November 14, 2018 November 14, 2018 07:00 PM PST 08:00 PM PST Join the webinar and learn timemanagement tactics that will guarantee you answer all questions, in all sections, on time. Save your spot today! Nov. 14th at 7 PM PST November 15, 2018 November 15, 2018 10:00 PM MST 11:00 PM MST EMPOWERgmat is giving away the complete Official GMAT Exam Pack collection worth $100 with the 3 Month Pack ($299)
Author 
Message 
TAGS:

Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 50544

If n is an integer, is n + 1 odd?
[#permalink]
Show Tags
30 Jul 2012, 01:15
Question Stats:
91% (00:46) correct 9% (01:08) wrong based on 1388 sessions
HideShow timer Statistics




Math Expert
Joined: 02 Sep 2009
Posts: 50544

Re: If n is an integer, is n + 1 odd?
[#permalink]
Show Tags
30 Jul 2012, 01:16




Manager
Joined: 28 Sep 2011
Posts: 61
Location: United States
GMAT 1: 520 Q34 V27 GMAT 3: 690 Q47 V38
GPA: 3.01
WE: Information Technology (Commercial Banking)

Re: If n is an integer, is n + 1 odd?
[#permalink]
Show Tags
30 Jul 2012, 19:58
A. N, N+1, N+2. If N+2 is even, then N+1 is odd Sufficient B. N1, N, N+1. If N1 is odd, then N+1 is odd. Sufficient



Intern
Joined: 26 Jun 2012
Posts: 4

Re: If n is an integer, is n + 1 odd?
[#permalink]
Show Tags
03 Aug 2012, 04:05
The following Rules will be handy in order to solve this question:
Even Number (+/) Odd Number = Odd Number>(a) Even Number (+/) Even Number = Even Number>(b) Odd Number (+/) Odd Number = Even Number.>(c)
Now coming to the question stem: is N + 1 = Odd. From the question stem itself we know that 1 is an odd number and that the result is odd. From equation (a) above we know that this is only possible when n is even. So, the question is actually asking as if n is even?
Statement (1): n + 2`= Even. "2" as we know is even so this result is only possible if n is even (b). SUFFICIENT
Statement (2): n 1 = Odd. "1" is an Odd Number. This result is only possible if n is even (b). SUFFICIENT
Ans (D)



Math Expert
Joined: 02 Sep 2009
Posts: 50544

Re: If n is an integer, is n + 1 odd?
[#permalink]
Show Tags
03 Aug 2012, 04:46



Intern
Joined: 10 Sep 2015
Posts: 15

Re: If n is an integer, is n + 1 odd?
[#permalink]
Show Tags
11 Sep 2015, 00:04
statement 1 :n+2=even, n=even, n+1 == odd, sufficient Statement 2; n1=odd,n=even, n+1 == odd, sufficient
hence D



Target Test Prep Representative
Status: Head GMAT Instructor
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2830

Re: If n is an integer, is n + 1 odd?
[#permalink]
Show Tags
22 Jul 2016, 11:12
Bunuel wrote: The Official Guide for GMAT® Review, 13th Edition  Quantitative Questions ProjectIf n is an integer, is n + 1 odd? (1) n + 2 is an even integer. (2) n 1 is an odd integer. We need to determine whether n + 1 is odd. Remember, if n is even, then n + 1 will be odd, and if n is odd, n + 1 will be even. Statement One Alone:n + 2 is an even integer. Statement one tells us that n is an even integer (since 2 more than an even integer is also an even integer). Because n is an even integer, we know that n + 1 is odd. Statement one is sufficient to answer the question. We can eliminate answer choices B, C, and E. Statement Two Alone:n – 1 is an odd integer. Since subtraction rules for even and odd integers are the same as addition rules for even and odd integers, we know that if n – 1 is odd, then n itself must be even, and hence n + 1 must also be odd. Statement two is sufficient to answer the question. Answer: D
_________________
Jeffery Miller
Head of GMAT Instruction
GMAT Quant SelfStudy Course
500+ lessons 3000+ practice problems 800+ HD solutions



Current Student
Joined: 12 Aug 2015
Posts: 2633

Re: If n is an integer, is n + 1 odd?
[#permalink]
Show Tags
03 Dec 2016, 17:09
Here is my solution> Some Basic Rules before we attempt this Even/odd Question Even+Even=Even Even+Odd=Odd Odd+Even=Odd Odd+Odd=EvenSimilarly EvenEven=Even EvenOdd=Odd OddEven=Odd OddOdd=Even The Question is asking us whether n+1 is odd or not n+1 will be odd only when n is even. Hence question can be rephrased into "is n even" Statement 1 n+2 is even => n=even 2 => even Hence sufficient Statement 2 n1=odd Hence n=odd+1=> even
hence sufficient Hence D
_________________
MBA Financing: INDIAN PUBLIC BANKS vs PRODIGY FINANCE! Getting into HOLLYWOOD with an MBA! The MOST AFFORDABLE MBA programs!STONECOLD's BRUTAL Mock Tests for GMATQuant(700+)AVERAGE GRE Scores At The Top Business Schools!



NonHuman User
Joined: 09 Sep 2013
Posts: 8744

Re: If n is an integer, is n + 1 odd?
[#permalink]
Show Tags
16 Jul 2018, 12:51
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




Re: If n is an integer, is n + 1 odd? &nbs
[#permalink]
16 Jul 2018, 12:51






