The language {aᵐbⁿcᵐ⁺ⁿ | m, n ≥ 1} is:

2020

Answer: C. context free but not regular

1. A.

   regular

2. B.

   type 0 but not context sensitive

3. C.

   context free but not regular

4. D.

   context sensitive but not context free

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Correct answer: C