If a set A has n elements, then the total number of subsets of A is.
n
n2
2n
Let A = {1,2,3,4}, then total number of subsets of A =
4
8
12
16
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
If A = {1,2,3,4}, B = {4,5,6,7}, then A∩B is
{1,2,3,4}
{6,7}
{1,2}
{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
If A = {1,2,3,4}, B = {4,5,6,7}, then A - B =
{1,2,3}
{5,6,7}
The set of intelligent students in a class is .
A null set
A singleton set
A finite set
Not a well defiend collection
If {(7,11), (5,a)} represents a constant function, then the value of 'a' is.
7
11
5
9
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 = {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}
