The nCr() Command


Command Summary

Performs the operation "n choose r" using n and r.

Command Syntax


Menu Location


Calculator Compatibility

This command works on all calculators.

This performs the operation "n choose r" where expr1 is n and expr2 is r.



The formula used to obtain the result is:

\begin{align} \frac{n!}{r!(n-r)!} \end{align}

This is often referenced with Pascal's Triangle and binomial expansion as well as many areas of mathematics.

Related Commands

Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-Noncommercial 2.5 License.