階乘

jiē chéng

n. factorial

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jie1 cheng2

the factorial of a number, e.g. 5! = 5.4.3.2.1 = 120

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階乘|阶乘 [jiē chéng] ► the factorial of a number, e.g. 5! = 5.4.3.2.1 = 120