It is currently 23 Nov 2017, 21:02

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

fractions

Author Message
Senior Manager
Joined: 19 Nov 2007
Posts: 457

Kudos [?]: 224 [0], given: 4

Show Tags

10 Jun 2009, 16:11
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 100% (01:29) wrong based on 1 sessions

HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

If the fraction $$m/n$$ is negative, which of the following cannot be true?

1]$$n/m > m/n$$
2] mn < 0
3] n-m >0
4] $$mn^3$$ > 0
5] m-n > 0
_________________

-Underline your question. It takes only a few seconds!
-Search before you post.

Kudos [?]: 224 [0], given: 4

Current Student
Joined: 03 Aug 2006
Posts: 115

Kudos [?]: 309 [0], given: 3

Show Tags

10 Jun 2009, 16:35

Given
$$\frac{m}{n}<0$$

i.e. if m is +ve then n is -ve
or
if n is +ve then m is -ve

Looking at (4)

$$mn^3>0$$

i.e. if m is +ve then $$n^3$$ is also +ve (i.e n is +ve)
or
if m is -ve then $$n^3$$ is also -ve (i.e. n is -ve)

but that is not what is told to us so (4) cannot be true.

Kudos [?]: 309 [0], given: 3

Manager
Joined: 28 Jan 2004
Posts: 202

Kudos [?]: 30 [0], given: 4

Location: India

Show Tags

10 Jun 2009, 18:07
D.
The sign of MN^3 had to be -ve as either M or N is -ve (because M/N is -ve).
Remaining all the stmt. are either true or false depending on the values of M and N.

Kudos [?]: 30 [0], given: 4

Re: fractions   [#permalink] 10 Jun 2009, 18:07
Display posts from previous: Sort by