Sort:  

True , its like 10% chance per number so to get exactly 5 numbers in same order it is 10% * 10% * 10% * 10% * 10% which amounts to 0.001% . I think 4 numbers would do justice and 500 Steem is pretty good amount :)

The odds of winning are 100k to 1.

4 numbers would be 10k to 1. If we end up with say 500 players by year-end, that would be a winner every 20 days and SPinvest could not afford tp pay put 500 STEEM every 3 weeks.

Big odds= Big prize :)