NEW HERE? LEARN MORE
closeclose
Last visit was: 12 May 2024, 23:19 It is currently 12 May 2024, 23:19
Decision Tracker
My Rewards
New posts
New comers' posts

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.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel

n represent the hundredths digit in the number shown above.

SORT BY:
Date
Kudos
Tags:
Find Similar Topics 
Show Tags
Hide Tags
User avatar
B
thevenus
Senior Manager
Senior Manager
Joined: 17 Mar 2010
Status:Final Countdown
Posts: 320
Own Kudos [?]: 1313 [29]
Given Kudos: 76
Location: United States (NY)
GPA: 3.82
WE:Account Management (Retail Banking)
Send PM
n represent the hundredths digit in the number shown above. [#permalink] New post   Updated on: 18 May 2014, 01:08
3
Kudos
26
Bookmarks
00:00
A
B
C
D
E

Difficulty:

15% (low)

Question Stats:

78% (01:09) correct 22% (01:19) wrong based on 483 sessions
Hide Show timer Statistics
Consider a Number 3.1n5

n represent the hundredths digit in the number shown above. If the number is rounded to the nearest hundredth, which of the following could be the tenths digit in the rounded number?

A. 0
B. 2
C. 4
D. 5
E. 6
ShowHide Answer
Official Answer
B

Originally posted by thevenus on 12 Jul 2012, 09:31.
Last edited by Bunuel on 18 May 2014, 01:08, edited 2 times in total.
Edited the question.
Most Helpful Reply
User avatar
L
Bunuel
Math Expert
Joined: 02 Sep 2009
Posts: 93184
Own Kudos [?]: 623284 [13]
Given Kudos: 81833
Send PM
CAT Tests Forum Quiz Mode
Re: n represent the hundredths digit in the number shown above. [#permalink] New post   12 Jul 2012, 12:41
5
Kudos
8
Bookmarks
Expert Reply
Rounding rules

Rounding is simplifying a number to a certain place value. To round the decimal drop the extra decimal places, and if the first dropped digit is 5 or greater, ROUND UP the last digit that you keep. If the first dropped digit is 4 or smaller, ROUND DOWN (keep the same) the last digit that you keep.

Example:
5.3485 rounded to the nearest tenth = 5.3, since the dropped 4 is less than 5.
5.3485 rounded to the nearest hundredth = 5.35, since the dropped 8 is greater than 5.
5.3485 rounded to the nearest thousandth = 5.349, since the dropped 5 is equal to 5.

For more check Number Theory chapter of Math Book: math-number-theory-88376.html

Hope it helps.

P.S. Please read and follow: rules-for-posting-please-read-this-before-posting-133935.html
User avatar
ConnectTheDots
Manager
Manager
Joined: 28 Apr 2012
Posts: 239
Own Kudos [?]: 951 [5]
Given Kudos: 142
Location: India
Concentration: Finance, Technology
Schools: Tepper '17 (A$) Kelley '17 (M$) Duke '17 (D) Cambridge'16 (D) Darden '17 (D) Tuck '17 (D)
GMAT 1: 650 Q48 V31
GMAT 2: 770 Q50 V47
WE:Information Technology (Computer Software)
Send PM
Re: Rounding number challenge [#permalink] New post   12 Jul 2012, 11:02
4
Kudos
1
Bookmarks
3.1n5 - if rounded upto tenth digit, it can either be 3.1 or 3.2 .
since 1 is not in choice, so 2 is the answer.

30 seconds. strip of the extra information : If the number is rounded to the nearest hundredth
General Discussion
avatar
gmatdaynnight
Intern
Intern
Joined: 28 Oct 2011
Posts: 1
Own Kudos [?]: 1 [1]
Given Kudos: 0
Send PM
GMAT ToolKit User
Re: Rounding number challenge [#permalink] New post   12 Jul 2012, 10:44
1
Kudos
thevenus wrote:
Consider a Number 3.1n5

n represent the hundredths digit in the number shown above. If the number is rounded to the nearest hundredth, which of the following could be the tenths digit in the rounded number?

A.0

B.2

C.4

D.5

E.6

Explanation only, will be appreciated.


HI All,

I got this one in 53 seconds, please let me know in case there is any faster way to solve these kinds of questions.

In theis ques we are given the thousandth digit as 5, so the hundreth digit can take any value from 0-9. For the hundreth digit i considered 2 set of values (i) 0, 1, 2, 3 and (ii) 4, 5, 6, 7, 8, 9. Given that the thousandth digit is 5, the undreth digit has to go up by 1, and correspondingly, the tenth digit should also increase by 1 ( provided the hundreth digit is from the 2nd category. Since B was the only one amongst the feasable ans choise, i selected B .
User avatar
KapTeacherEli
Kaplan GMAT Instructor
Joined: 25 Aug 2009
Posts: 613
Own Kudos [?]: 645 [0]
Given Kudos: 2
Location: Cambridge, MA
Send PM
Re: Rounding number challenge [#permalink] New post   12 Jul 2012, 11:51
Expert Reply
ahmed2502 wrote:
3.1n5 - if rounded upto tenth digit, it can either be 3.1 or 3.2 .
since 1 is not in choice, so 2 is the answer.

30 seconds. strip of the extra information : If the number is rounded to the nearest hundredth
Very good summary!

Rounding can only do two things to a digit that remains in the number: leave a digit unchanged, or increase a digit by 1 (which can reset a 9 to a zero and increase the NEXT digit).

Since the tenths digit is currently a 1, almost everything else in the Q-stem is irrelevant. The tenths digit can never round to anything other than a 1 or a 2, and so (B) is the only possible answer.
avatar
felipelengert
Intern
Intern
Joined: 14 Apr 2013
Posts: 3
Own Kudos [?]: 2 [0]
Given Kudos: 11
Send PM
Re: n represent the hundredths digit in the number shown above. [#permalink] New post   17 May 2014, 18:28
In my opinion this question is wrong.. If you round the number to the nearst hundredth, the tenth digit will certainly be 1.
But this options is not available..

Am I right?
User avatar
L
Bunuel
Math Expert
Joined: 02 Sep 2009
Posts: 93184
Own Kudos [?]: 623284 [3]
Given Kudos: 81833
Send PM
CAT Tests Forum Quiz Mode
Re: n represent the hundredths digit in the number shown above. [#permalink] New post   18 May 2014, 01:12
3
Kudos
Expert Reply
felipelengert wrote:
In my opinion this question is wrong.. If you round the number to the nearst hundredth, the tenth digit will certainly be 1.
But this options is not available..

Am I right?


No. If n=9, then 3.1n5 rounded to the nearest hundredth would be 3.2.
avatar
felipelengert
Intern
Intern
Joined: 14 Apr 2013
Posts: 3
Own Kudos [?]: 2 [0]
Given Kudos: 11
Send PM
Re: n represent the hundredths digit in the number shown above. [#permalink] New post   18 May 2014, 17:38
Good point... tks Bunuel!
User avatar
P
sony1000
Manager
Manager
Joined: 31 May 2015
Posts: 215
Own Kudos [?]: 180 [0]
Given Kudos: 219
Location: Fiji
Schools: IE
GPA: 1
Send PM
GMAT ToolKit User
Re: n represent the hundredths digit in the number shown above. [#permalink] New post   30 May 2016, 10:43
This question is quite confusing because it is asking the reader to look at the answers provided and n could mistakenly be associated with the answer choices, quite disturbing lol...
avatar
B
Meisme
Intern
Intern
Joined: 26 Apr 2018
Posts: 21
Own Kudos [?]: 7 [0]
Given Kudos: 35
Send PM
Re: n represent the hundredths digit in the number shown above. [#permalink] New post   05 Aug 2020, 17:54
The question only mentioned rounding to the hundredths, why would the tenths digit got impacted at all?
User avatar
B
pfrojasfellay
Intern
Intern
Joined: 15 Feb 2023
Posts: 1
Own Kudos [?]: 0 [0]
Given Kudos: 4
Send PM
Re: n represent the hundredths digit in the number shown above. [#permalink] New post   28 Mar 2023, 15:45
confusing question
GMAT Club Bot
gmatclubot
Re: n represent the hundredths digit in the number shown above. [#permalink]
28 Mar 2023, 15:45
Moderators:
Bunuel
Math Expert
93184 posts
yashikaaggarwal
Senior Moderator - Masters Forum
3137 posts

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne
Main navigation
GMAT Resources
Partners
MBA Resources
www.gmac.com|www.mba.com | | GMAT Club Rules | Terms and Conditions