If A = {1,2,3,4,5} and B = {2,3,6,7} then the number of elements in the set (A×B) ∩ (B × A) is equal to.
4
5
10
20
Given A = {1,2,3}, B = {3,4}, C = {4,5,6}, then A U (B∩C) is.
{3}
(1,2,3,4}
{1,2,4,5}
{1,2,3,4,5,6}
In a class of 100 students, 55 students have passed in mathematics and 67 students have passed in Physics, then
the number of students who have passed in Physics only is.
22
33
45
Two sets A and B are said to be _________ if n(A) = n(B).
Equal
Equivalent
Same
None
If A and B be any two sets, then (A∩B)' is equl to
A'∩B'
A' B'
A∩B
A B
If A = {1,2,3,4}, B = {4,5,6,7}, then A - B =
{1,2,3}
{5,6,7}
{4}
{1,2,3,4}
If A = {1,2,3} and B = z{1,3,5,7} then A B.
{1,3,5,7}
{1,2,3,5,7}
{1,2,3,7}
None of these
For any two sets P and Q, P∩Q is.
{x:x P or x Q}
{ x;xPand xQ}
{x:xP and x Q}
x:x P and x Q}
If A = {2,4,5}, B = {7,8,9}, then n(A × B) is equal to.
6
9
3
0
If A and B are disjoint, then n (AB) is equal to.
n(A)
n(B)
n(A) + n (B)
n (A). n(B)
