Please see the Terms of Use for further information. With the exception of Western Australia, players must by aged 18 or over but in WA tickets for the lottery can be purchased at 16. Which Australian Lottery Has the Best Odds of Winning? There are plenty of safe, legal and enjoyable gambling options open to the public. These games all require you to pick six numbers from 1 to 45 so the odds are exactly the same, and you often see multiple Division 1 winners. /*