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单词 subfactorial
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subfactorial


subfactorial

(ˌsʌbfækˈtɔːrɪəl) n (Mathematics) maths the number of ways a group of objects can be arranged so that none of the objects are in their original or correct place

subfactorial


subfactorial

[‚səb‚fak′tȯr·ē·əl] (mathematics) For an integer n, the number that is expressed as n !{(½!) - (⅓!) + (¼!) - ⋯ + [(-1) n / n !]}.
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更新时间:2024/12/23 1:44:46