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

It is currently 23 Jan 2019, 20:29

Close

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
Your Progress

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel
Events & Promotions in January
PrevNext
SuMoTuWeThFrSa
303112345
6789101112
13141516171819
20212223242526
272829303112
Open Detailed Calendar
  • Key Strategies to Master GMAT SC

     January 26, 2019

     January 26, 2019

     07:00 AM PST

     09:00 AM PST

    Attend this webinar to learn how to leverage Meaning and Logic to solve the most challenging Sentence Correction Questions.
  • Free GMAT Number Properties Webinar

     January 27, 2019

     January 27, 2019

     07:00 AM PST

     09:00 AM PST

    Attend this webinar to learn a structured approach to solve 700+ Number Properties question in less than 2 minutes.

If x is a positive integer, which of the following is not necessarily

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

 
Intern
Intern
avatar
G
Joined: 27 Feb 2018
Posts: 47
Location: India
Concentration: Strategy, Entrepreneurship
GMAT 1: 650 Q48 V32
GPA: 3.86
Premium Member
If x is a positive integer, which of the following is not necessarily  [#permalink]

Show Tags

New post 19 Sep 2018, 06:21
4
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

44% (01:32) correct 56% (01:23) wrong based on 25 sessions

HideShow timer Statistics

If x is a positive integer, which of the following is not necessarily a divisor of x(x+1)(x+2)x(x+1)(x+2)?

a)x
b)2
c)3
d)4
e)6

_________________

Stay in the fight. Die another day!
If my post is making difference in your preparation, Please, please give me a Kudos!!! Thanks

Intern
Intern
User avatar
B
Joined: 13 Mar 2018
Posts: 24
GPA: 3.12
WE: Project Management (Other)
Re: If x is a positive integer, which of the following is not necessarily  [#permalink]

Show Tags

New post 19 Sep 2018, 07:33
sahilkak wrote:
If x is a positive integer, which of the following is not necessarily a divisor of x(x+1)(x+2)x(x+1)(x+2)?

a)x
b)2
c)3
d)4
e)6



IMO, Answer should be "C". Please explain how OA is "D".

My solution:

If x= Odd:
Then => x(x+1)(x+2)x(x+1)(x+2)= Even
If x=Even:
Then => x(x+1)(x+2)x(x+1)(x+2)= Even

In both the cases, expression yields Even no. hence This expression can be divisible by all mentioned in the above options except "C" i.e. 3.

Please correct me if i am wrong.
Manager
Manager
avatar
G
Joined: 14 Jun 2018
Posts: 223
Re: If x is a positive integer, which of the following is not necessarily  [#permalink]

Show Tags

New post 19 Sep 2018, 07:43
Question seems wrong. x(x+1)(x+2) is this suppose to be twice ?
Intern
Intern
avatar
G
Joined: 27 Feb 2018
Posts: 47
Location: India
Concentration: Strategy, Entrepreneurship
GMAT 1: 650 Q48 V32
GPA: 3.86
Premium Member
Re: If x is a positive integer, which of the following is not necessarily  [#permalink]

Show Tags

New post 19 Sep 2018, 07:48
AnupamKT wrote:
sahilkak wrote:
If x is a positive integer, which of the following is not necessarily a divisor of x(x+1)(x+2)x(x+1)(x+2)?

a)x
b)2
c)3
d)4
e)6



IMO, Answer should be "C". Please explain how OA is "D".

My solution:

If x= Odd:
Then => x(x+1)(x+2)x(x+1)(x+2)= Even
If x=Even:
Then => x(x+1)(x+2)x(x+1)(x+2)= Even

In both the cases, expression yields Even no. hence This expression can be divisible by all mentioned in the above options except "C" i.e. 3.

Please correct me if i am wrong.


i was also mistaken in this question:
Here is official explanation


We’ll go for ALTERNATIVE since we’re asked about an expression with variables.

When looking at the answers, xx is definitely a divisor, since it is a multiplier in the expression itself. But what about the rest of the answers? Since this is an expression with only letters, we can pick a number: x=1x=1 gives us 1×2×3=61×2×3=6. So 2, 3, and 6 are all divisors of 6, but 4 isn’t.
_________________

Stay in the fight. Die another day!
If my post is making difference in your preparation, Please, please give me a Kudos!!! Thanks

Intern
Intern
avatar
G
Joined: 27 Feb 2018
Posts: 47
Location: India
Concentration: Strategy, Entrepreneurship
GMAT 1: 650 Q48 V32
GPA: 3.86
Premium Member
Re: If x is a positive integer, which of the following is not necessarily  [#permalink]

Show Tags

New post 19 Sep 2018, 07:49
1
pandeyashwin wrote:
Question seems wrong. x(x+1)(x+2) is this suppose to be twice ?



Keep in mind, the question reads: "which of the following is not NECESSARILY a divisor of x(x+1)(x+2)x(x+1)(x+2)?" That means there will be some answer choices where they all work. But you need to find the one where one of them doesn't work. Even though 4 is divisible when X=4, it is not divisible when X=1. The other answer choices will be divisible regardless of what X is equal to. So if you try X=4 and can't determine the correct answer, try incrementing your X value by one until you find the correct answer
_________________

Stay in the fight. Die another day!
If my post is making difference in your preparation, Please, please give me a Kudos!!! Thanks

GMAT Club Bot
Re: If x is a positive integer, which of the following is not necessarily &nbs [#permalink] 19 Sep 2018, 07:49
Display posts from previous: Sort by

If x is a positive integer, which of the following is not necessarily

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.