aRb' if a is the father of b. then R is _____

Let S = Set of all women in the world. Define R as follows: a,b in S, aRb if a is mother of b. Then R is

Consider the non-empty set consisting of children in a family and a relation R defined as aRb , if a is brother of b . Then, R is

Consider the non-empty set consisting of children in a family and a relation R defined as aRb , if a is brother of b . Then, R is

Consider the non-empty set consisting of children in a family and a relation R defined as aRb, if a is brother of b. Then , R is ........

In 'aRb' a and b have the same teacher', then R is______

Let S denote set of all integers. Define a relation R on S 'aRb if ab ge 0 where a, b in S . Then R is :

Let A={2,3,4,5} and B={1,3,4}. If R is the relation from A to B given by aRb iff a is a divisor of b. Writt R as a set of ordered pairs.