 25. If n^1/2 is [#permalink] New post 22 Jun 2013, 11:59
Bunuel wrote:
Walkabout wrote:
The positive integer n is divisible by 25. If \sqrt{n} is greater than 25, which of the following could be the value of n/25 ?

(A) 22
(B) 23
(C) 24
(D) 25
(E) 26


\sqrt{n}>25 --> n>25^2.

Divide both parts by 25: \frac{n}{25}>\frac{25^2}{25} --> \frac{n}{25}>25. The only answer choice that is greater than 25 is 26.

Answer: E.


Hello,

I am confused on how to comprehend this question. I understand we are not looking for the value of n and that we are looking for the value of n/25, however, how are you dividing both sides of the inequality: n>25^2 by 25?

_________________

If my post has contributed to your learning or teaching in any way, feel free to hit the kudos button ^_^

Expert Post
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 18693
Followers: 3233

Kudos [?]: 22243 [0], given: 2602

Re: The positive integer n is divisible by 25. If n^1/2 is [#permalink] New post 22 Jun 2013, 12:03
Expert's post
DelSingh wrote:
Bunuel wrote:
Walkabout wrote:
The positive integer n is divisible by 25. If \sqrt{n} is greater than 25, which of the following could be the value of n/25 ?

(A) 22
(B) 23
(C) 24
(D) 25
(E) 26


\sqrt{n}>25 --> n>25^2.

Divide both parts by 25: \frac{n}{25}>\frac{25^2}{25} --> \frac{n}{25}>25. The only answer choice that is greater than 25 is 26.

Answer: E.


Hello,

I am confused on how to comprehend this question. I understand we are not looking for the value of n and that we are looking for the value of n/25, however, how are you dividing both sides of the inequality: n>25^2 by 25?


What do you mean by "how"? Just divide both sides of n>25^2 by 25.

_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS ; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
25 extra-hard Quant Tests

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Manager
Manager
avatar
Joined: 25 Jul 2012
Posts: 80
Location: United States
Followers: 0

Kudos [?]: 13 [0], given: 137

Re: The positive integer n is divisible by 25. If n^1/2 is [#permalink] New post 24 Jun 2013, 09:05
Apologies... I meant "why" not "how". However, I do know now what they are asking. I guess the way OG presents the question didn't seem very linear to me so I was confused.

_________________

If my post has contributed to your learning or teaching in any way, feel free to hit the kudos button ^_^

SVP
SVP
User avatar
Joined: 09 Sep 2013
Posts: 1710
Followers: 162

Kudos [?]: 33 [0], given: 0

Premium Member
Re: The positive integer n is divisible by 25. If n^1/2 is [#permalink] New post 01 Jul 2014, 07:52
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.

_________________

GMAT Books | GMAT Club Tests | Best Prices on GMAT Courses | GMAT Mobile App | Math Resources | Verbal Resources

Director
Director
User avatar
Status: The Best Or Nothing
Joined: 27 Dec 2012
Posts: 641
Location: India
Concentration: General Management, Technology
WE: Information Technology (Computer Software)
Followers: 2

Kudos [?]: 144 [0], given: 161

Re: The positive integer n is divisible by 25. If n^1/2 is [#permalink] New post 02 Jul 2014, 01:34
n should be divisible by 25 & \sqrt{n} > 25

So, n^2 > 625

Looking at all the options, only 26 fits in

Answer = E

_________________

Kindly press "Kudos" to appreciate

Re: The positive integer n is divisible by 25. If n^1/2 is   [#permalink] 02 Jul 2014, 01:34
    Similar topics Author Replies Last post
Similar
Topics:
Is positive integer N divisible by 3? silver870 3 05 Apr 2010, 08:26
if n is a positive integer and n^2 is divisible by 72, then joemama142000 1 15 Dec 2005, 06:24
If n is a positive integer and n^2 is divisible by 72, then lhotseface 1 12 Dec 2005, 22:51
If n is a positive integer and n^2 is divisible by 72, then nakib77 11 17 Nov 2005, 13:12
If n is a positive integer and n^2 is divisible by 72, then DAVE 3 07 Oct 2005, 02:51
Display posts from previous: Sort by

The positive integer n is divisible by 25. If n^1/2 is

  Question banks Downloads My Bookmarks Reviews Important topics  


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

Powered by phpBB © phpBB Group and phpBB SEO

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®.