Answer:
Brothers and sisters I have none but this man's father is my father's son. Who is the man?
Passed from father to son and shared between brothers, its importance is unquestioned though it is used more by others.
What occurs four times in every week, twice in every month, only once in a year but never in a day?
What word becomes shorter when you add two letters to it?
The profession of Jimi Hendrix and Eric Clapton
When is it bad luck to see a black cat?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?