Q=who make it has no use of it,who buys it is not using it and the one who use it cannot feel he/she is using it.what is that thing?
Q=brothers and sisters i have none but this mans father is my fathers son.who can say to whom?
A=a father to his son
Q=if a electric train is running north than in which direction will the smoke go?
A=nor,because they are electric train
hope this helped you,so please mark as best......