Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
2! * (9 choose 3) * 4! / 5 * 5!
2! * (9 choose 3) * 4! / 5 * 5!
Natural Language
Math Input
Extended Keyboard
