My answer is ...

回答: Quant 麵試題:高興指數(2星)康MM2010-11-10 06:22:54

(2n-1)/2

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Explanation..... -Commentate- 給 Commentate 發送悄悄話 (315 bytes) () 11/11/2010 postreply 10:01:53

回複:Explanation..... -wushuihe- 給 wushuihe 發送悄悄話 (68 bytes) () 11/11/2010 postreply 17:50:48

how about n=1?....n is right -jinjing- 給 jinjing 發送悄悄話 (0 bytes) () 11/11/2010 postreply 16:03:20

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