A firm has two computer systems available for processing telephone orders. At any given time, system A has a 10% chance of being "down", while system B has just a 5% chance of being "down". The computer systems operate independently. For a typical telephone order, determine the following: 6.1) What is the probability that neither computer system will be operational (rounded off to three decimals)? [2] 6.2) What is the probability that both systems will be operationa