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 nCr(11,k)*(((6/10)^k)*(4/10)^(11-k)) for k=0..3
sum nCr(11,k)*(((6/10)^k)*(4/10)^(11-k)) for k=0..3
Natural Language
Math Input
Extended Keyboard
