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

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Manager
Joined: 06 Jun 2014
Posts: 92
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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25 Jul 2016, 19:10
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Difficulty:

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Question Stats:

75% (00:27) correct 25% (00:21) wrong based on 162 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.
[Reveal] Spoiler: OA

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1) Kaplanprep 450 Q27 V21
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3) GmatPrep 450 Q33, V19
4) Veritas 460 Q31, V23
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7) Gmat 420 Q27, V23
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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
Joined: 07 Jul 2016
Posts: 79
GPA: 4
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

[Reveal] Spoiler:
(D) each statement alone is sufficient

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Joined: 02 Dec 2014
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Location: Russian Federation
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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
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).

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

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