推 jokslin:你會上場這麼久嗎.....140.113.138.110 03/11
推 Henmen:教室只有n個位子嗎?? 140.114.221.85 03/11
※ 編輯: tony90981 來自: 218.174.165.12 (03/11 09:18)
A group of n students is assigned seats for each of two
classes in the same classroom How many ways can these
seats be assigned if no student is assigned the same seat
for both classes ?
ps 誰會阿 解一下 離散數學
最近在準備4月中旬期中考 和準備班際盃 要打40分鐘 不知道我會不會斷氣
期中考前 會陪韶涵拍第二部電影 簡稱探班 爽!!!!
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喜歡韶涵超活潑的樣子!!!
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