The set of all strings over ∑ ={a,b} in which a single a is followed by any number of b’s a single b followed by any number of a’s is?(a) ab* + ba*(b) ab*ba*(c) a*b + b*a(d) None of the mentioned

The set of all strings over ∑ ={a,b} in which a single a is followed

1.	The set of all strings over ∑ ={a,b} in which a single a is followed by any number of b’s a single b followed by any number of a’s is?(a) ab* + ba(b) abba(c) ab + b*a(d) None of the mentioned
Answer» Right option is (a) ab* + ba* Easiest explanation: ab+ba is the expression in which a single a is followed by any number of b’s a single b followed by any number of a’s.

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The set of all strings over ∑ ={a,b} in which a single a is followed by any number of b’s a single b followed by any number of a’s is?(a) ab* + ba*(b) ab*ba*(c) a*b + b*a(d) None of the mentioned

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The set of all strings over ∑ ={a,b} in which a single a is followed by any number of b’s a single b followed by any number of a’s is?(a) ab* + ba(b) abba(c) ab + b*a(d) None of the mentioned