define sets which is are equal equevalent, joint and disjoint?
1. Sets are equal if they contain exactly the same members or elements
{1,3,8,4} is equal to {8,1,4,3}
2. Sets are equivalent if they contain the same NUMBER of members
or elements but not necessarily the same members or elements.
(1,3,8,4} is equivalent to {7,8,5,1}
3. Sets are joint if they contain at least one element in common.
{1,3,8,4} and {3,9,1,7} are joint sets.
4. Sets are disjoint if they have no member or element in common.
(1,3,8,4} and (2,4,7,5} are disjoint sets.
Edwin
