Which seems like the better bet to you: Pick 6 numbers from 1 to 50 ... or Pick 6 numbers from 1 to 15 ? Analysis Lotto manipulates the Deltas - or differences between the digits of winning lotto and keno numbers, which have some very interesting characteristics, and gives you a way to pick from fewer numbers. The program stores and tracks historical data on your games, and gives you 8 different methods to choose numbers.