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# Discrete Mathematics Questions and Answers – Sets

This section focuses on "Sets" in Discrete Mathematics. These Multiple Choice Questions (mcq) should be practiced to improve the Discrete Mathematics skills required for various interviews (campus interviews, walk-in interviews, company interviews), placements, entrance exams and other competitive examinations.

1. Who introduced the concept of sets?

A. Babylonians
B. G. Cantor
C. Pythagoreans

2. Set theory forms the basis of several other fields of study like?

A. counting theory
B. relations
C. finite state machines
D. All of the above

3. A set is an _________ collection of different elements.

A. unordered
B. ordered
C. unordered and ordered
D. None of the above

4. A set can be written explicitly by listing its elements using?

A. ()
B. []
C. {}
D. " "

5. In how many ways, sets can be represented?

A. 2
B. 3
C. 4
D. 5

6. A={a,e,i,o,u} is an example of?

A. Roster Form
B. Set Builder Notation
C. Both A and B
D. None of the above

7. What Z+ represents?

A. the set of all rational numbers
B. the set of all positive integers
C. the set of all whole numbers
D. the set of all real numbers

8. A set which contains a definite number of elements is called?

A. Proper Subset
B. Universal Set
C. Finite Set
D. Unit Set

9. Which of the following give the count of the number of ways to partition a set?

A. Power Numbers
B. Cross Numbers
C. Complement Numbers
D. Bell Numbers

10. The power set of an empty set is?

A. 0
B. 1
C. 2
D. empty set