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Formal Language & Automata TheoryExplain the concept of Universal Turing Machine. How does it help in proving undecidability?20257mFORMAL LANGUAGE & AUTOMATA THEORYA language L is Turing decidable if: (i) recursive (ii) TM recognizes L (iii) TM accepts L (iv) None of the above20222mFORMAL LANGUAGE & AUTOMATA THEORYA recursively enumerable language L is recursive if: (i) L' is recursively enumerable (ii) every sequence of moves of T halts (iii) Both (i) and (ii) (iv) None of the above20222mFormal Language & Automata TheoryThe Halting Problem is (i) Decidable (ii) Undecidable (iii) Context-Free (iv) Regular20252m