i need help please

1. [14 marks] Suppose, on average, Staples on 8th Street in Saskatoon sells 10 desks per day. Assume each purchase is independent. a) Is the random variable "number of desks sold per day" discrete or continuous? Why? Please answer in no more than 2 sentences. b) What is the probability that 5 desks will be sold in a day? c) What is the probability that between 4 and 6 desks (inclusive) will be sold in a day? Hint: recall "inclusive" means "including both end points of the interval". Here, that means 1"including 4 and including 6"