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

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Joined: 05 Jul 2006
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Is a two-digit number XY even? (1) LCM of X and Y is even [#permalink]  12 Oct 2006, 15:39
Is a two-digit number XY even?

(1) LCM of X and Y is even
(2) X is even
Senior Manager
Joined: 31 Jul 2006
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Kudos [?]: 14 [0], given: 0

Re: PROPERTIES OF INTIGERS [#permalink]  12 Oct 2006, 17:16
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, 17:16
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