A={1,3,5,7,9},B={x,x2,x3}, finite elements, 123 5 3 C={xx=y3,}, infinite elements A set S is called finite set if it has n distinct elements, where nEN. In this case, n is called the cardinality of S and is denoted by. A set that is not finite is called infinite set. 2,2, C,D,S are infinite sets, A, are finite sets. P={ is an prime number less than 63, 2,3,5, P=3A={1, 3, 5, 7, 9},B={x1 ,x2 ,x3 }, finite elements, 5 3 C={x|x=y3 ,yZ+ }, infinite elements A set S is called finite set if it has n distinct elements, where nN. In this case, n is called the cardinality of S and is denoted by |S|. A set that is not finite is called infinite set. Σ* ,Σ+ ,C,D,S are infinite sets, A,B are finite sets. P={x|x is an prime number less than 6}, 2,3,5, |P|=3