0 votes 0 votes consider 5 numbered balls and 5 numbered boxes , how many ways are possible such that exactly 2 balls is not on the ith spot ? [Ball i is in the ith box ] hitendra singh asked Oct 27, 2018 hitendra singh 839 views answer comment Share Follow See all 12 Comments See all 12 12 Comments reply Show 9 previous comments Utkarsh Joshi commented Oct 27, 2018 reply Follow Share 10 is correct,isn't it? 0 votes 0 votes Vikas Verma commented Oct 27, 2018 reply Follow Share Yeah even I think it should be 10. Put all balls in their respective boxes. Select any 2 boxes and swap their balls. 0 votes 0 votes hitendra singh commented Oct 27, 2018 reply Follow Share yeah i think so thanks! 0 votes 0 votes Please log in or register to add a comment.
