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FORMAL LANGUAGE & AUTOMATA THEORYWhich of the following is a PDA? (i) Finite automaton with a stack (ii) Turing machine with a stack (iii) Finite automaton with a queue (iv) Turing machine with a queue20242mFormal Language & Automata TheoryA language accepted by deterministic pushdown automata is closed under which of the following? (i) Complement (ii) Union (iii) Both (i) and (ii) (iv) None of the above20202mFormal Language & Automata TheoryConsider the following finite state automaton:  The language accepted by this automaton is given by the regular expression (i) b^*ab^*ab^*ab (ii) (a+b)^* (iii) b^*a(a+b)^* (iv) b^*ab^*ab20192mFormal Language & Automata TheoryConsider the regular expression (0+1)(0+1)\dots N \text{ times}. The minimum state FA that recognizes the language represented by this regular expression contains (i) n states (ii) (n+1) states (iii) (n+2) states (iv) None of the above20192m
PreviousNFA has 'non-deterministic' in its name because: (i) The result is undetermined (ii) The choice of path is nondeterministic (iii) The next state is nondeterministic (iv) All of the mentionedNextA DFA can have: (i) Multiple start states (ii) Multiple accepting states (iii) Transitions on \varepsilon (iv) None of the above