作者查詢 / ntnnthree
作者 ntnnthree 在 PTT [ Math ] 看板的留言(推文), 共6則
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4F推: 7. 找x+2y=13整數解且加起來是奇數的 分別算每個方03/17 04:08
5F→: 法加起來 C(7,1)+C(9,5)+C(11,2)+C(13,1)03/17 04:09
6F推: 打錯了= = C(13,0)03/17 04:11
8F→: 對是奇數03/18 12:03
1F推: 想半天也只想到這種用數的 不知道有沒有更漂亮的解03/17 12:39
2F→: 法03/17 12:39
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