3. What is the cardinality of D= the set of days in a week?
A) 2
B) 5
C) 6
D) 7
4. Which of the following is not a subset to given set I = {2,3}?
A) { }
B) {0}
C) {2} D) {2,3}
5. How many subsets containing the given set L={a,b,c}?
A) 3
B) 4
C) 6
D) 8
6. Which of the following statements below is not correct?
A. 3 € {1,2,3,4,5}
B. 2 € { prime numbers}
C.6 € {odd numbes}
D. 4 € {even numbers)​