The smallest set A such that A∪{1,2} = {1,2,3,5,9} is
{2,3,5}
{3,5,9}
{1,2,5,9}
none of these
For any two sets A and B, then A ∩ ( AUB)' =
Φ
A
B
A'
The number of proper subsets of the set {1,2,3} is
8
7
6
5
In a survey, 30 people use tooth paste A, 25 use toothpaste B and 5 use both. Then the total number of people is
45
50
55
40
A - (B∪C) =
(A - B) - (A - C)
(A - B) ∪ (A - C)
(A - B) ∩ (A - C)
(A - B) - (A ∩ C)
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
Write the set B = { 2, 4, 8, 16, 32} in the set - builder form.
{ x: x = 2n; n N and 1 ≤ n ≤ 5 }
{x : x = 2n ; n N and 1 ≤ n ≤ 5 }
{x: x = n + 2; n N and 1 ≤ n ≤ 5}
{ x : x = n - 2 ; n N and 1 ≤ n ≤ 5}
If f(x) = 3x and g(x) = 3/x then gof is
x
x/3
3/x
1/x
If f(x) = 2x - 3 g(x) = x + 1 then fog is
2x - 2
2x + 2
2x - 1
2x + 1
The domain of the function f = {(1,2)(2,3)(3,4)(4,5)} is
{1,2,3,4}
{2,3,4,5}
{1,2,3,5}
{1,3,5}
