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Q.
Which of the following are context free?

A = {anbnambm | m, n>=0}
B = {ambnambn | m, n>=0}
C = {ambn | m?2n,m, n>=0}

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Consider the CFG with {S,A,B) as the non-terminal alphabet, {a,b) as the terminal alphabet, S as the start symbol and the following set of production rules

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B --> b         A --> a
B --> bS        A --> aS
B --> aBB       A --> bAA
Which of the following strings is generated by the grammar?
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Which among the following cannot be accepted by a regular grammar ?
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the reverse of the string w. Which of these languages are deterministic Context-free languages?
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