Let and be the two sets such that , , .Then is equal to
Determine .
The union of two sets and is the set of all elements which are either in or in .It is denoted by .
.
The intersection of two sets and is the set of all elements common to both and .It is denoted by .
The cardinality of set operations is given by:
Therefore, substituting the given values of , and , we have
Hence, option (C) is the correct answer.