Summer is Coming! Join the Game of Timers Competition to Win Epic Prizes. Registration is Open. Game starts Mon July 1st.

It is currently 21 Jul 2019, 12:18

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 N is a positive integer, what is the tens digit of N?

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

Hide Tags

Find Similar Topics 
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 56307
If N is a positive integer, what is the tens digit of N?  [#permalink]

Show Tags

New post 07 Mar 2016, 08:53
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

75% (01:26) correct 25% (01:23) wrong based on 209 sessions

HideShow timer Statistics


Manager
Manager
avatar
B
Joined: 07 May 2015
Posts: 175
Location: India
GMAT 1: 660 Q48 V31
GPA: 3
GMAT ToolKit User
Re: If N is a positive integer, what is the tens digit of N?  [#permalink]

Show Tags

New post 07 Mar 2016, 20:17
2
St1 : number can be 25, 50 etc

InSufficient

St2: number can be 16, 32 etc
Insufficient

St1 & St 2
finding LCM of 16 and 25 = 400

so all multiple of 400 will be : 400 , 800, 1600
tens digit is = 0

Ans: C
Current Student
User avatar
D
Joined: 12 Aug 2015
Posts: 2609
Schools: Boston U '20 (M)
GRE 1: Q169 V154
GMAT ToolKit User
Re: If N is a positive integer, what is the tens digit of N?  [#permalink]

Show Tags

New post 09 Mar 2016, 21:42
2
Here is my approach =>
statement 1 tells us Unit digit can be 0 or 5 => not sufficient
statement two tells us the unit digits must be even => not sufficient
Combining them => unit digits must be zero => C is sufficient
_________________
Senior Manager
Senior Manager
User avatar
Joined: 20 Aug 2015
Posts: 388
Location: India
GMAT 1: 760 Q50 V44
Re: If N is a positive integer, what is the tens digit of N?  [#permalink]

Show Tags

New post 10 Mar 2016, 02:07
1
2
Bunuel wrote:
If N is a positive integer, what is the tens digit of N?

(1) N is divisible by 25.

(2) N is divisible by 16.


Given: N > 0 and integer
Required: Tens digit of N?

Statement 1: N is divisible by 25
N = 25 or 50
Hence we cannot tell the tens digit.
INSUFFICIENT

Statement 2: N is divisible by 16
N = 16 or 32
We cannot tell the tens digit
INSUFFICIENT

Combining Statement 1 and Statement 2:
N is a multiple of both 16 and 25
Hence N is a multiple of 400
N = 400, 800, ...
In all the cases, the tens digit will be 0
SUFFICIENT

Option C
Current Student
User avatar
D
Joined: 12 Aug 2015
Posts: 2609
Schools: Boston U '20 (M)
GRE 1: Q169 V154
GMAT ToolKit User
Re: If N is a positive integer, what is the tens digit of N?  [#permalink]

Show Tags

New post 15 Mar 2016, 09:29
Manager
Manager
avatar
B
Joined: 03 Sep 2018
Posts: 63
Re: If N is a positive integer, what is the tens digit of N?  [#permalink]

Show Tags

New post 27 Dec 2018, 06:45
stonecold wrote:
Here Clearly 1 and 2 statement are not sufficient as there are numerous values.
combining the we can say that tens digit will be 0
hence C


The question, however, asks for the tens digit.
_________________
Please consider giving Kudos if my post contained a helpful reply or question.
GMAT Club Bot
Re: If N is a positive integer, what is the tens digit of N?   [#permalink] 27 Dec 2018, 06:45
Display posts from previous: Sort by

If N is a positive integer, what is the tens digit of N?

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





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