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If X and Y are positive integers , is y odd ? (1)

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Joined: 25 Dec 2010
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If X and Y are positive integers , is y odd ? (1) [#permalink] New post 02 Oct 2011, 14:02
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

33% (03:36) correct 66% (01:16) wrong based on 12 sessions
If X and Y are positive integers , is y odd ?

(1) (y+2)!/ x! is odd integer
(2) (y+2)!/ x! is greater than 2
[Reveal] Spoiler: OA

Last edited by shashankp27 on 04 Oct 2011, 10:53, edited 1 time in total.
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Kudos [?]: 828 [0], given: 376

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Re: is y odd ? [#permalink] New post 03 Oct 2011, 02:24
shashankp27 wrote:
If X and Y are positive integers , is y odd ?

(1) (y+2)!/ x! is odd integer
(2) (y+2)!/ x! is greater than 2


1)
x=4; y=2
x=3; y=1
Not Sufficient.

2)
x=1; y=1
x=1; y=2
Not Sufficient.

Combining both;
y = odd integer greater than 0;
x = y+1
Sufficient.

Ans: "C"
_________________

~fluke

Re: is y odd ?   [#permalink] 03 Oct 2011, 02:24
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If X and Y are positive integers , is y odd ? (1)

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