Permutation
lastmod 2018-08-17created 2014-06-122 edits
A permutation (順列) is the number of ways to choose r (n ≥ r) out of n distinct elements and arrange them in a row.
lastmod 2018-08-17created 2014-06-122 edits
A permutation (順列) is the number of ways to choose r (n ≥ r) out of n distinct elements and arrange them in a row.