Question

Let A be the set of the children in a family and let R be the relation on A such that x is brother of y.
Then the relation R on A is

Answer 1

$r \: is \: daughter....... \\ \: a \: is \: brother...$

Answer 2

Step-by-step explanation:

x  is a brother of y, y  is also brother of x. So, it is symmetric. Clearly it is transitive.