1 votes 1 votes How many states will the pda for a^n b^n c^m d^m have?? I know it can be drawn using 5 states as given everywhere. But i think it can be drawn using 4 states also. can anyone tell?? sushmita asked Dec 19, 2016 sushmita 1.7k views answer comment Share Follow See all 16 Comments See all 16 16 Comments reply Show 13 previous comments Tauhin Gangwar commented Aug 15, 2020 reply Follow Share after 4 years u r asking..i am even not able to recognize my comments..what i have written...but wait i will see and tell. 0 votes 0 votes Tauhin Gangwar commented Aug 15, 2020 reply Follow Share this pda made by you is totally wrong .. 0 votes 0 votes sushmitagoswami commented Aug 16, 2020 reply Follow Share sir, i didn’t have made this pda. I think confusion arises since the me and person who has originally posted the questioni having same name!! I was wondering why the pda with 4 states will not work for n=0? 0 votes 0 votes Please log in or register to add a comment.