nCr()
\(^nC_r\)=nCr(n,r)
nCr() is used to calculate combinations (order doesn’t matter). 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 combinations at the same time.
Examples
3 items selected from a set of 10:
| Calculators | All TI-Nspire |
| Shortcut | b>5>3 |
| Parameters | nCr(Expression,Expression) nCr(List, List) nCr(Matrix, Matrix) |
Using a list:
Using a matrix:
