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# If x and y are positive integers, is x an even integer? (1)

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Manager
Joined: 12 Jul 2006
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If x and y are positive integers, is x an even integer? (1) [#permalink]

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09 Dec 2006, 20:30
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

If x and y are positive integers, is x an even integer?
(1) x(y+5) is an even integer
(2) 6*y^2+41y+25 is an even integer
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I think I can. I think I can. I think I can.

Last edited by wshaffer on 09 Dec 2006, 21:19, edited 1 time in total.

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Senior Manager
Joined: 23 May 2005
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Location: Sing/ HK

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09 Dec 2006, 20:54
info for statement (1) is incomplete... please amend

(2) is INSUFF though bec it does not tell you anything about x
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SVP
Joined: 05 Jul 2006
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10 Dec 2006, 01:45
If x and y are positive integers, is x an even integer?
(1) x(y+5) is an even integer
(2) 6*y^2+41y+25 is an even integer

from one

either x even and y anything or x odd and y odd too

from two

6y^2 is even

thus sure ( 41y+25) is even thus sure y is odd

both together

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Senior Manager
Joined: 01 Oct 2006
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10 Dec 2006, 05:36
1 insuff
2 insuff no info abt x
combining insuff

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Manager
Joined: 12 Jul 2006
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10 Dec 2006, 17:09
I see where I got mixed up here. OA is E.
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I think I can. I think I can. I think I can.

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10 Dec 2006, 17:09
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