Question: (i) Let S = {ab bb} and let T = {ab bb bbbb}. Show that S* = T*. (ii) Let S = {ab bb} and

(i) Let S = {ab bb} and let T = {ab bb bbbb}. Show that S* = T*.
(ii) Let S = {ab bb} and let T = {ab bb bbb}. Show that S* ≠ T* , but that S* ⊂ T*.
(iii) What principle does this illustrate?

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