**Scoring system**
OK, this is what I found at another site

. This is from Joe Roberts, CDEX, of Lottery Director fame. Joe is a member here and if he checks in he may be able to give us some more ideas.

This is close to what Flore said but you have to incorporate how many numbers are in the lotto.

Example for a 6/49:

((Qty of winning numbers(hit) / Qty of numbers picked) / (6/49)) * 100.

So, compare (1) 2 from 10 picked compared to (2) 3 from 20

(2/10)/(6/49)*100 = 163.3

(3/20)/(6/49)*100 = 122.5

Some jackpot winning comparisions

(6/10)/(6/49)*100 = 490

(6/20)/(6/49)*100 = 245

and the ultimate

(6/6)/(6/49)*100 = 816.66

So, obviously, if you pick 6/10 the score is much better than 6 from 20 and the score reflects this. The other thing here is the 2/10 wins nothing, but the 3 from 20 may have a 3-hitter.

Also, if we include the bonus our denominator goes to 7/49

Thanks Joe