binomial - nodef/extra-bigint GitHub Wiki
Find the number of ways to choose k elements from a set of n elements.
Similar: factorial, binomial, multinomial.
function binomial(n, k)
// n: elements in source set
// k: elements in choose set
const xbigint = require('extra-bigint');
xbigint.binomial(4n, 1n);
// → 4n
xbigint.binomial(4n, 2n);
// → 6n
xbigint.binomial(4n, 3n);
// → 4n