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
If A = { 1, 3, 7 }, B = { 2, 4, 7 }, then A∪B =
{ 1, 2, 3, 4 }
{ 1, 3, 7, 4, 7 }
{ 1, 2, 3, 4, 7 }
{ 1, 2, 4 }
What is the probability of getting a sum 9 from two throws of a dice?
1/6
1/8
1/9
1/12
A combination of one or more simple statements with a connective is called a
sentence
conjunction
compound statement
disjunction
The statement of the form " If ... then... " is called
negation
implication
If U = { 1, 2, 3, 4, 5, 6, 7, 8 }, A = { 1, 2, 3, 4 }. Find A′ ?
{ 2, 4, 5, 7 }
{ 2, 4, 6, 8 }
{ 5, 6, 7, 8 }
{ 1, 3, 4, 6, 7 }
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
The number of outcomes when a dice and and a coin are thrown is
2
4
12
A set which contains no element is called
infinite set
empty set
equal set
equivalent set
Let S = { 0, 1, 5, 4, 7 }. Then the total number of subsets of S is
64
32
40
20
