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CBSE Questions for Class 11 Commerce Applied Mathematics Set Theory Quiz 1 - MCQExams.com

Examine the following statements: 
{a,b} { b, a,  c]
  • True
  • False
If X and Y are any two non empty sets then what is (XY) equal to?
  • XY
  • XY
  • XY
  • XY
If A and B are non empty sets and A' and B' represents their compliments respectively then
  • AB=AB
  • AA=BB
  • AB=BA
  • AB=AB
If ξ={2,3,4,5,6,7,8,9,10,11}
A={3,5,7,9,11}
B={7,8,9,10,11}, then find (AB)
  • (AB)={2,4,6,7,8,9,10,11}
  • (AB)={2,4,6,7,8,9,11}
  • (AB)={2,4,6,7,9,10,11}
  • (AB)={2,4,6,8,9,10,11}
State True or False
AA=ϕ
  • True
  • False
The set of all those elements of A and B which are common to both is called
  • union of two sets
  • intersection of two sets
  • disjoint sets
  • none of these
Given K={B,A,N,T,I}. Then the number of subsets of K, that contain both A, N is
  • 8
  • 16
  • 24
  • 32
In an examination 70% students passed both in Mathematics and Physics 85% passed in Mathematics and 80% passed in Physics If 30 students have failed in both the subjects then the total number of students who appeared in the examination is equal to : 
  • 900
  • 600
  • 150
  • 100
If n(A)=65,n(B)=32 and n(AB)=14, then n(AΔB) equals
  • 65
  • 47
  • 97
  • 69
If n(A)=115, n(B)=326, n(AB)=47 then n(AB) is equal to
  • 373
  • 165
  • 370
  • None
If P is true and Q is false, then Bi-implication of p and q is
  • True
  • False
For any two sets A and B,A=B is equivalent to
  • AB=BA
  • AB=AB
  • AC=BC and AC=BC for any set C
  • AB=ϕ
set of irrational numbers is {8,π}

  • True
  • False
set of rational numbers is 
{6,534,4,35,38,0,45,1,123,3.01,8.47}

  • True
  • False
State true or false.
Given universal set= ={6,534,4,35,38,0,45,1,123,8,3.01,π,8.47} 
From the given set, the set of integers is {6,4,0,1}.
  • True
  • False
Let A = set of all cuboids and B = set of all cubes. Which of the following is true?
  • AB
  • BA
  • B=A
  • BA

Suppose A1,A2,...,A30 are thirty sets, each with five elements and B1,B2,...,B30 are n sets ecah with three elements. Let 30i=1Ai=nj=1Bj=S

If each element of S belongs to exactly ten of the Ais and exactly none of the Bjs then n=

  • 45
  • 35
  • 40
  • none of these
A ϕ=
  • ϕ
  • 2
  • A
  • 0

Let n be a fixed positive integer. Let a relation R defined on I (the set of all integers) as follows: aRb iff n/(ab), that is, iff ab is divisible by n, then, the relation R is

  • Reflexive only
  • Symmetric only
  • Transitive only
  • An equivalence relation
If X = (multiples of 2), Y = (multiples of 5), Z = (multiples of 10), then X(YZ) is equal to
  • multiples of 10
  • multiples of 5
  • multiples of 2
  • multiples of 7
In a locality two-thirds of the people have cable TV one-fifth have Dish TV and one-tenth have both What is the fraction of people having either cable TV or Dish TV?
274249_296d269d34fd4621b6d08326aa577e08.png
  • 23
  • 13
  • 45
  • 35
Let P= Set of all integral multiples of 3; Q= Set of integral multiples of 4; R= Set of all integral multiples of 6. Consider the following relations :
1 PQ=R
2. PR
3. R(PQ)
Which of the relations given above is/are correct ?
  • only 1
  • only 2
  • only 3
  • both 2 and 3
State true or false.
Given universal set= ={6,534,4,35,38,0,45,1,123,8,3.01,π,8.47} 
From the given set, find set of non-negative integers is {0,1}.
  • True
  • False
Given, universal set = {xϵZ : 6<x6}, N = {n : n is a non-negative number} and P = {x : x is a nonpositive number}. Find :P
  • {1,2,3,4,5,6} 
  •  {1,2,3,4,5,6} 
  • {0,1,2,3,4,5,6} 
  • {0,1,2,3,4,5,6} 
If Q={x:x=1y,where  y  N}, then find the correct one.
  • 0Q
  • 1Q
  • 2Q
  • 23Q
Which set is the subset of the set containing all the whole numbers?
  • {1,2,3,4,.......}
  • {1}
  • {0}
  • All of the above
Let A is a finite set such that n(A)=6 then  n[P(A)] is 
  • 32
  • 36
  • 63
  • 64
For any two sets A and B, if AB=ABA=B
  • True
  • False
In Question some relationship have been expressed through symbols as defined below :     (N-83)
     + - x ÷ = > <
     V Λ ( ) U  0
    In question only one of the five relationship is correct Find the correct one and encircle its serial number on the space provided against the question ______________.
  • 24 3 ( 4 V 2 ) 8
  • 24 U 3 V 4 Λ 2 ) 8
  • 24 ( 3 0 4 ) 2 V 8
  • 24 0 3 ( 4 Λ 2 V 8
  • 24 Λ 3 V 4 U 2 ( 8
Set A has 3 elements and set B has 6 elements. What can be the minimum number of elements in AB?
  • 6
  • 3
  • 9
  • 18
0:0:1


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Practice Class 11 Commerce Applied Mathematics Quiz Questions and Answers