Expression for Y (A, B, C) in figure, where A, B and C are

Expression for Y (A, B, C) in figure, where A, B and C are Boolean variables is—

The given circuit
From above circuit, we get
Y = A B. 1 + AB.C + A B.0 + AB. 0
or
Y = A B + ABC
or
Y = A (B + BC) = A (B+C) = AB + AC