Computer Sciences > GATE 2014 SET-3 > Undecidability
Which one 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.

Correct : a

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