Statistic 函数
PHP Manual

stats_stat_binomial_coef

(PECL stats >= 1.0.0)

stats_stat_binomial_coefReturns a binomial coefficient

说明

float stats_stat_binomial_coef ( int $x , int $n )

Returns the binomial coefficient of n choose x.

参数

x

The number of chooses from the set

n

The number of elements in the set

返回值

Returns the binomial coefficient


Statistic 函数
PHP Manual