Home
Random
Log in
Settings
Donate
About Wikiversity
Disclaimers
Search
Binomial coefficient/Sum/Exercise
Language
Watch
Edit
Prove the formula
2
n
=
∑
k
=
0
n
(
n
k
)
.
{\displaystyle {}2^{n}=\sum _{k=0}^{n}{\binom {n}{k}}\,.}
Create a solution
