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FORMAL LANGUAGE & AUTOMATA THEORYWhich of the following statements is/are false? A. For every nondeterministic TM, an equivalent deterministic TM exists. B. Turing recognizable languages are closed under union and complementation. C. Turing decidable languages are closed under intersection and complementation. D. Turing recognizable languages are closed under union and intersection. (i) A and D only (ii) A and C only (iii) B only (iv) C only20212mFormal 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 above20202mDiscrete MathematicsWhich of the following statements regarding sets is false? (i) A \cap A = A (ii) A \cup A = A (iii) A - (B \cap C) = (A - B) \cup (A - C) (iv) (A \cup B)' = A' \cup B'20222mFORMAL 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 above20232m
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