For two sets A & B,A∪B implies a set having elements either in set A or in set $B.\)
The operation in which the elements that are either in set A or in set B or in both set A and set B is called ____.
Let A and B be two sets. Show that the sets A×B and B×A have an element in common if the sets A and B have an element in common.
Let A and B be two sets show that the set A×B and B×A an element in common IFF the sets A and B have an element in common.