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If x and y are intergers, is xy even? 1) x=y+1 2)x/y is an

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Current Student
Joined: 21 Oct 2009
Posts: 41
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Kudos [?]: 5 [0], given: 4

If x and y are intergers, is xy even? 1) x=y+1 2)x/y is an [#permalink]

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28 Oct 2009, 07:53
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If x and y are intergers, is xy even?

1) x=y+1
2)x/y is an even integer
[Reveal] Spoiler:
OA is D

I wonder if zero is considered integer in GMAT?
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Joined: 08 Oct 2009
Posts: 71
Location: Denmark, Europe
Schools: Darden Class of 2012
Followers: 2

Kudos [?]: 23 [0], given: 6

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28 Oct 2009, 11:03
yuskay wrote:
If x and y are intergers, is xy even?

1) x=y+1
2)x/y is an even integer
[Reveal] Spoiler:
OA is D

I wonder if zero is considered integer in GMAT?

0 is considered an even integer. Therefore the answer is D.

Ad statement 1: xy=(y+1)*y. y=0 yields xy=0 which is even. Furthermore since either y or y+1 will always be even and (even)*(odd)=(even) this statement is sufficient.

Ad statement 2: x/y is even. This can only be the case if at least one of them are even => sufficient
Re: Is Zero integer?   [#permalink] 28 Oct 2009, 11:03
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