How to Use the TI 30XS, TI 30X IIS to Calculate Factorial

Ever wonder how to use the TI 30XS or TI-30X IIS calculator to find the Factorial of a number (n!)? To see or buy this calculator on Amazon please click this link:
To see or buy this calculator on Amazon please click this link:
White: amzn.to/2C1i86u
Orange: amzn.to/2C1LjGC
Blue: amzn.to/2gS3HXs
Pink: amzn.to/2zniMLR
Calculating Factorials on this calculator is really easy once you know where to look for the function, it is hidden under the "prb" key. This tutorial is demonstrates how to find the function, and how to use it. This makes your computations much simpler, especially when you are computing binomial probabilities!