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Is a two-digit number XY even? (1) LCM of X and Y is even

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SVP
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Is a two-digit number XY even? (1) LCM of X and Y is even [#permalink]

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New post 12 Oct 2006, 16:39
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Is a two-digit number XY even?

(1) LCM of X and Y is even
(2) X is even
Senior Manager
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Joined: 31 Jul 2006
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Re: PROPERTIES OF INTIGERS [#permalink]

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New post 12 Oct 2006, 18:16
yezz wrote:
Is a two-digit number XY even?

(1) LCM of X and Y is even
(2) X is even


1) XY can be 32 or 23 (LCM of 3 and 2 is 6 - even) INSUFF
2) 22 or 21

1 and 2) 23 or 24 (LCM is 6 or 4 - even in both cases and X is even) INSUFF

E. ?
Re: PROPERTIES OF INTIGERS   [#permalink] 12 Oct 2006, 18:16
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Is a two-digit number XY even? (1) LCM of X and Y is even

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