nPr()
\(^nP_r\)=nPr(n,r)
nPr() is used to calculate permutations (order matters). You will most commonly only use it with numbers were the first parameter is you n (Number of items in the set) and the last parameter is your r (Number of selected items). You can also use lists or matrixes of values to calculate multiple permutations at the same time.
Examples
3 items selected from a set of 10:

Using a list:

Using a matrix:

Calculators | All TI-Nspire |
Shortcut | b>5>2 |
Parameters | nPr(Expression, Expression) nPr(List, List) nPr(Matrix, Matrix) |