if n(A) = 10, n(B) = 6, n(A∩B) = 4, then n(A∪B) = ?
16
20
10
12
The statement of the form " If ... then... " is called
conjunction
disjunction
negation
implication
Let S = { 0, 1, 5, 4, 7 }. Then the total number of subsets of S is
64
32
40
Let the Universal set be U = { x : x ∈ N, 10 ≤ x < 25 }. Write A = { x : x ≥ 20 }.
{ 1, 2, 3, 4, 5, 10, 15 }
{ 20, 21, 22, 23, 24 }
{ 10, 11, 12, 13, 14 }
{ 20 }
The number of outcomes when n dice are thrown?
6n
n6
The smallest set A such that A ∪ { 1, 2 } = { 1, 2, 3, 5, 9 } is
{ 3, 5, 9 }
{ 2, 3, 5 }
{ 1, 2, 5, 9 }
None of these
If a dice is thrown, the probability of getting an even number is
2
1/3
1/2
1/6
Set A and B have 3 and 6 elements respectively. What can be the minimum number of elements in A∪B?
3
6
9
18
Let A = { factors of 36 } and B = { factors of 48 } find A∩B?
{ 1, 5, 7, 11 }
{ 1, 2, 3 }
{ 1, 2, 3, 4, 5, 6, 12 }
{ 1, 2, 3, 4, 6, 12 }
Given that A = { 1, 9, 11, 15, 17 }, B = { 11, 17, 19, 21 } and C = { 3, 5, 7 }. Then (A∩B)∪C =
{ 11, 17 }
{ 3, 5, 7, 11, 15 }
{ 3, 5, 7, 11, 17 }
{ 3, 5, 7, 11, 17, 19 }
