Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 23 May 2017, 10:28

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# Is n an integer? n^2 is an integer sqrt(n) is an integer

Author Message
Director
Joined: 12 Jun 2006
Posts: 532
Followers: 2

Kudos [?]: 123 [0], given: 1

Is n an integer? n^2 is an integer sqrt(n) is an integer [#permalink]

### Show Tags

26 Feb 2007, 01:11
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Is n an integer?

n^2 is an integer
sqrt(n) is an integer
Manager
Joined: 12 Feb 2006
Posts: 115
Followers: 1

Kudos [?]: 75 [0], given: 0

### Show Tags

26 Feb 2007, 02:05
I'll give it a try.

I think it is B.

For A we don't know. Try 2 and 1.41 as examples of N^2 being an integer.

For B it says the sqrt(N) is an integer. Therefore N = an integer x an integer and this always results in an integer.
SVP
Joined: 01 May 2006
Posts: 1796
Followers: 9

Kudos [?]: 154 [0], given: 0

### Show Tags

26 Feb 2007, 02:11
Agree with bz9
Director
Joined: 12 Jun 2006
Posts: 532
Followers: 2

Kudos [?]: 123 [0], given: 1

### Show Tags

28 Feb 2007, 14:37
1.414214 works. Are there any other numbers that work too? Is there a way (ie equation) to prove this?
Senior Manager
Joined: 18 Feb 2007
Posts: 253
Followers: 1

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

### Show Tags

28 Feb 2007, 14:59
ggarr wrote:
1.414214 works. Are there any other numbers that work too? Is there a way (ie equation) to prove this?

sqrt(5),sqrt(6),sqrt(7), or any other integer hat does not have a square root..
Director
Joined: 12 Jun 2006
Posts: 532
Followers: 2

Kudos [?]: 123 [0], given: 1

### Show Tags

28 Feb 2007, 15:01
Quote:
any other integer hat does not have a square root
thanks. I should've seen that.
28 Feb 2007, 15:01
Display posts from previous: Sort by