GMAT Question of the Day: Daily via email | Daily via Instagram New to GMAT Club? Watch this Video

It is currently 11 Jul 2020, 13:59

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

A sequence is defined as follows: a(n)= (n)/(n+1) If n is a

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

Hide Tags

Find Similar Topics 
Manager
Manager
avatar
Joined: 09 Oct 2008
Posts: 83
A sequence is defined as follows: a(n)= (n)/(n+1) If n is a  [#permalink]

Show Tags

New post Updated on: 01 Nov 2013, 07:47
5
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

72% (01:58) correct 28% (02:05) wrong based on 125 sessions

HideShow timer Statistics

A sequence is defined as follows:
\(A_n= \frac{n}{n+1}\)
If n is a positive integer, then how many of the first 100 terms of this sequence are less than 0.891?

A. 7
B. 8
C. 9
D. 10
E. 12

M14-03

Originally posted by vishalgc on 12 Oct 2008, 05:01.
Last edited by Bunuel on 01 Nov 2013, 07:47, edited 2 times in total.
Renamed the topic, edited the question, added the OA and moved to PS forum.
Manager
Manager
avatar
Joined: 09 Oct 2008
Posts: 83
Re: Zero :good one  [#permalink]

Show Tags

New post 12 Oct 2008, 05:47
hi mohammed

can i know why you have not start series from 0? as 0/0+1 = 0/1 =0 < 0.881

In this case you will get 0,1,2,3,4,5,6,7,8--total 9 terms.

Thanks
GMAT Tutor
avatar
P
Joined: 24 Jun 2008
Posts: 2308
Re: Zero :good one  [#permalink]

Show Tags

New post 12 Oct 2008, 06:07
On the GMAT, the first term of a sequence is always a_1 (or b_1, or f(1), etc). Still, they always tell you that in the question itself, so I'm guessing the question above is not a real GMAT question.
_________________
GMAT Tutor in Montreal

If you are looking for online GMAT math tutoring, or if you are interested in buying my advanced Quant books and problem sets, please contact me at ianstewartgmat at gmail.com
Manager
Manager
avatar
Joined: 09 Oct 2008
Posts: 83
Re: Zero :good one  [#permalink]

Show Tags

New post 12 Oct 2008, 06:28
This quastion is from very standard source :)

Actually it happens many timesthat we forget to consider case 0 .. this time i specially paid attention and i got wrong ..so i was little annoyed and disappoint.. but from now i will consider series to be start from1 if not specified.

Thanks
Retired Moderator
User avatar
B
Joined: 05 Jul 2006
Posts: 1321
GMAT ToolKit User
Re: Zero :good one  [#permalink]

Show Tags

New post 12 Oct 2008, 06:34
why aren't we considering -ve intigers and fractions in this one??
Manager
Manager
avatar
Joined: 09 Oct 2008
Posts: 83
Re: Zero :good one  [#permalink]

Show Tags

New post 12 Oct 2008, 07:03
yezz

if we consider -VE and condition will always wrong .. means ratio will alway > 1..

same goes for fraction too..

just check by putting some arbitery values.

Tahsnk
Director
Director
avatar
Joined: 17 Jun 2008
Posts: 811
Re: Zero :good one  [#permalink]

Show Tags

New post 12 Oct 2008, 10:01
i dont think this is a std GMAT question!!
we are always told the range of n and type of n whether integer +ve or -ve etc
Director
Director
User avatar
Joined: 30 Jun 2008
Posts: 758
Re: Zero :good one  [#permalink]

Show Tags

New post 12 Oct 2008, 10:12
I agree with Ian and Priya. Real GMAT questions will have no ambiguity :) they will have traps but no ambiguity :)

They spend a lot too much on one question to ensure it is perfect.
Intern
Intern
User avatar
Joined: 12 Jul 2013
Posts: 9
Concentration: Economics, Finance
GMAT 1: 700 Q50 V34
GPA: 3.46
Re: A sequence is defined as follows: F(n)= (n)/(n+1) How many  [#permalink]

Show Tags

New post 01 Nov 2013, 06:59
At here, n/(n+1) <0.891 so we have that n=<8. we have 8 numbers which meet the requirement
_________________
What does't kill you makes you stronger.
Intern
Intern
avatar
B
Joined: 26 May 2014
Posts: 15
Re: A sequence is defined as follows: a(n)= (n)/(n+1) If n is a  [#permalink]

Show Tags

New post 15 May 2020, 21:46
As the question says Positive Integer
Least Positive Integer is "1".
"0" is only an integer. It is neither positive nor negative. Also "0" is neither even positive number nor a negative even number.
Intern
Intern
avatar
Joined: 09 Apr 2020
Posts: 3
Re: A sequence is defined as follows: a(n)= (n)/(n+1) If n is a  [#permalink]

Show Tags

New post 16 May 2020, 00:22
the ans should be A instead of B as 0 can not be considered because n is a positive integer. if it would have been a non- negative integer we would have considered 0. but the least value we can start as per the condition will be 1. STRONG AMBIGUITY HERE !!!!!
GMAT Club Bot
Re: A sequence is defined as follows: a(n)= (n)/(n+1) If n is a   [#permalink] 16 May 2020, 00:22

A sequence is defined as follows: a(n)= (n)/(n+1) If n is a

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





cron

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