1
GATE CSE 2007
MCQ (Single Correct Answer)
+2
-0.6
Consider the grammar with non-terminals N = { S, C, S1 }, terminals T = { a, b, i, t, e }, with S as the start symbol, and the following set of rules:
$$\eqalign{ & S \to iCtS{S_1}\,|\,\,a \cr & {S_1} \to eS\,|\,\,\varepsilon \cr & C \to b \cr} $$The grammar is NOT LL(1) because:
2
GATE CSE 2007
MCQ (Single Correct Answer)
+2
-0.6
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:
$$\eqalign{ & S \to bA\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,S \to aB \cr & A \to a\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,B \to b \cr & A \to aS\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,B \to bS \cr & S \to bAA\,\,\,\,\,\,\,\,\,\,\,B \to aBB \cr} $$Which of the following strings is generated by the grammar?
3
GATE CSE 2007
MCQ (Single Correct Answer)
+2
-0.6
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:
$$\eqalign{ & S \to bA\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,S \to aB \cr & A \to a\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,B \to b \cr & A \to aS\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,B \to bS \cr & S \to bAA\,\,\,\,\,\,\,\,\,\,\,B \to aBB \cr} $$For the correct answer strings to the previous question, how many derivation trees are there?
4
GATE CSE 2006
MCQ (Single Correct Answer)
+2
-0.6
Which one of the following grammars generates the following language?
$$L = \left( {{a^i}{b^j}|i \ne j} \right)$$Questions Asked from Parsing (Marks 2)
Number in Brackets after Paper Indicates No. of Questions
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