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# What is the value of the positive integer m?

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Intern
Joined: 27 Feb 2012
Posts: 37
What is the value of the positive integer m? [#permalink]

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28 Nov 2012, 22:22
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5% (low)

Question Stats:

73% (01:29) correct 27% (00:35) wrong based on 75 sessions

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What is the value of the positive integer m?

(1) m^2 = 2m

(2) m is even
[Reveal] Spoiler: OA
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Joined: 02 Jul 2012
Posts: 1223
Location: India
Concentration: Strategy
GMAT 1: 740 Q49 V42
GPA: 3.8
WE: Engineering (Energy and Utilities)
Re: What is the value of the positive integer m? [#permalink]

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28 Nov 2012, 23:05
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1) m can be 0 or 2. But m is given as a positive integer. So m=2. Sufficient.

2)m can be any positive even number. Insufficient.

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Re: What is the value of the positive integer m? [#permalink]

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29 Nov 2012, 02:56
What is the value of the positive integer m?

(1) m^2 = 2m --> m^2-2m=0 --> m(m-2)=0 --> m=0 or m=2. Since given that m is positive, then m cannot be zero, thus m=2. Sufficient.

(2) m is even --> clearly insufficient, m can be any positive even number.

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Re: What is the value of the positive integer m?   [#permalink] 29 Nov 2012, 02:56
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