Ex2. For all sets and relations below , state and prove that the relation is:

a)1. Reflexive, 2) Symmetric, 3). Anti-Symmetric, 4). Transitiv

b). Drow the graph of each relation

- the set A={2,3,4,8,12,16}, and the relation R={(a,b)|a divides b}

- The set B={3,7,9,11} and the relation R{(a,b)|a<=b}

- the set X={1,2,3,4,5} and the relation R={(a,b)|1<=x<=3 & 2<=y<=4}