In Canada, there is a lottery called LOTTO MAX. Basically, you pick 7 unique numbers between 1 and 49.
To calculate your odds of winning the lottery, you need to find how many ways there are to pick 7 unique numbers, in any order, from a group of 49 numbers.
Here is the formula:
Therefore, the odds of winning Lotto Max is 1 in 85,900,584.