The number of non - empty subsets of the set {1,2,3,4} is
15
14
16
17
In an interview 525 persons like to see Tamil films, 400 persons like to see Hindi films and 200 like to both, Then the number of persons interviewed is
700
725
600
925
Let A and B be subsets of a set X. Then
A - B = A∪B
A - B = A∩B
A - B = Ac ∩ B
A - B = A∩Bc
Given n(U) = 20, n(A) = 12, n(B) = 9 , n(A∩B) = 4 , where U is the universal set, A and B are subsets of U then n[(A∪B)c] =
9
11
3
If f(x) = 1/x and g(x) = -1/x then fog =
-x
1/x
-1/x
x
Set of all even prime numbers is
Single ton set
Null set
A subset of all negative integers
Infinite set
If x and y are two sets such that n (x) = 17, n(y) = 23 and n ( XUY) = 38. find n (X∩Y).
1
2
4
If f:Z→Z be defined by f(x) = -x, then f is
in to function
One - one and on to function
Many to one function
Identity function
If the sets A and B are defined as A = {(x,y): y = ex , x∈R} B = { (x,y): y = x, x∈R} then
B⊆A
A⊆B
A∩B = ∅
A∪B = A
Let U = { 1, 2, 3,4, 5, 6, 7, 8, 9, 10}. A = {2, 4, 6, 8} and B = { 3, 4, 5, 6}Find ( A∪B)'.
{ 1, 3, 5, 7, 9, 10}
{1, 2, 9, 10}
{7, 9, 10}
{1, 7, 9, 10}
