GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 19 May 2019, 18:14

### 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

# If x is an odd integer, which of the following must be an odd integer?

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 55150
If x is an odd integer, which of the following must be an odd integer?  [#permalink]

### Show Tags

26 Nov 2018, 23:31
00:00

Difficulty:

15% (low)

Question Stats:

83% (01:03) correct 17% (00:54) wrong based on 39 sessions

### HideShow timer Statistics

If x is an odd integer, which of the following must be an odd integer?

A. x^4 + 1
B. x^4 − 1
C. (x+1)^5 − 2
D. (x+1)^5 + 1
E. (x+1)^6 + 2

_________________
CEO
Joined: 18 Aug 2017
Posts: 3451
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
Re: If x is an odd integer, which of the following must be an odd integer?  [#permalink]

### Show Tags

27 Nov 2018, 08:23
Bunuel wrote:
If x is an odd integer, which of the following must be an odd integer?

A. x^4 + 1
B. x^4 − 1
C. (x+1)^5 − 2
D. (x+1)^5 + 1
E. (x+1)^6 + 2

Plug in x= 1 only option D suffices ..
_________________
If you liked my solution then please give Kudos. Kudos encourage active discussions.
Intern
Joined: 25 May 2018
Posts: 25
Re: If x is an odd integer, which of the following must be an odd integer?  [#permalink]

### Show Tags

27 Nov 2018, 09:45
take x=1 and plug in values.
D is the only value which suffices the situation

But since X is an integer, check for X=-1 as well!
Re: If x is an odd integer, which of the following must be an odd integer?   [#permalink] 27 Nov 2018, 09:45
Display posts from previous: Sort by