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 }
If A = { a, b, c, d }, then A ∩ ∅ = ?
{ a, b, c, d }
∅
{ a, b, c, d, 0 }
0
The negation of the statement "5 is a prime number" is__________.
5 is a composite number
5 is a prime number
5 is not a prime number
both (2) and (3)
The number of outcomes when a dice and and a coin are thrown is _______.
2
4
6
12
Number of outcomes when n coins are tossed is _______.
n2
2n
n
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 }
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 }
Let A = { factors of 36 } and B = { factors of 48 }, which of the following is true?
n(A∪B) = n(A) + n(B) - n(A∩B)
n(A∪B) = n(A) + n(B) + n(A∩B)
n(A∪B) = n(A) + n(B)
n(A∪B) = n(A∩B) - n(A) - n(B)
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 }
A combination of one or more simple statements with a connective is called a _____________.
sentence
conjunction
compound statement
disjunction
