21. Which is the set, whose membership only can be true or false, in bi-values Boolean logic?
A. Boolean set
B. Crisp set
C. Null set
D. None of the mentioned
22. If Z is a set of elements with a generic element z, i.e. Z = {z}, then this set is called _____________
A. Universe set
B. Universe of discourse
C. Derived set
D. None of the mentioned
23. A fuzzy set ‘A’ in Z is characterized by a ____________ that associates with an element of Z, a real number in the interval [0, 1].
A. Grade of membership
B. Generic element
C. Membership function
D. None of the mentioned
24. A fuzzy set is ________ if and only if the membership function is identically zero in Z.
A. Empty
B. Subset
C. Complement
D. None of the mentioned
25. Which of the following is a type of Membership function?
A. Triangular
B. Trapezoidal
C. Sigma
D. All of the mentioned
26. Which of the following is not a type of Membership function?
A. S-shape
B. Bell shape
C. Truncated Gaussian
D. None of the mentioned