if n(A) = 10, n(B) = 6, n(A∩B) = 4, then n(A∪B) = ?
16
20
10
12
Number of outcomes when n coins are tossed is
n2
2n
n
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)
If A = { a, b, c, d }, then A ∩ ∅ = ?
{ a, b, c, d }
∅
{ a, b, c, d, 0 }
0
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 }
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 }
The statement which uses the connective OR is called a
conjunction
disjunction
negation
implication
Which of the following represent the empty set?
{ }
{ 0 }
None of these
The statement of the form " If ... then... " is called
A set which contains no element is called
infinite set
empty set
equal set
equivalent set