To get output of the following logic circuit as ' 0 ' (zero), the inputs A , B , C should NOT be, respectively,

Step-by-step solution

The circuit output is given by Y = (A + B)' C . For Y = 1 , both (A + B)' and C must be 1. A NOR output equals 1 only when both inputs are 0, requiring A = 0 and B = 0 . Combined with C = 1 , this gives the condition for Y = 1 . Verifying the options: only A = 0 , B = 0 , C = 1 yields Y = (0 + 0)' 1 = 1 1 = 1 . Therefore, the input that does not result in Y = 0 is option D .