Is this relation symmetric?
The relation in a set of people, "is brother of"
aRb , bRa
The Attempt at a Solution
The answer is not symmetric. They gave example says that
paul may be the bother of Anne but Anne is not the brother of paul
I thought that if A is brother of B then automatically B is brother of A isnt it?
I think the reason why i can not understand this is problem of English.
In my country brother indicates both older and younger, is it different in other country?