Let S = { 0, 1, 5, 4, 7 }. Then the total number of subsets of S is_____.
64
32
40
20
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 }
What is the probability of getting a sum 9 from two throws of a dice?
1/6
1/8
1/9
1/12
Which of the following represent the empty set?
{ }
0
{ 0 }
None of these
The number of outcomes when a dice and and a coin are thrown is _______.
2
4
6
12
If A = { a, b, c, d }, then A ∩ ∅ = ?
{ a, b, c, d }
∅
{ a, b, c, d, 0 }
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 }
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 }
The statement of the form " If ... then... " is called ______.
conjunction
disjunction
negation
implication
If U = { 1, 2, 3, 4, 5, 6, 7, 8 }, A = { 1, 2, 3, 4 }, B = { 2, 4, 5, 7 } and C = { 2, 4, 6, 8 }. Then (A∩B)′ ?
{ 1, 3 }
{ 2, 4 }
{ 1, 3, 5, 6, 7 }
{ 1, 3, 5, 6, 7, 8 }