Answer:
1/18
Step-by-step explanation:
According to the question: There are 18 million people in Australlia and 1 Million live in perth,
Hence let the 1 million people be the data E
Then No of outcomes supporting the data E/ No of total outcomes supporting all the other data(including E)= fraction of data of e
That implies 1Million/18 Million
Cut the million thats in both numerator and denominator
Hence you get 1/18..