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

It is currently 23 Jan 2019, 00:13

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 in January
PrevNext
SuMoTuWeThFrSa
303112345
6789101112
13141516171819
20212223242526
272829303112
Open Detailed Calendar
  • Key Strategies to Master GMAT SC

     January 26, 2019

     January 26, 2019

     07:00 AM PST

     09:00 AM PST

    Attend this webinar to learn how to leverage Meaning and Logic to solve the most challenging Sentence Correction Questions.
  • Free GMAT Number Properties Webinar

     January 27, 2019

     January 27, 2019

     07:00 AM PST

     09:00 AM PST

    Attend this webinar to learn a structured approach to solve 700+ Number Properties question in less than 2 minutes.

Is the two-digit positive integer, RM, a multiple of 7? (1) R + M = 13

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

Hide Tags

 
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 52412
Is the two-digit positive integer, RM, a multiple of 7? (1) R + M = 13  [#permalink]

Show Tags

New post 10 Dec 2018, 02:11
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

53% (01:28) correct 47% (01:04) wrong based on 62 sessions

HideShow timer Statistics

Manager
Manager
User avatar
G
Joined: 13 Jan 2018
Posts: 181
Location: India
GMAT 1: 580 Q47 V23
GPA: 4
Reviews Badge CAT Tests
Re: Is the two-digit positive integer, RM, a multiple of 7? (1) R + M = 13  [#permalink]

Show Tags

New post 10 Dec 2018, 02:41
(1) R + M = 13

R = 4 and M = 9
RM is divisible by 7.

R = 5 and M = 8
RM is not divisible by 7.

INSUFFICIENT

(2) R is divisible by 3

R = 6 or 9
M = 7 or 4

RM = 67 or 94. Both are not multiples of 7. SUFFICIENT.

OPTION: B
_________________

____________________________
Regards,

Chaitanya


+1 Kudos

if you like my explanation!!!

VP
VP
User avatar
G
Joined: 18 Aug 2017
Posts: 1312
Location: India
Concentration: Sustainability, Marketing
WE: Marketing (Energy and Utilities)
CAT Tests
Is the two-digit positive integer, RM, a multiple of 7? (1) R + M = 13  [#permalink]

Show Tags

New post Updated on: 10 Dec 2018, 08:23
Bunuel wrote:
Is the two-digit positive integer, RM, a multiple of 7?

(1) R + M = 13
(2) R is divisible by 3


from 1:

R,M can be
( 49,94,58,85,67,76)

so 49 is divisible by 7 so in sufficient


from 2: r divisible by 3 so RM can be ( 67 or 94) both are not divisible by 7 or 63 divisible by 7

insufficient

Combining 1 & 2 we get 94,67 both are in sufficient ,
so RM is not multiple of 7

IMO C
_________________

If you liked my solution then please give Kudos. Kudos encourage active discussions.


Originally posted by Archit3110 on 10 Dec 2018, 04:45.
Last edited by Archit3110 on 10 Dec 2018, 08:23, edited 1 time in total.
Rice (Jones) Thread Master
User avatar
S
Joined: 18 Jun 2018
Posts: 105
Location: United States (AZ)
Concentration: Finance, Healthcare
GPA: 3.86
CAT Tests
Is the two-digit positive integer, RM, a multiple of 7? (1) R + M = 13  [#permalink]

Show Tags

New post Updated on: 10 Dec 2018, 08:34
Archit3110 I am thinking C is the answer. Here is how:

Is RM multiple of 7?

St 1: RM could be 67 (insufficient), 85 (sufficient), or 94 (insufficient). So St 1 is insufficient

St 2: RM could be 63 (sufficient) or 67 (insufficient). So St 2 is insufficient

Combining Sts 1 and 2 (R + M = 13 and R is divisible by 3), RM = 67 (insufficient) or 94 (insufficient). So answer is C

Did I miss anything?

eswarchethu135

Archit3110 wrote:
Bunuel wrote:
Is the two-digit positive integer, RM, a multiple of 7?

(1) R + M = 13
(2) R is divisible by 3


from 1:

R,M can be
( 49,94,58,85,67,76)

so 49 is divisible by 7 so in sufficient


from 2: r divisible by 3 so RM can be ( 67 or 94) both are not divisible by 7

IMO B

Originally posted by funsogu on 10 Dec 2018, 07:11.
Last edited by funsogu on 10 Dec 2018, 08:34, edited 1 time in total.
VP
VP
User avatar
G
Joined: 18 Aug 2017
Posts: 1312
Location: India
Concentration: Sustainability, Marketing
WE: Marketing (Energy and Utilities)
CAT Tests
Is the two-digit positive integer, RM, a multiple of 7? (1) R + M = 13  [#permalink]

Show Tags

New post 10 Dec 2018, 08:19
funsogu wrote:
Archit3110 I am thinking E is the answer. Here is how:

Is RM multiple of 7?

St 1: RM could be 67 (insufficient), 85 (sufficient), or 94 (insufficient). So St 1 is insufficient

St 2: RM could be 63 (sufficient) or 67 (insufficient). So St 2 is insufficient

Combining Sts 1 and 2 (R + M = 13 and R is divisible by 3), RM = 67 (insufficient) or 94 (insufficient). So answer is E

Did I miss anything?

eswarchethu135

Archit3110 wrote:
Bunuel wrote:
Is the two-digit positive integer, RM, a multiple of 7?

(1) R + M = 13
(2) R is divisible by 3


from 1:

R,M can be
( 49,94,58,85,67,76)

so 49 is divisible by 7 so in sufficient


from 2: r divisible by 3 so RM can be ( 67 or 94) both are not divisible by 7

IMO B


funsogu : you seem to correct on stmnt 2 , it would be insufficient..

Combining 1 & 2 we get 94,67 ,so RM is not multiple of 7

IMO C
_________________

If you liked my solution then please give Kudos. Kudos encourage active discussions.

Rice (Jones) Thread Master
User avatar
S
Joined: 18 Jun 2018
Posts: 105
Location: United States (AZ)
Concentration: Finance, Healthcare
GPA: 3.86
CAT Tests
Re: Is the two-digit positive integer, RM, a multiple of 7? (1) R + M = 13  [#permalink]

Show Tags

New post 10 Dec 2018, 08:36
Archit3110 You are correct. I meant to say C. This how I lose easy points on DS questions.
VP
VP
User avatar
G
Joined: 18 Aug 2017
Posts: 1312
Location: India
Concentration: Sustainability, Marketing
WE: Marketing (Energy and Utilities)
CAT Tests
Re: Is the two-digit positive integer, RM, a multiple of 7? (1) R + M = 13  [#permalink]

Show Tags

New post 10 Dec 2018, 08:41
funsogu wrote:
Archit3110 You are correct. I meant to say C. This how I lose easy points on DS questions.


funsogu: no worries mate , its part of learning .. thanks to you for highlighting the error in my solution.. even i initially got the question wrong..
_________________

If you liked my solution then please give Kudos. Kudos encourage active discussions.

Senior Manager
Senior Manager
User avatar
P
Joined: 04 Jun 2018
Posts: 388
Location: Germany
Concentration: General Management, Finance
GPA: 3.6
WE: Analyst (Transportation)
Premium Member Reviews Badge CAT Tests
Re: Is the two-digit positive integer, RM, a multiple of 7? (1) R + M = 13  [#permalink]

Show Tags

New post 18 Dec 2018, 09:30
Can someone please explain where I went wrong:

1.) R+M = 13

E.g. 1+12,2+11,3+10,4+11...... 12+1

2.) R is divisible by 3

E.g. 3,6,9,12

1&2 combined could be:

R = 3,6,9,12
M = 10,7,4,1

30/7 does not work
56/7 would work

Please help me out :)
_________________

A couple of things that helped me in verbal:
https://gmatclub.com/forum/verbal-strategies-268700.html#p2082192

Gmat Prep CAT #1: V42, Q34, 630
Gmat Prep CAT #2: V46, Q35, 660
Gmat Prep CAT #3: V41, Q42, 680

On the mission to improve my quant score, all help is appreciated! :)

GMAT Tutor
User avatar
B
Joined: 07 Nov 2016
Posts: 46
GMAT 1: 760 Q51 V42
Premium Member CAT Tests
Re: Is the two-digit positive integer, RM, a multiple of 7? (1) R + M = 13  [#permalink]

Show Tags

New post 18 Dec 2018, 17:37
Arro44 wrote:
Can someone please explain where I went wrong:

1.) R+M = 13

E.g. 1+12,2+11,3+10,4+11...... 12+1

2.) R is divisible by 3

E.g. 3,6,9,12

1&2 combined could be:

R = 3,6,9,12
M = 10,7,4,1

30/7 does not work
56/7 would work

Please help me out :)

R and M are digits. They can only take values from 0 to 9
RM is a 2-digit number and not the product of R and M
hope it is clear
_________________

Please contact me at ksrutisagar@gmail.com

GMAT Club Bot
Re: Is the two-digit positive integer, RM, a multiple of 7? (1) R + M = 13 &nbs [#permalink] 18 Dec 2018, 17:37
Display posts from previous: Sort by

Is the two-digit positive integer, RM, a multiple of 7? (1) R + M = 13

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


Copyright

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®.