a) A tourist is going to visit 6 different cities in the UK. She can fly to any of the cities at the start of the trip, and from any of the cities to her country at the end of the trip. She can travel between any two pair of cities by two different means of transport (bus or train) (i) In how many different orders can she choose to visit the attractions? (You should [4%) stato which formula you are using, and justify its use.) (ii) For any fixed choice of order, how many different ways are there for her to .[4%] complete her journey? (You should state which formula you are using, and justify its use.)