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 and B be any two sets, then (A∩B)' is equl to
A'∩B'
A' B'
A∩B
A B
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 is any set, then.
A A' = φ
A A' = U
A∩A' = U
None f these
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
10
45
If a set A has n elements, then the total number of subsets of A is.
n
n2
2n
A = {p,q,r,s} , B = {r,s,t.u}, then A / B is.
{p,q}
{t,u}
{r,s}
{p,q,r,s}
If A = {5,6,7}, B= {1,2,3,4,5} and f, A→B is defined by f(x) = x - 2, then the range of f is.
{1,4,5}
{1,2,3,4,5}
{2,3,4}
{3,4,5}
If f = {(6,3), (8,4), (5,3), (-1, 6)} then the pre-image of 3 are.
S and -1
6 and 8
8 and -1
6 and 5
Let A = {1,2,3,4}, then total number of subsets of A =
4
8
12
16
