Question: 3. (5 pts) Determine whether the grammar implicitly defined by the following rules is ambiguous. Prove your answer. S AB A QA A aba A

3. (5 pts) Determine whether the grammar implicitly defined by the

3. (5 pts) Determine whether the grammar implicitly defined by the following rules is ambiguous. Prove your answer. S AB A QA A aba A E B + bB B abB. BE 4. (5 pts) Give pushdown automata that recognize the following languages. (a) A = {w {0, 1}* | w contains at least three 1s }

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