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GATE | GATE CS 1996 | Question 9
Which of the following statements is false?
(A)
The Halting Problem of Turing machines is undecidable
(B)
Determining whether a context-free grammar is ambiguous is undecidable
(C)
Given two arbitrary context-free grammars G1 and G2 it is undecidable whether L(G1)=L(G2)
(D)
Given two regular grammars G1 and G2 it is undecidable whether L(G1)=L(G2)
Answer
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