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The context free grammar is ambiguous if ______________

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The context free grammar is ambiguous if ______________

(a) The grammar contains non-terminals

(b) Produces more than one parse tree

(c) Production has two non-terminals side by side

(d) None of the mentioned

The question was asked by my college professor while I was bunking the class.

This question is from Lexical Analyser in division Finite Automata and Regular Expression of Compiler

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The correct choice is (b) Produces more than one parse tree

The explanation: Since more than one parse tree is generated hence one than option is available .Therefore it’s ambiguous.

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