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

It is currently 18 Nov 2018, 00:30

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 November
PrevNext
SuMoTuWeThFrSa
28293031123
45678910
11121314151617
18192021222324
2526272829301
Open Detailed Calendar
  • How to QUICKLY Solve GMAT Questions - GMAT Club Chat

     November 20, 2018

     November 20, 2018

     09:00 AM PST

     10:00 AM PST

    The reward for signing up with the registration form and attending the chat is: 6 free examPAL quizzes to practice your new skills after the chat.
  • The winning strategy for 700+ on the GMAT

     November 20, 2018

     November 20, 2018

     06:00 PM EST

     07:00 PM EST

    What people who reach the high 700's do differently? We're going to share insights, tips and strategies from data we collected on over 50,000 students who used examPAL.

Does 2m - 3n = 0 (1) m ≠ 0 (2) 6m = 9n

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

Hide Tags

Intern
Intern
avatar
Joined: 22 Aug 2011
Posts: 5
Does 2m - 3n = 0 (1) m ≠ 0 (2) 6m = 9n  [#permalink]

Show Tags

New post 08 Nov 2011, 00:46
2
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

91% (00:39) correct 9% (01:02) wrong based on 119 sessions

HideShow timer Statistics

Does 2m - 3n = 0

(1) m ≠ 0
(2) 6m = 9n

The answer is B, but I don't understand why.

1. Can't you rewrite the above as 2m = 3n?

If M is...then N is
3 2
6 4
-3 -2
-6 -4

2. The explanation rewrites 2 as 3(2m = 3n) ad says Suff
Intern
Intern
avatar
Status: Accepted - SMU, Singapore (Class of 2013)
Joined: 08 Sep 2011
Posts: 27
Location: Singapore
Concentration: Finance, General Management
GMAT 1: 620 Q46 V29
GMAT 2: 710 Q50 V35
WE: Information Technology (Computer Software)
Re: Does 2m - 3n = 0 (1) m ≠ 0 (2) 6m = 9n  [#permalink]

Show Tags

New post 08 Nov 2011, 01:49
1
The question is not asking you to find possible values of (m,n). You are not required to do this at all. All you need to find out is whether 2m -3n = 0

Rewrite the question prompt as -
=> 2m = 3n
=> m/n = 3/2

Statement 1 - m != 0; This tells us nothing about 'n'. Insufficient.
Statement 2 - 6m = 9n => m/n = 3/2 ; The ratio m/n is same as that in the question prompt. Sufficient.

Ans. B
_________________

p!yu$h
http://gmatclub.com/forum/from-620-to-710-my-gmat-story-test-date-30-oct-122547.html#p995276

Intern
Intern
avatar
Joined: 09 Mar 2010
Posts: 28
Concentration: Technology, General Management
Schools: McCombs '14
GMAT ToolKit User
Re: Does 2m - 3n = 0 (1) m ≠ 0 (2) 6m = 9n  [#permalink]

Show Tags

New post 08 Nov 2011, 02:40
Damouse wrote:
Does 2m - 3n = 0

1. m not = 0
2. 6m = 9n

The answer is B, but I don't understand why.

1. Can't you rewrite the above as 2m = 3n?

If M is...then N is
3 2
6 4
-3 -2
-6 -4

2. The explanation rewrites 2 as 3(2m = 3n) ad says Suff



The qn says is 2m-3n = 0?
You need to have the values or stat tht gives the result.

i) m is not 0 (may or may not make the stat true)
ii) 6m = 9n implies 2m = 3n so proves the stat 2m-3n = 0 and the stat is true.
Intern
Intern
avatar
Joined: 29 Jun 2011
Posts: 25
Re: Does 2m - 3n = 0 (1) m ≠ 0 (2) 6m = 9n  [#permalink]

Show Tags

New post 15 Feb 2012, 23:33
piyushpachori wrote:
The question is not asking you to find possible values of (m,n). You are not required to do this at all. All you need to find out is whether 2m -3n = 0

Rewrite the question prompt as -
=> 2m = 3n
=> m/n = 3/2

Statement 1 - m != 0; This tells us nothing about 'n'. Insufficient.
Statement 2 - 6m = 9n => m/n = 3/2 ; The ratio m/n is same as that in the question prompt. Sufficient.

Ans. B


I probably complicate myself but still wish to clarify if this can be E.

Since the question didn't indicate it is m & n are both INTEGER, so put fraction into considerations as well.
When I put in
m = 2, n = 3 or m = 1/2, n = 1/3, B comes valid...so isn't it a vague question? or I missed any important step? pls advise..thanks
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 50624
Re: Does 2m - 3n = 0 (1) m ≠ 0 (2) 6m = 9n  [#permalink]

Show Tags

New post 16 Feb 2012, 00:05
miweekend wrote:
piyushpachori wrote:
The question is not asking you to find possible values of (m,n). You are not required to do this at all. All you need to find out is whether 2m -3n = 0

Rewrite the question prompt as -
=> 2m = 3n
=> m/n = 3/2

Statement 1 - m != 0; This tells us nothing about 'n'. Insufficient.
Statement 2 - 6m = 9n => m/n = 3/2 ; The ratio m/n is same as that in the question prompt. Sufficient.

Ans. B


I probably complicate myself but still wish to clarify if this can be E.

Since the question didn't indicate it is m & n are both INTEGER, so put fraction into considerations as well.
When I put in
m = 2, n = 3 or m = 1/2, n = 1/3, B comes valid...so isn't it a vague question? or I missed any important step? pls advise..thanks


You are right we are not told that m and n are integers, though we can get that statement (2) is sufficeint even not knowing that.

Does 2m - 3n = 0

Question basically asks whether \(2m=3n\)

(1) \(m\neq{0}\) --> clearly insufficient as no info about n.
(2) \(6m=9n\) --> reduce by 3: \(2m=3n\), so this statement directly answers the question (so here it doesn't matter whether m and n are integers). Sufficient.

Answer: B.

Hope it's clear.
_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics

Non-Human User
User avatar
Joined: 09 Sep 2013
Posts: 8805
Premium Member
Re: Does 2m - 3n = 0 (1) m ≠ 0 (2) 6m = 9n  [#permalink]

Show Tags

New post 04 Sep 2018, 11:53
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________

GMAT Books | GMAT Club Tests | Best Prices on GMAT Courses | GMAT Mobile App | Math Resources | Verbal Resources

GMAT Club Bot
Re: Does 2m - 3n = 0 (1) m ≠ 0 (2) 6m = 9n &nbs [#permalink] 04 Sep 2018, 11:53
Display posts from previous: Sort by

Does 2m - 3n = 0 (1) m ≠ 0 (2) 6m = 9n

  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®.