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

It is currently 22 Jun 2018, 05:50

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

Events & Promotions in June
Open Detailed Calendar

If k is a positive integer, then k is defined as the product of all t

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

Hide Tags

Senior Manager
Senior Manager
User avatar
D
Joined: 02 Jan 2017
Posts: 314
Location: Canada
Reviews Badge
If k is a positive integer, then k is defined as the product of all t [#permalink]

Show Tags

New post 25 Apr 2017, 06:21
1
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

71% (01:18) correct 29% (00:50) wrong based on 85 sessions

HideShow timer Statistics

If k is a positive integer, then k@ is defined as the product of all the fractions of the form 1/S, where S is a positive integer not greater than k. What is the value of 5@/4@?

A. 1/5

B. 4/5

C. 1

D. 5/4

E. 5
Expert Post
Top Contributor
CEO
CEO
User avatar
P
Joined: 12 Sep 2015
Posts: 2568
Location: Canada
Re: If k is a positive integer, then k is defined as the product of all t [#permalink]

Show Tags

New post 25 Apr 2017, 06:29
Top Contributor
1
vikasp99 wrote:
If k is a positive integer, then k@ is defined as the product of all the fractions of the form 1/S, where S is a positive integer not greater than k. What is the value of 5@/4@?

A. 1/5

B. 4/5

C. 1

D. 5/4

E. 5


5@/4@ = (1/1)(1/2)(1/3)(1/4)(1/5)/(1/1)(1/2)(1/3)(1/4)
= 1/5

Answer:

Cheers,
Brent
_________________

Brent Hanneson – Founder of gmatprepnow.com

Image

Intern
Intern
avatar
B
Joined: 27 Dec 2015
Posts: 30
Re: If k is a positive integer, then k is defined as the product of all t [#permalink]

Show Tags

New post 01 May 2017, 08:27
GMATPrepNow wrote:
vikasp99 wrote:
If k is a positive integer, then k@ is defined as the product of all the fractions of the form 1/S, where S is a positive integer not greater than k. What is the value of 5@/4@?

A. 1/5

B. 4/5

C. 1

D. 5/4

E. 5


5@/4@ = (1/1)(1/2)(1/3)(1/4)(1/5)/(1/1)(1/2)(1/3)(1/4)
= 1/5

Answer:

Cheers,
Brent



**Hi, It said S can be less than or equal to K, so for @5 the value of S could be 1,2,3,4 or 5 and for @4 the value of S could be 1,2,3,4...so while calculating @5/@4 with value of S as 4 for @5 and similarly S=4 for @4 the answer would be 1...So there is lots of ambiguity in this question.
Expert Post
Top Contributor
CEO
CEO
User avatar
P
Joined: 12 Sep 2015
Posts: 2568
Location: Canada
Re: If k is a positive integer, then k is defined as the product of all t [#permalink]

Show Tags

New post 01 May 2017, 08:33
Top Contributor
IIMC wrote:
GMATPrepNow wrote:
vikasp99 wrote:
If k is a positive integer, then k@ is defined as the product of all the fractions of the form 1/S, where S is a positive integer not greater than k. What is the value of 5@/4@?

A. 1/5

B. 4/5

C. 1

D. 5/4

E. 5


5@/4@ = (1/1)(1/2)(1/3)(1/4)(1/5)/(1/1)(1/2)(1/3)(1/4)
= 1/5

Answer:

Cheers,
Brent



**Hi, It said S can be less than or equal to K, so for @5 the value of S could be 1,2,3,4 or 5 and for @4 the value of S could be 1,2,3,4...so while calculating @5/@4 with value of S as 4 for @5 and similarly S=4 for @4 the answer would be 1...So there is lots of ambiguity in this question.


But the questions say "....all the fractions of the form 1/S"

Cheers,
Brent
_________________

Brent Hanneson – Founder of gmatprepnow.com

Image

Re: If k is a positive integer, then k is defined as the product of all t   [#permalink] 01 May 2017, 08:33
Display posts from previous: Sort by

If k is a positive integer, then k is defined as the product of all t

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


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®.