109. In the combination of the following gates the output Y can be written in terms of inputs A and B as ?

 

109. In the combination of the following gates the output Y can be written in terms of inputs A and B as ?

(a) \( \overline{A \cdot B} \)

(b) \( A \cdot \overline{B} + \overline{A} \cdot B \)

(c) \( \overline{A + B} \)

(d) \( \overline{A \cdot B} + A \cdot B \)

Answer :  (b) \( A \cdot \overline{B} + \overline{A} \cdot B \)