Define a set X of strings in the symbols 0 and 1 as follows. B. 0...

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Define a set X of strings in the symbols 0 and 1 as follows. B. 0 and 1 are in X. R. If x and y are in X, so is xxyy. R2. If x and y are in X, so is xyx. Explain why the string 01001011 EX using the definition. Build up the string step by step, and justify each step by referring to the appropriate part of the definition. B. O is in B. 1 is in R2. If 0 and 1 are in X, so is R1. If 010 and 1 are in X, so is Define a set X of strings in the symbols 0 and 1 as follows. B. 0 and 1 are in X. R. If x and y are in X, so is xxyy. R2. If x and y are in X, so is xyx. Explain why the string 01001011 EX using the definition. Build up the string step by step, and justify each step by referring to the appropriate part of the definition. B. O is in B. 1 is in R2. If 0 and 1 are in X, so is R1. If 010 and 1 are in X, so is