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p.2-89 範例 4
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Hsin Yeh
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Nov 19, 2017, 11:49:44 AM
11/19/17
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to 黃子嘉 - 線代離散研究室
不太懂為何可能的 sum 的個數可以用「 77 - 2 + 1 」去算
這不是應該要 2 ~ 77 中每個整數都存在,才可以這樣算個數嗎? (尾減頭+1)
但此例中,有些位置是空的,如 4、6
求解謝謝
楊皓宇
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Jun 25, 2020, 10:08:54 AM
6/25/20
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to 黃子嘉 - 線代離散研究室
+1想知道
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