ICSE Board Practice

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ICSE Grade VI - Sets
Question 1
1.
Which of the following are overlapping sets?
      • {2,17,10,14,15}
      • ,
      • {1,10,9,12,14,15}
      • {2,17}
      • ,
      • {1,10,9,12,14,15}
      • {2,17,10,14,15}
      • ,
      • {}
      • {2,17}
      • ,
      • {1,9,12}
      • {2,17,10,14,15}
      • ,
      • {1,9,12}
Question 2
2.
Which of the following elements does not belong to the set {5,4,2,3,10}?
  • 1
  • 4
  • 3
  • 5
  • 2
Question 3
3.
If A = {-9,-4,9,-8} and μ = {-9,-4,9,-8,8,2,-7}, find A ∩ μ
  • {-7,-9,9,-4}
  • {-1,9,-9,4,-8,-4}
  • {-9,9,-4}
  • {-4,13,-9,-5}
  • {-8,-4,-9,9}
Question 4
4.
If μ = {8,-6,-5,-4,-3,-1,-7,3,2,9,5,-8,4,-9,6}, A = {8,-6,-5,-4,-3} and B = {-4,-1,-7,3,-6,-3,2}, find n(B)
  • 4
  • 7
  • 9
  • 6
  • 8
Question 5
5.
If A = {-5,9,-9,-6,2,0,4} and μ = {-5,9,-9,-6,2,0,4,-3,1,-4,-2}, find A ∪ μ
  • {2,-2,4,-7,9,-9,-3,-5,0,1,-4}
  • {-1,9,1,0,-9,-5,-2,-3,2,-4,-6,4,3}
  • {-3,0,9,-6,4,-2,-9,1,-5,-4}
  • {-4,-2,-6,0,-3,-5,4,2,1,9,-9}
  • {-3,-4,2,9,-5,-6,3,-9,0,1,-1}
Question 6
6.
Which of the following is an empty set?
  • {}
  • {∅}
  • {0}
  • {empty}
  • {o}
Question 7
7.
Which of the following is 'does not belongs to' symbol?
  • ∪
  • ⊇
  • ↔
  • ⊃
  • ∉
Question 8
8.
Which of the following are true?
a)
A ∪ ∅ = ∅
b)
A ∪ A = A
c)
A ∪ A = ∅
d)
A ∪ ∅ = A
e)
A ∩ ∅ = A
  • {a,b}
  • {c,d,b}
  • {b,d}
  • {e,a,b}
  • {c,d}
Question 9
9.
Which of the following is a null set?
  • {empty}
  • {∅}
  • {o}
  • {0}
  • ∅
Question 10
10.
If A = {1,6,7,2,0,8,-8} and μ = {1,6,7,2,0,8,-8,-5,-1,9,4}, find A ∪ A
  • {2,8,5,0,-8,-1,1,7,6}
  • {0,7,1,-8,2,8}
  • {9,6,1,5,2,-8,7}
  • {-8,1,6,8,0,2,7}
  • {}