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

It is currently 23 May 2019, 06:03

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

Is n equal to zero? (1) The product of n and some nonzero number is 0

  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: 55266
Is n equal to zero? (1) The product of n and some nonzero number is 0  [#permalink]

Show Tags

New post 26 Apr 2019, 02:25
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

94% (00:28) correct 6% (00:29) wrong based on 68 sessions

HideShow timer Statistics

Director
Director
User avatar
D
Joined: 18 Jul 2018
Posts: 905
Location: India
Concentration: Finance, Marketing
WE: Engineering (Energy and Utilities)
Premium Member Reviews Badge
Re: Is n equal to zero? (1) The product of n and some nonzero number is 0  [#permalink]

Show Tags

New post 26 Apr 2019, 04:22
From S1:

n*non-zero number = 0
Means n = 0
Sufficient.

From S2:

n+0 = 0
n = 0
Sufficient.

D is the answer.
_________________
Press +1 Kudo If my post helps!
Intern
Intern
User avatar
S
Joined: 14 Apr 2017
Posts: 44
Location: Hungary
GMAT 1: 690 Q50 V34
GMAT 2: 760 Q50 V42
GMAT 3: 700 Q50 V33
WE: Education (Education)
CAT Tests
Re: Is n equal to zero? (1) The product of n and some nonzero number is 0  [#permalink]

Show Tags

New post 27 Apr 2019, 06:27
Bunuel wrote:
Is n equal to zero?

(1) The product of n and some nonzero number is 0.
(2) The sum of n and 0 is 0.


DS65602.01
OG2020 NEW QUESTION


The original question: Is \(n=0\) ?

1) We know that \(n\cdot x=0\) and \(x\neq 0\). Since \(x\neq 0\), we can divide both sides of the previous equation by \(x\).

\(n=0\)

Thus, the answer to the original question is a definite Yes. \(\implies\) Sufficient

2) We know that \(n+0=0\), so \(n=0\). Thus, the answer to the original question is a definite Yes. \(\implies\) Sufficient

Answer: D
_________________
CEO
CEO
User avatar
V
Joined: 12 Sep 2015
Posts: 3724
Location: Canada
Re: Is n equal to zero? (1) The product of n and some nonzero number is 0  [#permalink]

Show Tags

New post 29 Apr 2019, 11:25
Top Contributor
Bunuel wrote:
Is n equal to zero?

(1) The product of n and some nonzero number is 0.
(2) The sum of n and 0 is 0.


Target question: Is n equal to zero?

Statement 1: The product of n and some nonzero number is 0
(n)(non-zero number) = 0
This means n must be 0
Since we can answer the target question with certainty, statement 1 is SUFFICIENT

Statement 2: The sum of n and 0 is 0
If n + 0 = 0, we can conclude that n must be 0
Since we can answer the target question with certainty, statement 2 is SUFFICIENT

Answer: D

Cheers,
Brent
_________________
Test confidently with gmatprepnow.com
Image
Target Test Prep Representative
User avatar
D
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 6206
Location: United States (CA)
Re: Is n equal to zero? (1) The product of n and some nonzero number is 0  [#permalink]

Show Tags

New post 06 May 2019, 20:22
Bunuel wrote:
Is n equal to zero?

(1) The product of n and some nonzero number is 0.
(2) The sum of n and 0 is 0.


DS65602.01
OG2020 NEW QUESTION


Statement One alone

The product of n and some nonzero number is 0.

Since the product of n and some nonzero number is 0, n must be zero.

Statement one alone is sufficient to answer the question.

Statement Two Alone:

The sum of n and 0 is 0.

The only way for the sum of 0 and another number to be 0 is if both numbers are zero.

Statement two alone is sufficient to answer the question.

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.

EMPOWERgmat Instructor
User avatar
V
Status: GMAT Assassin/Co-Founder
Affiliations: EMPOWERgmat
Joined: 19 Dec 2014
Posts: 14194
Location: United States (CA)
GMAT 1: 800 Q51 V49
GRE 1: Q170 V170
Re: Is n equal to zero? (1) The product of n and some nonzero number is 0  [#permalink]

Show Tags

New post 21 May 2019, 16:03
Hi All,

We're asked if N is equal to zero. This is a YES/NO question and can be answered with a mix of Number Properties and TESTing VALUES.

(1) The PRODUCT of N and some NON-ZERO number is 0

When multiplying any non-zero number by 0, the result will ALWAYS be 0 (for example: 1x0 = 0, 27x0 = 0, 0x135 = 0, etc.). With the information in Fact 1, we're multiplying two numbers - one of which we know is a non-zero number. Thus, the other number (re: "N") MUST be equal to zero, so the answer to the question is ALWAYS YES.
Fact 1 is SUFFICIENT

(2) The SUM of N and 0 is 0.

When adding two numbers together, there are two ways to end up with a sum of 0. The first is if the numbers are 'opposites' (for example: 1 and -1, 2 and -2, -17 and 17, etc.), then the sum will be zero. The second is if both numbers equal 0. The information in Fact 2 describes the second, so N MUST be 0 and the answer to the question is ALWAYS YES.
Fact 2 is SUFFICIENT

Final Answer:

GMAT assassins aren't born, they're made,
Rich
_________________
760+: Learn What GMAT Assassins Do to Score at the Highest Levels
Contact Rich at: Rich.C@empowergmat.com

*****Select EMPOWERgmat Courses now include ALL 6 Official GMAC CATs!*****

Rich Cohen

Co-Founder & GMAT Assassin

Special Offer: Save $75 + GMAT Club Tests Free
  Official GMAT Exam Packs + 70 Pt. Improvement Guarantee
www.empowergmat.com/
GMAT Club Bot
Re: Is n equal to zero? (1) The product of n and some nonzero number is 0   [#permalink] 21 May 2019, 16:03
Display posts from previous: Sort by

Is n equal to zero? (1) The product of n and some nonzero number is 0

  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®.