Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
Prove that
∑
r
=
1
n
2
r
−
1
=
n
2
\sum_{r=1}^{n} 2r - 1 = n^2
∑
r
=
1
n
2
r
−
1
=
n
2
.
Browse the problem library