factorial

柯林斯词典

factorial /fækˈtɔːrɪəl/

• 1. N the product of all the positive integers from one up to and including a given integer. Factorial zero is assigned the value of one: factorial four is 1 × 2 × 3 × 4. Symbol: n!, where n is the given integer 阶乘

• 2. ADJ of or involving factorials or factors 阶乘的

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