Re: ISI permutation and comb doubt

Posted by Tania123 on Apr 03, 2016; 7:28am
URL: http://discussion-forum.276.s1.nabble.com/ISI-permutation-and-comb-doubt-tp7584416p7599746.html

But isn't this the general method for calculating the number of ways n distinct objects can be divided into r groups such that each of them get atleast 1?