Answer Happy

21) Write the following permutation & combination in terms of factorials, then evaluate a) 15 P b) SC, 2) Write the following factorials in terms of permutation or combination, then evaluan 70! a) b) 8162! 70! 65! Bob is doing research and found a survey that says 88% of American households ha dog. Another survey says that 54% of households have a cat & 63% of households Assuming these surveys are accurate, then what can Bob conclude is the percent of both a cat & a dog? (5pts) o balls are selected at random from an urn containing five red balls and seven d the following probabilities: (5pts each) hat is the probability that both balls are white when picked with replacemen t is the probability that a red ball and a white ball are picked without re