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.
sum_{v=0}^3 binom(6-v, 2) * binom(6,v) * binom(4,3-v)=
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random