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If n and k are positive integers, is n/k an even integer?

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Intern
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Joined: 21 Aug 2011
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If n and k are positive integers, is n/k an even integer? [#permalink] New post 23 Aug 2011, 23:52
00:00
A
B
C
D
E

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  25% (low)

Question Stats:

60% (01:49) correct 40% (00:16) wrong based on 40 sessions
If n and k are positive integers, is n/k an even integer?

(1)n is divisible by 8
(2)k is divisible by 4
[Reveal] Spoiler: OA
Manager
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Joined: 19 Jul 2011
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Concentration: Finance, Economics
Schools: Duke '15
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Re: A diffcult Math problem [#permalink] New post 24 Aug 2011, 02:43
The answer is E as n/k can be a fraction.
eg.
8*2=16
4*8=32
16/32=0.5
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Joined: 16 May 2011
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Re: A diffcult Math problem [#permalink] New post 24 Aug 2011, 03:13
we have to find n/q:

S1-nothing about k
S2- nothing about n.

combined: n=8a and k=4b so

n/k= 8a/4b= 2a/b so n/k= 2a/b if a and b are 2 and 2 the answer is yes=2*2/2=2 (n/k is even) but if a and b are 3 and 2 then 2*3/2=3 (the answer is no. 3 is odd)
Re: A diffcult Math problem   [#permalink] 24 Aug 2011, 03:13
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If n and k are positive integers, is n/k an even integer?

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