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15 questions
What type of set is denoted as either { } or ∅?
Superset
Disjointed Set
Empty (or Null) Set
Subset
Find n(A) when
A = {14, 16, 18, 20, 22, 24}
6
4
12
even numbers
A = {x : x is a letter in the word SEAT}
B = {x : x is a letter in the word TASTE}
Determine if these two sets are equal or equivalent.
Not equal because seat has 4 letters and taste has 5 letters.
Equivalent because they have the same letters
Equal because each set has the same cardinality and the same letters.
It is a collection of well-defined group of objects.
Element
Set
Cardinality
Universal Set
1. Which best describe the set
{0, 2, 4, 6, …}?
Set of all counting numbers divisible by 2
Set of all composite numbers
Set of all whole numbers divisible by 2
Set of rational numbers
What is the cardinal of the set, H = {w, o, n, d, e, r, f, u, l}
10
9
8
7
Set D is the set of the distinct letters in the word mathematics. Write the set using the Roster method.
D = {m, a, t, h, e, m, a, t, i, c, s}
D = {m, a, t, h}
D = {m, a, t, h, e, i, c, s}
D = {m, a, t, h, i, c, s}
Set C is the set of whole numbers less than 9. Write the set using the Roster method.
C = {1, 2, 3, 4, 5, 6, 7, 8, 9}
C = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
C = {1, 2, 3, 4, 5, 6, 7, 8}
C = {0, 1, 2, 3, 4, 5, 6, 7, 8}
Which of the following means proper subset?
=
Which of the following is the symbol for element of?
∅
A set whose elements are countable.
finite
infinite
equal
equivalent
What is the cardinality of a null set?
0
1
infinite
undefined