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
Two sets A and B are said to be _________ if n(A) = n(B).
Equal
Equivalent
Same
None
If A = {2,4,5}, B = {7,8,9}, then n(A × B) is equal to.
6
9
3
0
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 set A has n elements, then the total number of subsets of A is.
n
n2
2n
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
A = {p,q,r,s} , B = {r,s,t.u}, then A / B is.
{p,q}
{t,u}
{r,s}
{p,q,r,s}
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 = {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.
5
10
20
