PERM

Member Of Menu: 
Stat
Argument Types: 
Real
Symbol
Expression
Result Type(s): 
Real
Expression
Invertible: 
No
Valid In Expression: 
Yes
Stack Diagram: 
Real1 Real2 Real3
Symbol1 Symbol2 Expression3
Expression1 Expression2 Expression3

This operation calculates the number of permutations given Real1 items taken Real2 at a time.