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

 It is currently 21 Jun 2018, 03:34

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

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

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Is M < 0 ? 1. -M = |-M| 2. M^2 = 9 Your thoughts and

 post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
VP
Joined: 05 Jul 2008
Posts: 1338
Is M < 0 ? 1. -M = |-M| 2. M^2 = 9 Your thoughts and [#permalink]

Show Tags

10 Oct 2008, 17:30
Is $$M < 0$$ ?

1. $$-M = |-M|$$
2. $$M^2 = 9$$

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
Senior Manager
Joined: 21 Apr 2008
Posts: 265
Location: Motortown
Re: Absolute value of M [#permalink]

Show Tags

10 Oct 2008, 17:51
A

1. -m =|-m|
-m = m
2m = 0
m= 0

Is m<0 ? NO
Sufficient

2. m = -3 or 3
Not Sufficient
Manager
Joined: 09 Oct 2008
Posts: 93
Re: Absolute value of M [#permalink]

Show Tags

10 Oct 2008, 18:04
A:
we are comparing positive value(righthand side's) with negative values(-m)..means m must be negative number : m<0 yes

A is suff.

B: m=3 or -3 not suff.

IMO :A
VP
Joined: 30 Jun 2008
Posts: 1008
Re: Absolute value of M [#permalink]

Show Tags

10 Oct 2008, 19:58
vishalgc wrote:
A:
we are comparing positive value(righthand side's) with negative values(-m)..means m must be negative number : m<0 yes

A is suff.

B: m=3 or -3 not suff.

IMO :A

M *cant be negative*.

The only number which satisfies the condition in statement 1 is 0

From statement 2 we get 2 answers +3 and -3. We cannot say for sure if M is -ve or +ve.

So answer is A

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

_________________

"You have to find it. No one else can find it for you." - Bjorn Borg

Re: Absolute value of M   [#permalink] 10 Oct 2008, 19:58
Display posts from previous: Sort by

Is M < 0 ? 1. -M = |-M| 2. M^2 = 9 Your thoughts and

 post reply Question banks Downloads My Bookmarks Reviews Important topics

Moderator: chetan2u

 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®.