柒月黑瞳dae32020-03-10👍317 回答: “P” is for “permutation”. A permutation is an ordered sequence of elements selected from a given finite set, without repetitions, and not necessarily using all elements of the given set. P(n, r) = n!/(n-r)!. “C” is for “combination”. A combination is an un-ordered collection of distinct elements, usually of a prescribed size and taken from a given set. C(n, r) = n!/[r!(n-r)!].
二、概率的英语单词怎么写
szsolomonkang2020-03-05👍82 你好! 概率 probability 英[ˌprɒbəˈbɪləti] 美[ˌprɑ:bəˈbɪləti] n. 可能性; 几率,概率; 或然性; [例句]Without a transfusion, the victim’s probability of dying was 100% 如果不输血,患者必死无疑。
骗精算了4352021-05-21👍46 小概率事件 [词典] small probability event; [例句]小概率事件在日常生活中有着很广泛的应用。 The small probability event has a wide range of applications in daily life.