In the given network of AND and OR gates f can be written as
- A. X0 X1 X2 ... Xn + X1 X2 ... Xn + X2 X3 ... Xn + ... + Xn
- B. X0 X1 + X2 X3 + ... + Xn-1 Xn
- C. X0 + X1 + X2 + ... + Xn
- D. X0 X1 + X3 ... Xn-1 + X2 X3 + X5 ... Xn-1 + ... + Xn-2 Xn-1 + Xn
Explanation: Based on standard ISRO keys, none of the provided options accurately represent the specific network shown.