Aussie facts

How well do you know Australia?
1.When was Commonwealth of Australia formed?
2.How many states are there?
3.What does ANZAC stand for?
4.Australia has hosted the Olympics two times. Where and when where they held?
5.The capital of Australia is?
6.Name the only state NOT to have received convicts?
7.What is a bludger?
8.What is a drongo?
9.In 1967 Prime minister Harold Holt disappeared. What caused that?
10.Name the Australian national flower?