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If n and k are positive integers, is n divisible by 6? (1) n

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Director
Joined: 19 Nov 2004
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If n and k are positive integers, is n divisible by 6? (1) n [#permalink]

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02 Feb 2005, 22:37
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If n and k are positive integers, is n divisible by 6?
(1) n = k(k + 1)(k - 1)
(2) k â€“ 1 is a multiple of 3.

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Director
Joined: 25 Jan 2004
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02 Feb 2005, 23:18
Agree with MA

substiting positive integers 1,2,3 ... etc you will see A satisfies fine.

Good question. C is a trap
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Praveen

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Director
Joined: 07 Jun 2004
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03 Feb 2005, 06:43
since n and k are +ve either cannot result in 0 so answer = A

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VP
Joined: 18 Nov 2004
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03 Feb 2005, 09:28
"A"...

If k is odd, say k = 3....then u have n = 3x4X5...divisible
if k is even....k = 2....then n = 2x3x1 is divisible.

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SVP
Joined: 03 Jan 2005
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03 Feb 2005, 11:25
(I) every three numbers have at least an even number, and a number that is divisible by three. So sufficient
(II) This is a strange question. Totally irrelavent.

(A)

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Manager
Joined: 24 Jan 2005
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04 Feb 2005, 12:34
Since multiple of 6 ==> multiple of both 2 and 3 so A is suff

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A   [#permalink] 04 Feb 2005, 12:34
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