[理工] 離散數學-計數問題
離散數學的計數問題部分
http://i.imgur.com/DWh1upl.jpg

請問a選項要怎麼找反例呢?
上課恍神了,不記得老師有沒有講到反例…
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※ 編輯: elmo07 (60.245.65.140), 11/20/2014 10:27:49
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