(A U B) U C = A U (B U C ) , the property used here is
Commutative
Associative
Law of identity
Idempotent law
Find the odd one.
Set of all factors of 1200
Set of all multiplies of 3 which is less than 99.
Set of perfect square number which is less than 121.
Set of all natural numbers greater than 1000.
If n(X) = 15 , n(XUY) = 40 and n(X ∩ Y) = 5 ,then n(y) = ________ .
55
25
60
30
Which of the following is a subset of every set?
empty set
set of natural numbers
set of rational numbers
set of whole numbers
If A = {1, 2, 3} and B = {1, 3, 5, 7}, then A U B =
{1, 3, 5, 7}
{1, 2, 3, 5, 7}
{1, 2, 3, 7}
None of these
In a class of 30 girls , 25 girls study French, 10 German and 5 neither of the two.How many girls study both ?
15
5
10
120
Which of the following statement is true?
Which of the following is an empty set?
{0}
{ }
{Ø}
0
Two sets A and B are disjoint if
A U B = Ø
A U B = B
A ∩ B = A
A ∩ B = Ø
If P = { 1, 2, 3, 4, 5} and Q = {4, 5, 6, 7} then P - Q is
{1, 2, 3, 4, 6, 7}
{1, 2, 3, -6, -7}
{1, 2, 3}
{4, 5}
