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

It is currently 18 Apr 2014, 18:00

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

If y is the smallest positive integer such that 3,150 multip

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Senior Manager
Senior Manager
Joined: 30 Aug 2003
Posts: 326
Location: dallas , tx
Followers: 1

Kudos [?]: 3 [0], given: 0

GMAT Tests User
If y is the smallest positive integer such that 3,150 multip [#permalink] New post 18 Feb 2004, 22:48
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

65% (02:41) correct 34% (01:39) wrong based on 35 sessions
If y is the smallest positive integer such that 3,150 multiplied by y is the square of an integer, then y must be

A. 2
B. 5
C. 6
D. 7
E. 14

OPEN DISCUSSION OF THIS QUESTION IS HERE: if-y-is-the-smallest-positive-integer-such-that-65323.html
[Reveal] Spoiler: OA

_________________

shubhangi


Last edited by Bunuel on 23 Feb 2014, 16:31, edited 1 time in total.
Renamed the topic, edited the question and added the OA.
Kaplan Promo CodeKnewton GMAT Discount CodesVeritas Prep GMAT Discount Codes
Intern
Intern
User avatar
Joined: 25 Jan 2004
Posts: 28
Location: Redwood City, USA
Followers: 0

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

 [#permalink] New post 18 Feb 2004, 23:00
I go with E.

B and C are out because they are odd.
A and D do not work. Just do the multiplication and you can see that there is not square.
1 KUDOS received
Manager
Manager
User avatar
Joined: 26 Dec 2003
Posts: 227
Location: India
Followers: 1

Kudos [?]: 1 [1] , given: 0

GMAT Tests User
 [#permalink] New post 19 Feb 2004, 04:57
1
This post received
KUDOS
E. 3150= 5*5*3*3*7*2, so we need one 7 and one 2 to make it a square of a number. so 7*2= 14
VP
VP
User avatar
Joined: 09 Sep 2013
Posts: 1093
Followers: 121

Kudos [?]: 29 [0], given: 0

Premium Member
Re: If y is the smallest Positive integer such that 3150 [#permalink] New post 23 Feb 2014, 15:59
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

Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 17317
Followers: 2874

Kudos [?]: 18380 [0], given: 2348

GMAT Tests User CAT Tests
Re: If y is the smallest positive integer such that 3,150 multip [#permalink] New post 23 Feb 2014, 16:32
Expert's post
If y is the smallest positive integer such that 3,150 multiplied by y is the square of an integer, then y must be
A. 2
B. 5
C. 6
D. 7
E. 14

3,150=2*3^2*5^2*7, now 3,150*y to be a perfect square y must complete the odd powers of 2 and 7 to even number (perfect square has even powers of its primes), so the least value of y is 2*7=14. In this case 3,150y=(2*3^2*5^2*7)*(2*7)=(2*3*5*7)^2=perfect \ square.

Answer: E.

Similar questions to practice:
if-m-and-n-are-positive-integer-and-1800m-n3-what-is-108985.html
property-of-integers-104272.html
if-x-and-y-are-positive-integers-and-180x-y-100413.html
number-properties-92562.html
can-someone-answer-this-and-tell-me-why-92066.html
og-quantitative-91750.html
division-factor-88388.html
if-5400mn-k4-where-m-n-and-k-are-positive-integers-109284.html

Hope it helps.

OPEN DISCUSSION OF THIS QUESTION IS HERE: if-y-is-the-smallest-positive-integer-such-that-65323.html
_________________

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

Re: If y is the smallest positive integer such that 3,150 multip   [#permalink] 23 Feb 2014, 16:32
    Similar topics Author Replies Last post
Similar
Topics:
New posts If y is the smallest positive integer such that 3,150 mbassmbass04 4 01 Oct 2005, 15:15
New posts If Y is the smallest positive integer such that 3150 GMATCUBS21 6 14 Jun 2006, 18:26
New posts If y is the smallest positive integer such that 3150 puma 3 09 May 2008, 03:54
New posts 5 Experts publish their posts in the topic If y is the smallest positive integer such that 3,150 multip GMATD11 6 08 Mar 2011, 05:37
This topic is locked, you cannot edit posts or make further replies. New if y is the smallest positive interger such that 3150 multip kumar83 0 29 Aug 2013, 00:35
Display posts from previous: Sort by

If y is the smallest positive integer such that 3,150 multip

  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®.