i'm still having trouble grasping probability. Can anyone help me with this one...An aircraft is equipped with three engines that operate independently. The probability of an engine failure is .01. What is the probability of a successful flight if only one engine is needed for the successful operation of the aircraft?

I doubt this is right but i had 3C2*.99*.01^2 which is .000297 and i subtracted that from one to get .999703. Can anyone help me?