Permutation and Combination!N things taken atmost r times is (n^r+1-1)/n-1 which is 1+n+n^2....till n^n.But why do we add 1?~Confused
Permutation and Combination!
N things taken atmost r times is (n^r+1-1)/n-1 which is 1+n+n^2....till n^n.
But why do we add 1?
~Confused
RON , 10 Years ago
Grade
