Keep getting these wrong please help:(

A radio host wants to use four promotions on her morning show. One promotion will fol- low the sports report, one will be after the local news, one will be before the national news, and the last promotion will be after the weather. If she has a total of eleven promotions from which to choose, then how many possible ways can the morning program be set up? The butcher shop in Cle Elum allows customers to pick 3 smoked meats for their Pick Three Special. They have 7 different meats to choose from. How many ways can the Pick Three Special be chosen? . A poll shows that 12% of respondents believe that coin collections are a good investment. Find the probability that exactly 3 out of 17 people surveyed will believe that coin collections are a good investment. Pa==