The logic of pumping lemma is a good example of (i) pigeon-hole princi

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Module 1: Introduction, Regular languages and finite automata

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The logic of pumping lemma is a good example of
(i) pigeon-hole principle
(ii) divide-and-conquer technique
(iii) recursion
(iv) iteration

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PreviousWhich of the following pairs have DIFFERENT expressive powers? (i) Deterministic finite automata (DFA) and non-deterministic finite automata (NDFA) (ii) Deterministic push-down automata (DPDA) and non-deterministic push-down automata (NDPDA) (iii) Deterministic single-tape Turing machine and non-deterministic single-tape Turing machine (iv) Single-tape Turing machine and multi-tape Turing machine NextIf L1 and L2 are context free languages, L1 - L2 is ___________ context-free. (i) always (ii) sometimes (iii) never (iv) None of these

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