Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 09 Feb 2016, 21:33

### 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

# If m=−2, what is −m^−m?

Author Message
TAGS:
Manager
Joined: 05 Nov 2012
Posts: 173
Followers: 1

Kudos [?]: 26 [0], given: 57

If m=−2, what is −m^−m? [#permalink]  19 Dec 2012, 22:27
00:00

Difficulty:

45% (medium)

Question Stats:

33% (01:36) correct 67% (00:19) wrong based on 88 sessions
If m=−2, what is −m^−m?

A. −16
B. −4
C. −1/4
D. 1/4
E. 4

Source HULT
[Reveal] Spoiler: OA
Manager
Joined: 05 Nov 2012
Posts: 173
Followers: 1

Kudos [?]: 26 [0], given: 57

Re: If m=−2, what is [#permalink]  19 Dec 2012, 22:29
I thought this to be a poor quality question because they did not mention either - m^-m or (-m)^-m..... i took it for the second one and flipped the sign... Am I being wrong in understanding GMAT presentation?
Manager
Joined: 08 Apr 2012
Posts: 129
Followers: 11

Kudos [?]: 81 [1] , given: 14

Re: If m=−2, what is [#permalink]  19 Dec 2012, 22:31
1
KUDOS
Amateur wrote:
If m=−2, what is −m^−m?
−16

−4

−1/4

1/4

4

SOurce HULT

This is a pretty simple one that can be solved by substitution. But take it step by step and simplify. But the confusion in the questions is whether the - sign in the base is with 2 or outside. In the absence of bracket, we'll take it outside..

$$-m^{-m}$$, m = -2
=> $$-(2^{-(-2)})$$
=>$$-2^2$$
=-4
_________________

Shouvik
http://www.Edvento.com

Senior Manager
Joined: 13 Aug 2012
Posts: 464
Concentration: Marketing, Finance
GMAT 1: Q V0
GPA: 3.23
Followers: 20

Kudos [?]: 321 [0], given: 11

Re: If m=−2, what is [#permalink]  19 Dec 2012, 23:30
Amateur wrote:
If m=−2, what is −m^−m?
−16
−4
−1/4
1/4
4

$$=-(-2)^{-(-2)}=-(-2)^2=-4$$

_________________

Impossible is nothing to God.

Math Expert
Joined: 02 Sep 2009
Posts: 31288
Followers: 5354

Kudos [?]: 62287 [0], given: 9445

Re: If m=−2, what is [#permalink]  20 Dec 2012, 02:11
Expert's post
Amateur wrote:
I thought this to be a poor quality question because they did not mention either - m^-m or (-m)^-m..... i took it for the second one and flipped the sign... Am I being wrong in understanding GMAT presentation?

If it were $$(-m)^{-m}$$ it would be written as $$(-m)^{-m}$$ not as $$-m^{-m}$$.
_________________
SVP
Status: The Best Or Nothing
Joined: 27 Dec 2012
Posts: 1854
Location: India
Concentration: General Management, Technology
WE: Information Technology (Computer Software)
Followers: 31

Kudos [?]: 1356 [0], given: 193

Re: If m=−2, what is −m^−m? [#permalink]  25 Mar 2014, 00:52
m = -2 so -m = 2

$$- (-2)^2$$

_________________

Kindly press "+1 Kudos" to appreciate

Re: If m=−2, what is −m^−m?   [#permalink] 25 Mar 2014, 00:52
Similar topics Replies Last post
Similar
Topics:
38 If m^2 < 225 and n - m = -10, what is the sum f the smallest 12 24 Jun 2014, 05:47
4 If m^(-1) = -1/3 then m^(-2) is equal to 3 20 Dec 2012, 06:23
If m and n are positive integers and m^2 + n^2 = 40, what is 3 01 Nov 2012, 06:56
33 If y=−m^2, which of the following must be true? 17 01 Jun 2012, 00:55
8 If m is a positive integer and m^2 is divisible by 48, then 18 10 Oct 2011, 11:42
Display posts from previous: Sort by