C(600,0)*0.005^0*(1-0.005)^(600-0)+C(600,1)*0.005^1*(1-0.005)^(600-1)

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.