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 from i = 360 to 500((binomial coefficient(500, i) )* 0.8^i * 0.2^ (500-i))
sum from i = 360 to 500((binomial coefficient(500, i) )* 0.8^i * 0.2^ (500-i))
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random