Last visit was: 10 Jul 2025, 13:16 It is currently 10 Jul 2025, 13:16
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
User avatar
msand
Joined: 27 Dec 2009
Last visit: 27 Nov 2011
Posts: 104
Own Kudos:
901
 [20]
Given Kudos: 3
Posts: 104
Kudos: 901
 [20]
3
Kudos
Add Kudos
17
Bookmarks
Bookmark this Post
Most Helpful Reply
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: -
Posts: 102,624
Own Kudos:
Given Kudos: 98,170
Products:
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 102,624
Kudos: 740,167
 [15]
7
Kudos
Add Kudos
8
Bookmarks
Bookmark this Post
General Discussion
User avatar
ludwigfraboulet
Joined: 17 Dec 2009
Last visit: 21 Dec 2014
Posts: 23
Own Kudos:
Given Kudos: 4
Posts: 23
Kudos: 43
Kudos
Add Kudos
Bookmarks
Bookmark this Post
User avatar
tuhinkanti
Joined: 23 Nov 2009
Last visit: 05 Mar 2010
Posts: 19
Own Kudos:
Given Kudos: 1
Posts: 19
Kudos: 30
Kudos
Add Kudos
Bookmarks
Bookmark this Post
An even power can never be negative. Therefore statement B is sufficient.
avatar
rboots
Joined: 25 Dec 2011
Last visit: 16 Apr 2013
Posts: 31
Own Kudos:
GMAT 1: 710 Q42 V44
GPA: 3.84
WE:Marketing (Energy)
GMAT 1: 710 Q42 V44
Posts: 31
Kudos: 10
Kudos
Add Kudos
Bookmarks
Bookmark this Post
Without looking at the answer...

1) k + 3 > 0 ...This simply means k > -2, but this doesn't indicate a specific value. #1 alone is insufficient.
2) k^4 <= 0 ...This indicates that k^4 is less than or equal to 0. It's impossible for any real number with an even exponent to result in a negative value, so k = 0. #2 alone is sufficient.

Answer: B
User avatar
shinbhu
Joined: 29 Jul 2011
Last visit: 14 Oct 2013
Posts: 51
Own Kudos:
Given Kudos: 6
Location: United States
Posts: 51
Kudos: 171
Kudos
Add Kudos
Bookmarks
Bookmark this Post
1. k+3>0 -> k>-3. Clearly insuff.
2. K^4 <= 0. Any even root is always positive, so < 0 is not possible. Only true if k=0. Suff.

B.
avatar
sisorayi01
Joined: 01 Feb 2015
Last visit: 02 Dec 2019
Posts: 7
Own Kudos:
Given Kudos: 17
Posts: 7
Kudos: 1
Kudos
Add Kudos
Bookmarks
Bookmark this Post
im confused with this question. Why would:

1) The question state something that is in fact FALSE (k^4<0, k^4=0). Aren't the statements supposed to be "true" in order to determine the answer? I have a hard time understanding why they would "present" false information to solve the problem.. i just havent really seen this before.

2) The question asks, what is the value of k? Not, what is the value of k^2. K can be -2, -1, 0, 1, 2.

Thanks!
User avatar
Bunuel
User avatar
Math Expert
Joined: 02 Sep 2009
Last visit: -
Posts: 102,624
Own Kudos:
Given Kudos: 98,170
Products:
Expert
Expert reply
Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
Posts: 102,624
Kudos: 740,167
Kudos
Add Kudos
Bookmarks
Bookmark this Post
sisorayi01
im confused with this question. Why would:

1) The question state something that is in fact FALSE (k^4<0, k^4=0). Aren't the statements supposed to be "true" in order to determine the answer? I have a hard time understanding why they would "present" false information to solve the problem.. i just havent really seen this before.

2) The question asks, what is the value of k? Not, what is the value of k^2. K can be -2, -1, 0, 1, 2.

Thanks!

Statements cannot be false. On the GMAT, two data sufficiency statements always provide TRUE information and these statements NEVER contradict each other or the stem.

The second statement says that \(k^4\leq{0}\), not k^4 < 0. Which means that k = 0. Please re-read my solution above.
User avatar
stonecold
Joined: 12 Aug 2015
Last visit: 09 Apr 2024
Posts: 2,248
Own Kudos:
Given Kudos: 893
GRE 1: Q169 V154
GRE 1: Q169 V154
Posts: 2,248
Kudos: 3,464
Kudos
Add Kudos
Bookmarks
Bookmark this Post
X^even = always positive so k=0 and statement 2 is sufficient
hence A
User avatar
LogicGuru1
Joined: 04 Jun 2016
Last visit: 28 May 2024
Posts: 469
Own Kudos:
Given Kudos: 36
GMAT 1: 750 Q49 V43
GMAT 1: 750 Q49 V43
Posts: 469
Kudos: 2,533
Kudos
Add Kudos
Bookmarks
Bookmark this Post
msand
What is the value of the integer k?

(1) k + 3 > 0
(2) k^4 <= 0

What is the value of the integer k?

(1) k + 3 > 0
k > -3
k can anything from -3 to positive infinity; k ={-3,-2,-1,0,1,2,3,4,5,....99...13456.... infinity}
INSUFFICIENT

(2) \(k^4\) \(<= 0\)
Raising any number to an even power removes the possibility of getting a negative number in the output.
so the expression become \(k^4=0\)
therefore k is also 0
SUFFICIENT

ANSWER IS B
User avatar
bumpbot
User avatar
Non-Human User
Joined: 09 Sep 2013
Last visit: 04 Jan 2021
Posts: 37,378
Own Kudos:
Posts: 37,378
Kudos: 1,010
Kudos
Add Kudos
Bookmarks
Bookmark this Post
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.
Moderator:
Math Expert
102624 posts