Question: please explain :) thanks! 1. Let L = L;(LUL2)L3 be a language, where L1 = {ab:n> 1}, L2 = L(b*a*), and L3 = {aa, aaa}.

please explain :) thanks! 1. Let L = L;(LUL2)L3 be a

please explain :) thanks!

1. Let L = L;(LUL2)L3 be a language, where L1 = {ab":n> 1}, L2 = L(b*a*), and L3 = {aa, aaa}. The number of strings of length at most 3 in L is ...? (a) 3 (b) 4 (c) 5 (d) 6 2. Let L = {ab, aab, aba}. Which of the following strings is NOT in L* - L?? (a) (b) ab (c) ba (d) aba

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