9.Six cats and seven dogs are in the local animal shelter. Four animals are chosen at random to visit a local school to educate the children on the great need for homes for these animals.(3markseach)

a)What is the probability that exactly two of the animals are cats?

b)What is the probability that at least one cat is chosen?

10.A hockey player scores on 18% of his shots.(2 marks each)

a)What is the probability he will score for the first time on his fifth shot?

b)What is the probability that it will take him fewer than 3 shots to score?

c)How many shots should he expect to take before scoring?