ICSE Board Practice

Class VI Class VII Class VIII Class IX Class X
ICSE Grade VI - Sets
Question 1
1.
If A = {-4,-7,5,-1,-6} and μ = {-4,-7,5,-1,-6,-2,9,3}, find A ∩ A
  • {-4,-1,-6,-7,5}
  • {5,-6,4,-1,-7,2,-4}
  • {-5,5,-8,-1,0}
  • {-7,-6,-1,5}
  • {-6,-4,-7,1,5}
Question 2
2.
If A = {3,9,2} and B = {7,9,8} , then B ∩ A =
  • {7,9}
  • {9}
  • {9,2}
  • {9,12}
  • {3,8,9}
Question 3
3.
If A = {8,5,-2} and μ = {8,5,-2,7,-1}, find A ∩ μ
  • {8,5,-2}
  • {5,11,1}
  • {8,5}
  • {13,-2,5}
  • {5,8,0,-2,-1}
Question 4
4.
If A = {7,4,8,1,3} and B = {14,6,12,2,11} , then A ∪ B =
  • {2,11,12,3,4,6,7,14,1,18,8}
  • {6,20,12,14,3,4,11,7,2,1}
  • {1,6,14,12,11,4,7,8,3}
  • {6,11,14,3,12,4,2,1,8}
  • {2,12,4,11,1,3,6,7,8,14}
Question 5
5.
What is the cardinality of an empty set?
  • 2
  • 8
  • 0
  • 6
  • 4
Question 6
6.
If A = {4,1,3} and B = {0,1,2} , then B ∪ A =
  • {10,2,4,0,1}
  • {1,9,4,2,0,3}
  • {2,4,0,1,3}
  • {0,1,2,3}
  • {0,4,1,3}
Question 7
7.
Which of the following elements does not belong to the set {x,q,a,b,g}
  • p
  • a
  • b
  • q
  • x
Question 8
8.
Which of the following is 'intersection' symbol?
  • ⊃
  • ⊂
  • ⊅
  • ∈
  • ∩
Question 9
9.
Which of the following are true?
a)
A ∪ ∅ = ∅
b)
A ∩ ∅ = A
c)
A ∪ ∅ = A
d)
A ∪ A = A
e)
A ∪ A = ∅
  • {b,d,c}
  • {b,d}
  • {c,d}
  • {a,c}
  • {e,a,c}
Question 10
10.
If A = {-4,-8,-7,-5,5,-2,8,1}, then n(A) = ?
  • 8
  • 7
  • 6
  • 11
  • 9