9000140506

SubArea: 
Combinatorics
Level: 
B
Project ID: 
9000140506
Accepted: 
1
Clonable: 
0
Easy: 
0
Simplify \(\frac{2!} {1!} + \frac{3!} {2!} + \frac{4!} {3!}\).
\(9\)
\(\frac{29} {6} \)
\(\frac{9} {6}\)
\(\frac{12!+9!+8!} {6!} \)