Question - What Is Difference Between Fa’s And Nfa’s. Are They Opposite To Each Other ?
Answer -
FA stands for finite automata while NFA stands for non-deterministic finite automata, In FA there must be a transition for each letter of the alphabet from each state. So in FA number of transitions must be equal to (number of states * number of letter in alphabet).
While in NFA there may be more than one transition for a letter from a state. And finally every FA is an NFA while every NFA may be an FA or not.