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

 It is currently 24 May 2013, 08:35

# N is a prime number bigger than 5. Which of the following

Author Message
TAGS:
SVP
Joined: 05 Apr 2005
Posts: 1745
Followers: 2

Kudos [?]: 17 [0], given: 0

N is a prime number bigger than 5. Which of the following [#permalink]  14 Aug 2005, 20:46
00:00

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
N is a prime number bigger than 5. Which of the following expressions must be even?

(a) (N+2)^2.
(b) N^2+2.
(c) N(N+2).
(d) (N+1)(N+2).
(e) (N â€“ 2)^2.

(Edit: I have edited the OP to add the power signs. Himalaya, please edited it back if this was not the correct version. - Hong)
Manager
Joined: 14 Jul 2005
Posts: 106
Location: Sofia, Bulgaria
Followers: 1

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

Does (N+2)2 denote (N+2)^2?

If so, the correct answer is (N+1)*(N+2), because (N+1) must be an even integer.
Manager
Joined: 28 Jun 2005
Posts: 219
Followers: 1

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

a) (N+2)^2.
(b) N^2+2.
(c) N(N+2).
(d) (N+1)(N+2).
(e) (N â€“ 2)^2.
Senior Manager
Joined: 30 May 2005
Posts: 287
Followers: 1

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

a) (N+2)^2.
(b) N^2+2.
(c) N(N+2).
(d) (N+1)(N+2).
(e) (N â€“ 2)^2.

well n be odd I PICK 7 another d
Current Student
Joined: 28 Dec 2004
Posts: 3439
Location: New York City
Schools: Wharton'11 HBS'12
Followers: 11

Kudos [?]: 134 [0], given: 2

they all are even...

if we take Vaslids approach then...D is clear

(N+1)(N+2)=even

N+1 has to be even....N+2 has to be odd...even*odd=even...always...
Similar topics Replies Last post
Similar
Topics:
The mean of 5 numbers is 6, is it deviation bigger than 10? 2 18 Oct 2004, 06:11
good one........ Q is a prime number bigger than 10. What 7 14 Aug 2005, 20:41
1 if N is a prime number bigger than 5 3 05 Mar 2010, 23:34
Which of the following numbers is not prime ? 5 03 May 2012, 01:14
If n is a prime number and n ≠ 3, which of the following 6 03 Nov 2012, 01:49
Display posts from previous: Sort by