Tell ya what, I'll go out on a limb and let ya know that there should be between 2 and 4 (2 and 4 included, so either 2 3 or 4) numbers from each of these sets.. This is only accurate 60+% of the time..
set 1
2 3 4 9 11 12 13 16 17 18 20 23 25 27 28 30 32 36 45
set 2
1 5 6 7 10 14 15 19 21 22 24 31 34 35 37 38 39 40 42 43 44 46 47 48 49
want a bit more accuracy? 92.474916387959866220735785953177% of the time there will be between 1 and 5 numbers from both sets..
Here's the fine print, some of my worst picks for this draw are from a different grouping method, they are 3 5 7 12 13 21 27 42 and 47