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_{i=50}^{100} {100 \choose i} \left(\frac{25}{81}\right)^{i} \left( \frac{56}{81} \right)^{100-i}
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random