# 9. Mark the best description (smallest language class) for each of the following lang  R…

9. Mark the best description (smallest language class) for each of the following lang  R if it is regular  C if it is context free, but not regular . N if it is “bigger than” context free You do not have to prove your answer. L = {www: we {a,b}”} L2 = {a” : n > 2, m < 5} L3 = {a"m : n + m is even } LA = {w:na(w) + no(w) = n(w)} Ls = {a" m:n sms 4n} L = {a"b"C": n 2 0} 4 _ _ _ __ 10. Consider the following CFG, with these 5 productions: S - Sb aSSSSa SaS b (a) Show the CFG is ambiguous by giving two leftmost derivations of the string abbb Label the steps using the production numbers 1-5. (b) Show the CFG is ambiguous by giving two different derivation trees for the string babb.

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