Q. Population of Melbourne?

Melbourne(3N) → Gold Coast(2N) → Cairns(2N) → Sydney(2N)

Melbourne(3N)

Melbourne(3N) → Gold Coast(3N) → Cairns(2N) → Sydney(3N)

Melbourne(3N) → Gold Coast(3N) → Sydney(3N)

Sydney(3N) → Melbourne(3N)

Melbourne(2N) → Whitsundays Islands(3N) → Brisbane(2N) → Sydney(2N)