SET OBJECTIVE QUESTIONS

DISCRETE STRUCTURES
SET

1. A ____ is an ordered collection of objects.

a.  Relation

b.  Function

c.  Set

d.  Proposition

2. The set O of odd positive integers less than 10 can be expressed by

a.  {1,2,3}

b.  {1,3,5,7,9}

c.  {1,3,5,9}

d.  {1,3,5,7,9,11}

3.  What is the Cartesian Product of A = {1,2} and B = {a, b}?

a.  {(1, a), (1, b), (2, a), (b, b)}

b.  {(1, 1), (2, 2), (a, a), (b, b)}

c.  {(1, a), (1, b), (2, a), (2, b)}

d.  {(1, 1), (a, a), (2, 2), (b, b)}

4.  Which of the following two sets are equal?

a.  A = {1,2} and B = {1}

b.  A = {1,2} and B = {1,2,3}

c.  A = {1,2,3} and B = {2,1,3}

d.  A = {1,2,4} and B = {1,2,3}

5.  What is the Cardinality of the Power set of the set {0,1,2}?

a.  8

b.  6

c.  7

d.  9

6.  The union of the sets {1,2,5} and {1,2,6} is the set _______.

a.  {1,2,6,1}

b.  {1,2,5,6}

c.  {1,2,1,2}

d.  {1,5,6,3}

7.  The intersection of the sets {1,2,5} and {1,2,6} is the set ______.

a.  {1,2}

b.  {5,6}

c.  {2,5}

d.  {1,6}

8.  Two sets are called disjoint if there ________ is the empty set.

a.  Union

b.  Difference

c.  Intersection

d.  Complement

9.  The difference of {1,2,3} and {1,2,5} is the set ______.

a.  {1}

b.  {5}

c.  {3}

d.  {2}

10.  The complement of the set A is _______.

a.  A – B

b.  U – A

c.  A – U

d.  B – A

11. vThe Shaded area of figure is best described by?

a.   A’ (Complement of A)

b.  A U B -B

c.  A ∩ B

d.  B

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

a. 20

b. 30 

c.  40 

d.  10

13.  Let the set A is {1,2,3} and B is {2,3,4}. Then number of elements in A B is?

a.  1

b.  2

c.  3

d.  4

14.  The cardinality of the set A = {1,2,3,4,6} is?

a.  5

6

Integer

None of the mentioned

Which of the following is subset of set {1,2,3,4}?

{1,2}

{1,2,3}

{1}

All of the mentioned 

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