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# is n an integer

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Manager
Joined: 08 Dec 2006
Posts: 79
Location: United States
Concentration: Entrepreneurship, General Management
Schools: Harvard Business School (HBS) - Class of 2014
GPA: 3.64
WE: Engineering (Aerospace and Defense)
Followers: 32

Kudos [?]: 69 [0], given: 3

is n an integer [#permalink]  17 Jan 2009, 08:46
is n an integer ???
1) n^2 is an integer
2) sqrt of n is an integer

Senior Manager
Joined: 02 Nov 2008
Posts: 283
Followers: 1

Kudos [?]: 43 [0], given: 2

Re: is n an integer [#permalink]  17 Jan 2009, 08:53
Abhishek.pitti wrote:
is n an integer ???
1) n^2 is an integer
2) sqrt of n is an integer

This question was answered a few days ago so for a more thorough answer do a quick search on the forum

1) (1.7)^2 = 3
2) sqrt n = integer means n will always be an integer (just try to plug in several #'s and you'll see this is true)

B
Intern
Joined: 16 Jan 2009
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Kudos [?]: 11 [0], given: 0

Re: is n an integer [#permalink]  17 Jan 2009, 10:40
is n an integer ???
1) n^2 is an integer
2) sqrt of n is an integer

statement1: n^2 is an integer say n^2 is 2 , then n is not a integer
say n^2 is 4 , then n is a integer
so statement1 is not sufficient

statement2. sqrt of n is an integer say sqrt of n be 2 , then n = 4 which is a integer
say sqrt of n be 4 then n = 16 which is a integer

statement2 is sufficient

Manager
Joined: 08 Dec 2006
Posts: 79
Location: United States
Concentration: Entrepreneurship, General Management
Schools: Harvard Business School (HBS) - Class of 2014
GPA: 3.64
WE: Engineering (Aerospace and Defense)
Followers: 32

Kudos [?]: 69 [0], given: 3

Re: is n an integer [#permalink]  17 Jan 2009, 10:57
thank you guys!!

quick fix is substitute a no., a non perfect sqaure.

Great!!!
Manager
Joined: 04 Jan 2009
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Re: is n an integer [#permalink]  19 Jan 2009, 13:28
Abhishek.pitti wrote:
thank you guys!!

quick fix is substitute a no., a non perfect sqaure.

Great!!!

may be the question should have been is n non-negative integer?
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tusharvk

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Joined: 27 May 2008
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Re: is n an integer [#permalink]  20 Jan 2009, 01:39
tusharvk wrote:
Abhishek.pitti wrote:
thank you guys!!

quick fix is substitute a no., a non perfect sqaure.

Great!!!

may be the question should have been is n non-negative integer?

i dont think complex numbers are used in GMAT!
Re: is n an integer   [#permalink] 20 Jan 2009, 01:39
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