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pp-T1-DS159

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pp-T1-DS159

由 Huang Hsin-Yi » 2008-01-18 14:28

159.
If n is a positive integer and r is the remainder when (n - 1)(n + 1) is divided by 24, what is the value of r ?

(1) n is not divisible by 2.

(2) n is not divisible by 3.

Ans:C

該如何思考

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 14:59

http://www.formosamba.com/phpBB3/viewtopi ... 28n%2B1%29

之前的討論,請多利用"搜尋"功能喔~

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

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