Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
The sum of the first
n
n
n
terms of a certain arithmetic progression is given by
S
n
=
4
n
2
+
3
n
S_n = 4n^2 + 3n
S
n
=
4
n
2
+
3
n
. What is the common difference of the progression? a)
4
4
4
b)
7
7
7
c)
8
8
8
d)
3
3
3
Browse the problem library