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

It is currently 16 Aug 2018, 20:47

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

If x = n!, is x divisible by 11?

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

Hide Tags

Math Expert
User avatar
V
Joined: 02 Aug 2009
Posts: 6537
If x = n!, is x divisible by 11?  [#permalink]

Show Tags

New post 29 Oct 2017, 01:01
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

59% (00:33) correct 41% (00:48) wrong based on 48 sessions

HideShow timer Statistics

If \(x=n!\), is x divisible by 11?

(1) n is not divisible by 11.
(2) n is a single digit number.


self made

_________________

1) Absolute modulus : http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html
3) effects of arithmetic operations : https://gmatclub.com/forum/effects-of-arithmetic-operations-on-fractions-269413.html


GMAT online Tutor

Manager
Manager
avatar
B
Joined: 15 Aug 2016
Posts: 79
Re: If x = n!, is x divisible by 11?  [#permalink]

Show Tags

New post 29 Oct 2017, 11:11
IMO B.

Statement 1: N can be 13 or 9. If 13, then 13! is divisible by 11 but 9! isnt. Insuff.

Statement 2: 11 is a prime number. So Numerator should have 11 or its multiple in it but it will never have 11 since maximum value of n is 9 and 9! is not divisible by 11.Suff.
Re: If x = n!, is x divisible by 11? &nbs [#permalink] 29 Oct 2017, 11:11
Display posts from previous: Sort by

If x = n!, is x divisible by 11?

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

Events & Promotions

PREV
NEXT


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®.