Question

a and b are two sets,then the condition that they are to be disjoint sets,is​

Answer 1

Step-by-step explanation:

A and B are two disjoint sets.

∴ A∩B=ϕ ⟹ n(A∩B)=0

Since, n(A∪B)=n(A)+n(B)−n(A∩B)

=n(A)+n(B)−0=n(A)+n(B)

Hence, n(A∪B)=n(A)+n(B)

Answer 2

Two sets A and B are disjoint sets if the intersection of two sets is a null set or an empty set. In other words, the intersection of a set is empty