1. In a company that sells computer numerical control (CNC) manufacturing machines, 7% of orders receive "custom instructions" that require special processing from a sales executive.
   1. What is the probability that the first custom order of the week occursbefore the 10th order?
   2. What is the probability that the first 5 custom orders occur before the 20th order?
   3. If we randomly select 30 orders, what is the probability that we have to specially process less than 8 of them?
   4. Write out the full probability model that describes the possible outcomes of randomly selecting 4 orders. (i.e., we could get 0 custom orders, 1 custom order, ...)