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15 questions
Let A = {3, 6, 9, 12, 15} and B = {4, 8, 12, 16}. Which of the following is true about the two sets?
A∩B={3, 4, 6, 8, 9, 12, 15, 16}
A−B={3, 6, 9, 15}
A−B={4, 8, 16}
The set S = {fever, dry cough, tiredness} list the common symptoms of COVID-19. What is the cardinality of this set?
3
4
5
6
What is the cardinality of ϕ ?
0
1
Empty set
None
If T = {different types of triangles} and Q = {different type of quadrilaterals}, then which of the following is the most suitable for Universal set?
U = {x | x is a plane figure}
U = { x | x is a shape}
U = { x | x is a polygon}
U = { x | x is a figure}
Let K be the set of the letters in the sentence 'Keep safe'. How do you write this set correctly using the Roster Method?
K = {k, e, e, p, s, a, f, e}
K = {k, e, p, s, e, f}
K = {k, e, e, p, s, a, f}
K = {k, e, p, s, a, f}
Which of the following cannot be considered a subset of H = {h, e, a, l, t, h, y}?
W = {h, e, a, l, t, h, y}
M = { }
F = {h, e, a, t}
R = {h, e, a, r, t}
Which of the following is not an element of the set V = { 3x | x is a counting number from 3 to 9 }
3
9
15
21
What is the cardinality of the set W = {0, 1, 2, 3,...100}?
5
6
100
101
How many subsets does the set L = {l, o, v, e} have?
4
6
8
16
Let O = {1, 3, 5, 7, 9, 11, 13, 15} and P = {1, 2, 3, 5, 7, 11, 13}. Find O−P .
O−P={1, 2, 3, 5, 7, 9, 11, 13, 15}
O−P={1, 3, 5, 7, 11, 13}
O−P={9, 15}
O−P={2}
Find F∩T if F={f, a, c, e, b, o, k} and T={y, o, u, t, b, e} .
F∩T={f, a, c, e, b, o, k}
F∩T={f, a, c, e, b, o, k, y, u, t}
F∩T={b, e, o}
F∩T={ a, c, f, k}
What is N ∪P if N ={−5, −4, −3, −2, −1} and P={0, 1, 2, 3, 4, 5} ?
N∪P = {−5, −4, −3, −2, −1, 0, 1, 2, 3, 4, 5}
N∪P = {−5, −4, −3, −2, −1 }
N∪P = ϕ
N∪P = {0, 1, 2, 3, 4, 5 }
Which of the following is a well-defined set?
A set of delicious dishes.
A set of world continents.
A set of male president.
A set of tall classmates.
Which shows a set of human with pair of wings?
{mulawin}
{black condor}
{hawkman}
{ }
Which of the following describes the set M = {8, 16, 24, 32,40}
A set of numbers between 8 to 40.
A set of even numbers from 8 to 40.
A set of numbers divisible by 8.
A set of multiples of 8 from 8 to 40.
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