Let's say that we have a set
The cardinality of a set is the number of elements in the set. So, we just need to count the number of elements in the set
Step 1 :The intersection of these two sets would be the set of elements that are common to both sets, which is
Step 2 :The cardinality of a set is the number of elements in the set. So, we just need to count the number of elements in the set