2’s complement representation of a 16-bit number (one sign bit and 15 magnitude bits) is FFFI. Its magnitude in decimal representation is

Boolean expression for the output of XNOR (equivalence) logic gate with inputs A and B is

For the logic circuit shown in Figure, the output is equal to

The truth table for the output Y in terms of three inputs A, B and C are given in table. Draw a logic circuit realization using only NOR gates.