Given the language L = {ab, aa, baa}, which of the following strings are in L*?

1) abaabaaabaa
2) aaaabaaaa
3) baaaaabaaaab
4) baaaaabaa 

(A) 1, 2 and 3
(B) 2, 3 and 4
(C) 1, 2 and 4
(D) 1, 3 and 4


Answer: (C)

Explanation: See question 2 of http://www.geeksforgeeks.org/automata-theory-set-2/

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