2010007605

SubArea: 
Combinatorics
Level: 
B
Project ID: 
2010007605
Source Problem: 
9000136905
Accepted: 
0
Clonable: 
1
Easy: 
1
For \(n\in \mathbb{N}\), the difference \(\left({n+1\above 0.0pt n} \right) -\left ({ n+1\above 0.0pt n+1}\right)\) equals to:
\(n\)
\(0\)
\(n+1\)
\(2(n+1)\)