Three hunters x,y and z aim at a bird on top of a tree.Their individual probabilities of killing the bird are 3/5,2/3 and 5/6 respectively.Find the probability that 1. Only x and y kill the bird 2. Only two of them kill the bird 3. Only 2 kill the bird 4. Only one of them kill the bird 5. None of them kill the bird 6. All of them kill the bird