(C) Give two strings that can be and two that cannot be generated from (bta)*6* U (ab+)* U (ab+)*a, if I = {a,b}. Describe the language of this regular expression. [6] co (d) What is the minimum number of cards one must pick out of a standard deck of cards to guarantee at least 5 cards are from the same suit? [3] (e) Use mathematical induction to prove that for all natural numbers n > 0, 4"