Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
Given
n
(
U
)
=
50
n(U) = 50
n
(
U
)
=
50
,
n
(
S
)
=
30
n(S) = 30
n
(
S
)
=
30
,
n
(
R
)
=
25
n(R) = 25
n
(
R
)
=
25
, and
n
(
R
∪
S
)
=
48
n(R \cup S) = 48
n
(
R
∪
S
)
=
48
, find: a.
a
n
(
R
∩
S
)
n(R \cap S)
n
(
R
∩
S
)
b.
b
n
(
S
,
but not
R
)
n(S, \text{ but not } R)
n
(
S
,
but not
R
)
Browse the problem library