If P∪Q = {5, 11, 14, 17, 19, 20}, P∩Q = {14} and p = {5, 11, 14, 17}, then Q
{17, 19, 20}
{14, 19, 17, 20}
{5, 14, 17, 19, 20}
{14,1 9, 20}
If P (A) = P (B), then
AB
BA
A = B
A = AUB
If A = { 1, 2, 3, 4, 5}. Then n [P(A)] =
4
8
16
32
If f(x) = 1/x+1 g(x) = -x then gof is
-x + 1
-1/x+1
-(x + 1)
x2 - 1
There are 200 individuals with a skin disorder, 120 have been exposed to chemical C1, 50 to chemical c2 and 30 to both the chemicals C1 and C2. Find the number of individuals exposed to chemical C1 but not chemical C2.
140
20
90
100
Sets A and B have 3 and 6 elements respectively. What can be the minimum number of elements in A∪B ?
3
6
9
18
If f(x) = 1/x and g(x) = x2 then fog is
x2
1/x2
1/x
x
In an interview 525 persons like to see Tamil films, 400 persons like to see Hindi films and 200 like both, then the number of persons interviewed is
700
725
600
925
A and B are sets such that A - B = A, we can say that
A is a subset of B
B is a subset of A
A and B are disjoint sets
A∪B = A
If A = [1, 2}, B = {1, 2, 3, 4} then
A and B are equal sets
None of these
