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.
(10 choose 2) * (0.004)^2 * (0.996)^(10-2) * 4
(10 choose 2) * (0.004)^2 * (0.996)^(10-2) * 4
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random