please answer

HappyMilks Sdn. Bhd. produces dairy products. 70% of the dairy products sold are chocolate flavor, and 30% are strawberry flavor. The sales department will record the type of dairy product purchased by each of the next 20 customers. Given a random variable X as the number of dairy product purchased among these 20 customers, answer the following questions: a) Determine whether X is a binomial random variable or geometry random variable. (1 mark) b) Calculate the probability that exactly eight dairy products purchased are chocolate flavor milk. (1 mark) c) Calculate the probability that between seven and ten (inclusive) are chocolate flavor milk. (4 marks) d) Calculate the probability that between three and five (inclusive) are strawberry flavor milk. (4 marks)