1.

A regular grammar for the language L = {anbm | n is even and m is even} is given by

A. S?aSb | S1; S1 ? bS1a | ?
B. S?aaS | S1; S1 ? bSb | ?
C. S?aSb | S1; S1 ? S1ab | ?
D. S?aaS | S1; S1 ? bbS1 | ?
Answer» E.


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