Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Problem
Problem
Let
U
=
{
1
,
2
,
3
,
4
,
5
,
6
,
7
,
8
,
9
}
U = \{1, 2, 3, 4, 5, 6, 7, 8, 9\}
U
=
{
1
,
2
,
3
,
4
,
5
,
6
,
7
,
8
,
9
}
. a. Find the complement of
A
=
{
2
,
3
,
6
,
7
,
8
}
A = \{2, 3, 6, 7, 8\}
A
=
{
2
,
3
,
6
,
7
,
8
}
. b. If
P
=
{
prime numbers
}
P = \{\text{prime numbers}\}
P
=
{
prime numbers
}
, is
P
′
=
{
composite numbers
}
P' = \{\text{composite numbers}\}
P
′
=
{
composite numbers
}
? Explain your answer.
Browse the problem library