Are x, y, z odd integers? 1) x+y+z is odd 2) x*y*z is a : DS Archive
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# Are x, y, z odd integers? 1) x+y+z is odd 2) x*y*z is a

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Are x, y, z odd integers? 1) x+y+z is odd 2) x*y*z is a [#permalink]

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18 Jan 2007, 07:39
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Are x, y, z odd integers?
1) x+y+z is odd
2) x*y*z is a multiple of 4
Senior Manager
Joined: 19 Jul 2006
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18 Jan 2007, 09:33
1) x+y+z is odd

say x+y+z = 9 (odd)

1+3+5 = 9
2+3+4 = 9

insufficient

2) x*y*z is a multiple of 4

x*y*z = 4k => atleast one number is even

sufficient

Ans=B
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18 Jan 2007, 13:25
(B) as well... Same approach as AK's one
18 Jan 2007, 13:25
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