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# What is the value of k^2 + k?

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Manager
Joined: 06 Jun 2014
Posts: 90
Location: United States
Concentration: Finance, General Management
GMAT 1: 450 Q27 V21
GPA: 3.47
What is the value of k^2 + k?  [#permalink]

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Updated on: 26 Jul 2016, 11:53
1
5
00:00

Difficulty:

15% (low)

Question Stats:

74% (00:43) correct 26% (00:42) wrong based on 214 sessions

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What is the value of k^2 + k?

(1) The value of k + 1 is 1.
(2) The value of k^2 is 0.

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Originally posted by zxcvbnmas on 25 Jul 2016, 19:10.
Last edited by zxcvbnmas on 26 Jul 2016, 11:53, edited 1 time in total.
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Joined: 29 Jun 2016
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Re: What is the value of k^2 + k?  [#permalink]

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26 Jul 2016, 09:29
k^2+k= k(k+1)
Statement 1:
k+1=1
not sufficient

Statement 2:
k^2=0
=> k=0

k(K+1) =0
sufficient
Manager
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Re: What is the value of k^2 + k?  [#permalink]

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26 Jul 2016, 09:41
zxcvbnmas wrote:
What is the value of k^2 + k?

This seems far too easy for GMAT.
We need to find the value of $$k$$.

(1) The value of $$k + 1$$ is $$1$$.
$$k = 0$$
Sufficient

(2) The value of $$k^2$$ is $$0$$.
$$k = \pm 0 = 0$$
Sufficient

(D) each statement alone is sufficient

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Re: What is the value of k^2 + k?  [#permalink]

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07 Aug 2016, 06:07
zxcvbnmas wrote:
What is the value of $$k^2$$ + k?

(1) The value of k + 1 is 1.
(2) The value of $$k^2$$ is 0.

The question asks what is the value of k(k+1)

Statement 1. k+1=1 hence k=0 and k(k+1)=0 sufficient
Statement 2. k^2 = 0 hence k=0 and k(k+1)=0 sufficient

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Re: What is the value of k^2 + k?  [#permalink]

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11 Feb 2018, 15:35
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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).

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Re: What is the value of k^2 + k? &nbs [#permalink] 11 Feb 2018, 15:35
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