• 5-Day Free Trial
5-day free, full-access trial TTP Quant

Available with Beat the GMAT members only code

• Get 300+ Practice Questions
25 Video lessons and 6 Webinars for FREE

Available with Beat the GMAT members only code

• Magoosh
Study with Magoosh GMAT prep

Available with Beat the GMAT members only code

• FREE GMAT Exam
Know how you'd score today for $0 Available with Beat the GMAT members only code • Award-winning private GMAT tutoring Register now and save up to$200

Available with Beat the GMAT members only code

• 1 Hour Free
BEAT THE GMAT EXCLUSIVE

Available with Beat the GMAT members only code

• Free Practice Test & Review
How would you score if you took the GMAT

Available with Beat the GMAT members only code

• Free Trial & Practice Exam
BEAT THE GMAT EXCLUSIVE

Available with Beat the GMAT members only code

• Free Veritas GMAT Class
Experience Lesson 1 Live Free

Available with Beat the GMAT members only code

• 5 Day FREE Trial
Study Smarter, Not Harder

Available with Beat the GMAT members only code

## 500 ds test4#17

This topic has 1 member reply
dunkin77 Master | Next Rank: 500 Posts
Joined
01 Apr 2007
Posted:
269 messages

#### 500 ds test4#17

Thu Apr 05, 2007 4:38 pm
Hi,

. Is the positive integer n equal to the square of an integer?
(1) For every prime number p, if p is a divisor of n, then so is p^2.
(2) root n is an integer

gabriel Legendary Member
Joined
20 Dec 2006
Posted:
986 messages
Followed by:
1 members
51
Fri Apr 06, 2007 10:23 am
dunkin77 wrote:
Hi,

. Is the positive integer n equal to the square of an integer?
(1) For every prime number p, if p is a divisor of n, then so is p^2.
(2) root n is an integer
well B is pretty obvious .. if root of n is ann integer that is bcoz n is the square of another intger ..

let me focus on A .. consider a number 2^2*3^2... so the prime numbers that divide n are 2,3 and as the statement says both 2^2 and 3^2 are also factors of n .. in this case n is a square of an integer ...

now consider another number .. 2^3*3^2 ... in this case too the prime factors are 2,3 and also 4 and 9 divide the number but the number is not the square of an integer .. so A does not give a defnite answer .. so is insufficient ...

### Top First Responders*

1 GMATGuruNY 87 first replies
2 Brent@GMATPrepNow 66 first replies
3 Rich.C@EMPOWERgma... 35 first replies
4 Jay@ManhattanReview 25 first replies
5 Sionainn@Princeto... 16 first replies
* Only counts replies to topics started in last 30 days
See More Top Beat The GMAT Members

### Most Active Experts

1 Brent@GMATPrepNow

GMAT Prep Now Teacher

142 posts
2 GMATGuruNY

The Princeton Review Teacher

128 posts
3 Jeff@TargetTestPrep

Target Test Prep

123 posts
4 Scott@TargetTestPrep

Target Test Prep

102 posts
5 Max@Math Revolution

Math Revolution

88 posts
See More Top Beat The GMAT Experts