Turing Machine: RE, REC and Undecidability GATE 2014 Question #9995 with Solution

GATE 2014 · session-3

Theory of ComputationTuring Machine: RE, REC and UndecidabilityeasyMCQ2 marks

Which one of the following problems is undecidable?

ADeciding if a given context-free grammar is ambiguous.BDeciding if a given string is generated by a given context-free grammar.CDeciding if the language generated by a given context-free grammar is empty.DDeciding if the language generated by a given context-free grammar is finite.

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