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FormosaMBA 傷心咖啡店 • 查看主题 - pp-T1-DS176

pp-T1-DS176

版主: shpassion, Traver0818

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pp-T1-DS176

由 Huang Hsin-Yi » 2008-01-18 14:49

176.
If x and y are positive integers, is the product xy even?

(1) 5x - 4y is even.

(2) 6x + 7y is even.

ANS:C

我怎樣推都是D

Huang Hsin-Yi: 黃金會員; 帖子: 1038; 注册: 2007-08-17 00:41; 地址: Tainan

由 little8 » 2008-01-18 14:54

正確答案是D

little8: 中級會員; 帖子: 123; 注册: 2006-11-05 05:32

由 Huang Hsin-Yi » 2008-01-18 14:59

真的喔!!原來我的解答是錯的
真是感恩

Huang Hsin-Yi: 黃金會員; 帖子: 1038; 注册: 2007-08-17 00:41; 地址: Tainan

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