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.
1- (1-p)^20- 20*p*(1-p)^19 -190*p^2*(1-p)^18 >= 0.15
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random