Discrete Mathematics is the study of Discrete objects. Here you can online practice Discrete Mathematics using this quiz. Test your maths knowledge with selective and important questions of Discrete Math.

**Question 1. Which of the following is a subset of set {1, 2, 3, 4}?**

(A) {1, 2, 3}

(B) {1}

(C) {1, 2}

(D) All of the mentioned

**Question 2. Which among the following can be taken as the discrete object?**

(A) Rational numbers

(B) People

(C) Integers

(D) All of the mentioned

**Question 3. Which of the following function is also referred to as an injective function?**

(A) Onto

(B) One-to-One

(C) Many-to-one

(D) None of the mentioned

**Question 4. What is Floor function?**

(A) It maps the real number to the smallest following integer

(B) It maps the real number to the smallest previous integer

(C) It maps the real number to the greatest previous integer

(D) None of the mentioned

**Question 5. Let the players who play cricket be 12, the ones who play football 10, those who play only cricket are 6, then the number of players who play only football are ____, assuming there is a total of 16 players.**

(A) 8

(B) 16

(C) 10

(D) 4

**Question 6. Mathematics can be broadly categorized into how many types?**

(A) 2 Types

(B) 3 Types

(C) 4 Types

(D) 5 Types

**Question 7. Convert the set x in roster form if set x contains the positive prime number, which divides 72.**

(A) {2, 3}

(B) {3, 5, 7}

(C) {2, 3, 7}

(D) {∅}

**Question 8. How many injections are defined from set A to set B if set A has 4 elements and set B has 5 elements?**

(A) 64

(B) 24

(C) 120

(D) 144

**Question 9. The cardinality of the Power set of the set {1, 5, 6} is____.**

(A) 6

(B) 5

(C) 8

(D) 10

**Question 10. Boolean algebra deals with how many values.**

(A) It deals with only three discrete values.

(B) It deals with only two discrete values

(C) It deals with only four discrete values.

(D) It deals with only five discrete values.

**Question 11. Power set of empty or Null set has exactly _________ subset**

(A) Zero

(B) One

(C) Two

(D) Three

**Question 12. The use of Boolean algebra is ____________.**

(A) in building the algebraic functions

(B) in circuit theory

(C) in designing the digital computers

(D) in building the algebraic functions

**Question 13. How many bytes are needed for encoding 2000 bits of data?**

(A) 4 Byte

(B) 2 Byte

(C) 5 Byte

(D) 8 Byte

**Question 14. Universal logic gate is__________.**

(A) NAND

(B) OR

(C) NOT

(D) AND

**Question 15. Which case does not exist in complexity theory?**

(A) Null case

(B) Best case

(C) Average case

(D) Worst Case

**Question 16. The intersection of the sets {1, 2, 8, 9, 10, 5} and {1, 2, 6, 10, 12, 15} is the set ______**

(A) {5, 6, 12, 15}

(B) {1, 6, 12, 9, 8}

(C) {1, 2, 10}

(D) {2, 5, 10, 9}

**Question 17. Which option is correct for representing an algorithm?**

(A) Flow charts

(B) Statements in the common language

(C) Pseudo codes

(D) All of them

**Question 18. In which year did Maurice Karnaughin introduce the Karnaugh map?**

(A) 1953

(B) 1952

(C) 1954

(D) 1956

**Question 19. The number of reflexive closure of the relation {(0,1), (1,1), (1,3), (2,1), (2,2), (3,0)} on the set {0, 1, 2, 3} is_____.**

(A) 8

(B) 36

(C) 2

(D) 6

**Question 20. If x is a set and the set contains the real number between 1 and 2, then the set is ____.**

(A) Finite set

(B) Infinite set

(C) Empty set

(D) None of the mentioned

**Question 21. Which option is the negation of the bits “1001011”?**

(A) 10110100

(B) 11011011

(C) 1100100

(D) 0110100

**Question 22. If n(A) = 20 and n(B) = 30 and n(A U B) = 40 then n(A ∩ B) is?**

(A) 10

(B) 40

(C) 20

(D) 30

**Question 23. Which of the following function is not a mathematics function?**

(A) one to many

(B) one to one

(C) many to one

(D) all of the mentioned

**Question 24. If a and b are two positive numbers that are less than one, then the maximum value of Floor(a+b) and Ceil(a+b) is?**

(A) Foor(a+b) is 1 and Ceil(a+b) is 0.

(B) Floor(a+b) is 1 and Ceil(a+b) is 2.

(C) Floor(a+b) is 0 and Ceil(a+b) is 1.

(D) Floor(a+b) is 2 and Ceil(a+b) is 1

**Question 25. How many elements in the Power set of set A= {{Φ}, {Φ, {Φ}}} ?**

(A) 2 elements

(B) 5 elements

(C) 4 elements

(D) 6 elements