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Which of the choices is not a string of this grammar. {{A,B},{a.b},B,{B->bA,B->aA,A->bA,A->a}} 1) abbbbba 2) bba 3) abb 4) abbbba 5) aba

Which of the choices is not a string of this grammar. {{A,B},{a.b},B,{B->bA,B->aA,A->bA,A->a}}

1) abbbbba

2) bba

3) abb

4) abbbba

5) aba

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