Find a CFG for the language with all words that start with a letter "a" or...

Question

Question

Find a CFG for the language with all words that start with a letter "a" or are of the form aⁿb²ⁿ, n = 1, 2, 3, ...

a) S-> aS | aSbb | null

b) It is impossible to build such a CFG.

c) S-> aS | abbS | null

d) None of the above is correct.

e) S-> aX; X->aX | bX | null

Answer 1

Answer #1

Answer: d) None of the above is correct.
explanation:
correct CFG is
S-> aSbb | abb

Answer 2

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