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If x and y are positive integers and m25 q1

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CIO
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If x and y are positive integers and m25 q1 [#permalink]

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New post 15 Feb 2012, 06:48
If \(x\) and \(y\) are positive integers and \(\frac{x}{y}\) is an even integer, which of the following cannot be an odd integer?

A. \(y\)
B. \(x + y\)
C. \(y - 1\)
D. \(xy\)
E. \(y^2\)

m25 q13
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Kudos [?]: 970 [0], given: 334

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Re: X/Y is an even integer (m25#13) [#permalink]

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New post 27 Mar 2012, 03:47
If \(x\) and \(y\) are positive integers and \(\frac{x}{y}\) is an even integer, which of the following cannot be an odd integer?

A. \(y\)
B. \(x + y\)
C. \(y - 1\)
D. \(xy\)
E. \(y^2\)

Given: \(\frac{x}{y}=even\) --> \(x=y*even\), since \(y\) is an integer then \(x=even\), hence \(xy\) (option D) is always even.

Answer: D.

To discard options A, B and E consider \(x=6\) and \(y=3\), and to discard option C, consider \(x=4\) and \(y=2\).
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iF X AND Y are positive Integers...? [#permalink]

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New post 20 May 2013, 14:26
If x and y are positive integers and xy is an even integer, which of the following cannot be an odd integer?
A. y
B. x+y
C. y−1
D. xy
E. 2y

got lost here

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Re: iF X AND Y are positive Integers...? [#permalink]

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New post 20 May 2013, 14:32
madzstar wrote:
If x and y are positive integers and xy is an even integer, which of the following cannot be an odd integer?
A. y
B. x+y
C. y−1
D. xy
E. 2y

got lost here


I am a lil lost over the choices mentioned here as well. The question clearly mentions xy is even, but since x and y are positive integers, 2y will be even as well for obvious reasons. Please check the source, since the choices show some redundancy,

Regards,
Arpan
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Re: iF X AND Y are positive Integers...? [#permalink]

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New post 20 May 2013, 14:58

Kudos [?]: 124181 [0], given: 12075

Re: iF X AND Y are positive Integers...?   [#permalink] 20 May 2013, 14:58
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