Q. Find simplified function F and implement that function using only NAND gates.
1. F(A,B,C) = (A+B) (A'+B+C') (A'+B'+C')
2. F (A,B,C) = A'B'C'+B'CD'+A'BCD'+AB'C'
3. F(X,Y,Z) = XYZ + X'Y + XY'Z' + X'Y'Z
4. F(W,X,Y,Z) = Em (0,1,5,7,9,11,13,14) + Ed (2,8,15)