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Let L1={anbnn>0} and L2={cnn>0}. Which of the following strings is in L1L2 ? ab aabbc aaabbcc Let L1={w{0,1}w contains an even number of 0 's } and L2={w{0,1}w contains no 1 's }. Which of the following strings is in L2L1? 00 000 0001 Consider the set of strings S={,ab, abab, ababab }. Which of the following languages contains all strings in S ? L={anbnn0} L={xyx{a} and y{b}} L={aab} L={w{a,b}w contains the substring ab } Let L={ab, aa, baa }. Which of the following strings is not in L ? abaaaab aaaabaa baaaaab