ICSE Board Practice

Class VI Class VII Class VIII Class IX Class X
ICSE Grade VI - Sets
Question 1
1.
Which of the following is 'union' symbol?
  • ∪
  • ∈
  • ⊅
  • ↔
  • ⊄
Question 2
2.
If μ = {-1,9,-2,4,5,-8,6,-3,-6,-7,1}, A = {-1,9,-2,4} and B = {5,-8,6,-3}, find n(A ∩ B)
  • 1
  • (-3)
  • 3
  • (-1)
  • 0
Question 3
3.
Which of the following symbols represent the set of Integers ?
  • Q
  • Z
  • W
  • N
  • Q'
Question 4
4.
If A = {-2,7,-8} and μ = {-2,7,-8,-5,-7}, find A ∪ ∅
  • {-4,-8,7}
  • {-8,1,7}
  • {1,7,4,-2,-8}
  • {-8,-2,7}
  • {-2,7}
Question 5
5.
Which of the following are disjoint sets?
      • {12,10,13,9,17,4}
      • ,
      • {}
      • {12,10,13,9,17,4}
      • ,
      • {12,10,13,9,17,4}
      • {12,10,13,9,17,4}
      • ,
      • {2,1,18,20,8,4}
      • {12,10,13,9,17}
      • ,
      • {2,1,18,20,8}
      • {}
      • ,
      • {12,10,13,9,17,4}
Question 6
6.
If A = {5,0,8,7} and B = {4,6,5,7} , then A ∪ B =
  • {7,5,14,0,4,6}
  • {8,7,0,6,4,5}
  • {}
  • {14,4,7,6,5,0,8}
  • {7,0,4,8,6}
Question 7
7.
If A = {7,5,4,13,0} and B = {7,11,9,2,14} , then A ∪ B =
  • {11,0,4,14,9,2,5,7,13}
  • {5,11,0,2,7,13,14,4}
  • {11,4,2,9,13,14,0,5}
  • {11,0,19,5,9,7,13,2,4,14}
  • {0,2,4,16,9,11,13,14,7}
Question 8
8.
Which of the following symbols represent the set of Whole numbers ?
  • Q'
  • Q
  • W
  • N
  • R
Question 9
9.
Which of the following are null sets?
a)
{5,8,4}
b)
{}
c)
{∅}
d)
∅
e)
{empty}
  • {b,d}
  • {e,a,b}
  • {c,d,b}
  • {c,d}
  • {a,b}
Question 10
10.
Which of the following is an infinite set?
  • {0,1,2,3,4,5,6,...}
  • {}
  • {1}
  • {4,8,-7}
  • {2,-9}