Question

if  A ={5,10,15,20} and {2,4,6,8} find A -B and B-A

Answer 1

A-B={5,10,15,20}
we are subtracting the set A from B i.e. all the elements of B should not be included
B-A={2,4,6,8}
we are subtracting B from A i.e. all the elements of A should not be included

*if the two sets contain any common element then it should be eliminated

Answer 2

If A ={5,10,15,20} and {2,4,6,8} then A-B={5,10,15,20},B-A={2,4,6,8}