For sigma = {a, b}. construct dfas that accepts the sets consisting of all the strings with exactly two a's and more than two b's; {ab^n a^m: n greaterthanorequalto 2, m greaterthanorequalto 3}; {w: (n_a(w) + 2n_b(w)) mod 3 < 2}.

Alex’s family members live in different parts of the world. they would like to discuss the wedding plans of one of their distant relatives. however, alex wants all the family members to talk to each other simultaneously so that they can make decisions quickly. which mode of internet communication should they use? a. blog b. email c. wiki d. message board e. instant messaging