The Oz Lotto is divided into 7 divisions so you can choose your odds of winning per ticket in reverse relation to the size of your prize.
1st Division: In the first division you select the full 7 numbers. Your chances of winning the first division in a single draw are 1 in 45, 379,620.
2nd Division: In the second division you select 6 standard numbers and have 1 or 2 supplementary numbers. The chances of winning the second division in a single draw is 1 in 3,241,401.
3rd Division: In the third division you select 6 standard numbers. Chances of winning the third division are 1 in 180,078.
4th Division: In the fourth division you select 5 standard numbers plus 1 or 2 supplementary numbers. The chance of winning the fourth division is 1 in 29,602.
5th Division: In the fifth division you select only 5 standard numbers. Chances of winning in a single draw are 1 in 3,430.
6th Division: in the sixth division you select 4 standard numbers. Chances of winning the sixth division draw are 1 in 154.
7th Division: the 7th division is the lowest division and has the lowest payouts. In the seventh division you select 3 standard numbers and 1 or 2 supplementary numbers. The chances of winning a seventh division draw are 1 in 87.