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

It is currently 19 Oct 2019, 15:26

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

3, 6, 9, 12, … are multiples of 3. How many multiples of 3 lie between

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

Hide Tags

Find Similar Topics 
Math Revolution GMAT Instructor
User avatar
V
Joined: 16 Aug 2015
Posts: 8017
GMAT 1: 760 Q51 V42
GPA: 3.82
3, 6, 9, 12, … are multiples of 3. How many multiples of 3 lie between  [#permalink]

Show Tags

New post 31 Oct 2018, 02:46
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

85% (01:17) correct 15% (01:39) wrong based on 58 sessions

HideShow timer Statistics

[Math Revolution GMAT math practice question]

\(3, 6, 9, 12, …\) are multiples of \(3\). How many multiples of \(3\) lie between \(10\) and \(200\), inclusive?

\(A. 54\)
\(B. 57\)
\(C. 60\)
\(D. 63\)
\(E. 66\)

_________________
MathRevolution: Finish GMAT Quant Section with 10 minutes to spare
The one-and-only World’s First Variable Approach for DS and IVY Approach for PS with ease, speed and accuracy.
"Only $79 for 1 month Online Course"
"Free Resources-30 day online access & Diagnostic Test"
"Unlimited Access to over 120 free video lessons - try it yourself"
VP
VP
User avatar
D
Joined: 31 Oct 2013
Posts: 1465
Concentration: Accounting, Finance
GPA: 3.68
WE: Analyst (Accounting)
CAT Tests
Re: 3, 6, 9, 12, … are multiples of 3. How many multiples of 3 lie between  [#permalink]

Show Tags

New post 31 Oct 2018, 03:07
1
MathRevolution wrote:
[Math Revolution GMAT math practice question]

\(3, 6, 9, 12, …\) are multiples of \(3\). How many multiples of \(3\) lie between \(10\) and \(200\), inclusive?

\(A. 54\)
\(B. 57\)
\(C. 60\)
\(D. 63\)
\(E. 66\)



Between 10 and 200 , inclusive.

First multiple of 3 in the range : 12 =3*4

Last Multiple of 3 in the range : 198 = 3*66

Total no. of multiple in the range : 66 - 4 + 1 = 63.

The best answer is D.
Intern
Intern
avatar
B
Joined: 16 Mar 2016
Posts: 7
Location: Uzbekistan
GMAT ToolKit User
Re: 3, 6, 9, 12, … are multiples of 3. How many multiples of 3 lie between  [#permalink]

Show Tags

New post 31 Oct 2018, 03:20
number of integers : 200-10=190 integers.
every third integer is a multiple of 3 so 190/3=63
Senior Manager
Senior Manager
User avatar
S
Status: No dream is too large, no dreamer is too small
Joined: 14 Jul 2010
Posts: 422
Re: 3, 6, 9, 12, … are multiples of 3. How many multiples of 3 lie between  [#permalink]

Show Tags

New post 31 Oct 2018, 03:46
Top Contributor
The multiples are 12,15....198

Thus, Nth= a1+ (n-1)d
198= 12 + (n-1)d
198= 12 + (n-1)3
N= 63 ans.

Posted from my mobile device
_________________
Senior Manager
Senior Manager
avatar
G
Joined: 04 Aug 2010
Posts: 477
Schools: Dartmouth College
3, 6, 9, 12, … are multiples of 3. How many multiples of 3 lie between  [#permalink]

Show Tags

New post 31 Oct 2018, 04:41
MathRevolution wrote:
[Math Revolution GMAT math practice question]

\(3, 6, 9, 12, …\) are multiples of \(3\). How many multiples of \(3\) lie between \(10\) and \(200\), inclusive?

\(A. 54\)
\(B. 57\)
\(C. 60\)
\(D. 63\)
\(E. 66\)


The difference between the endpoints of the range = 200-10 = 190.
Since neither endpoint is a multiple of 3, we can count the multiples of 3 simply by dividing 3 into 190:
190/3 ≈ 63


_________________
GMAT and GRE Tutor
Over 1800 followers
GMATGuruNY@gmail.com
New York, NY
If you find one of my posts helpful, please take a moment to click on the "Kudos" icon.
Available for tutoring in NYC and long-distance.
For more information, please email me at GMATGuruNY@gmail.com.
Math Revolution GMAT Instructor
User avatar
V
Joined: 16 Aug 2015
Posts: 8017
GMAT 1: 760 Q51 V42
GPA: 3.82
Re: 3, 6, 9, 12, … are multiples of 3. How many multiples of 3 lie between  [#permalink]

Show Tags

New post 02 Nov 2018, 01:31
=>

\(12\) is the smallest multiple of \(3\) and \(198\) is the largest multiple of \(3\) between \(10\) and \(200\), inclusive.
Thus, the number of multiples of \(3\) between \(10\) and \(200\), inclusive is \(\frac{( 198 – 12 )}{3 + 1} = \frac{186}{3} + 1 = 62 + 1 = 63\)

Therefore, the answer is D.
Answer: D
_________________
MathRevolution: Finish GMAT Quant Section with 10 minutes to spare
The one-and-only World’s First Variable Approach for DS and IVY Approach for PS with ease, speed and accuracy.
"Only $79 for 1 month Online Course"
"Free Resources-30 day online access & Diagnostic Test"
"Unlimited Access to over 120 free video lessons - try it yourself"
Target Test Prep Representative
User avatar
D
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 8109
Location: United States (CA)
Re: 3, 6, 9, 12, … are multiples of 3. How many multiples of 3 lie between  [#permalink]

Show Tags

New post 03 Nov 2018, 18:08
MathRevolution wrote:
[Math Revolution GMAT math practice question]

\(3, 6, 9, 12, …\) are multiples of \(3\). How many multiples of \(3\) lie between \(10\) and \(200\), inclusive?

\(A. 54\)
\(B. 57\)
\(C. 60\)
\(D. 63\)
\(E. 66\)


The smallest multiple of 3 within the range is 12 and the largest is 198. So the number of multiples of 3 within the range is:

(198 - 12)/3 + 1 = 186/3 + 1= 62 + 1 = 63

Answer: D
_________________

Scott Woodbury-Stewart

Founder and CEO

Scott@TargetTestPrep.com
TTP - Target Test Prep Logo
122 Reviews

5-star rated online GMAT quant
self study course

See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews

If you find one of my posts helpful, please take a moment to click on the "Kudos" button.

Manager
Manager
User avatar
P
Joined: 13 Jun 2012
Posts: 199
Location: United States
WE: Supply Chain Management (Computer Hardware)
GMAT ToolKit User CAT Tests
Re: 3, 6, 9, 12, … are multiples of 3. How many multiples of 3 lie between  [#permalink]

Show Tags

New post 03 Nov 2018, 18:39
MathRevolution wrote:
[Math Revolution GMAT math practice question]

\(3, 6, 9, 12, …\) are multiples of \(3\). How many multiples of \(3\) lie between \(10\) and \(200\), inclusive?

\(A. 54\)
\(B. 57\)
\(C. 60\)
\(D. 63\)
\(E. 66\)


Last digit- First/spacing between digits + 1

198-12/3 +1
62+1=63
GMAT Club Bot
Re: 3, 6, 9, 12, … are multiples of 3. How many multiples of 3 lie between   [#permalink] 03 Nov 2018, 18:39
Display posts from previous: Sort by

3, 6, 9, 12, … are multiples of 3. How many multiples of 3 lie between

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





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