Question: a.) Given the alphabet, = {c d}, give the regular expression that defines the language consisting of all strings in which the letter d is

a.) Given the alphabet, = {c d}, give the regular expression that defines the language consisting of all strings in which the letter d is never quadrupled. This means no word contains the substring dddd.

b.)Given the alphabet, = {c d}, build an FA that accepts only those words that begin or end with a triple letter.

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