Question

In how many ways can b blue balls and r red balls be distributed in n distinct boxes? [(n+b-1)!(n+r-1)!]/[(n-1)!B!(n-1)!R!] b [(n+(b+r)-1)!]/[(n-1)!(n-1)!(b+r)!] c n!/(b!R!) [(n+(b+r)-1)!]/[n!(b+r-1)!]

Answer 1

1QertIPopuyrtooitdfhfggfdawgbvzcjjtfskgdiysitydittuulkskyspuulflhxcnv bmgibkfydldigdouf