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GATE | GATE-CS-2014-(Set-3) | Question 45
Which of the following problems is undecidable?
(A)
Deciding if a given context-free grammar is ambiguous.
(B)
Deciding if a given string is generated by a given context-free grammar.
(C)
Deciding if the language generated by a given context-free grammar is empty.
(D)
Deciding if the language generated by a given context-free grammar is finite.
Answer
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