This is the result of 10 million trials. A trial a selection of random numbers from 1-38 until a repeat happens.
To point out the obvious, the more unique numbers you have, the harder it will become to get another unique number, but the easier it will become to get a repeat. The more unique numbers there are, the higher the chance of winning, but the more numbers you have to cover. In fact, if you wait for 12 unique numbers, you will about the same chance of winning as if you just placed a bet on the dozens.
It seems like a fun game where you can turn the dials and tweak the inputs and some how get an edge, but in the end, it seems like no matter how complicated the system, it really just boils down to how many numbers are covered during the spin.
1 unique numbers have a 100.0 % chance to get this far with a 2.63151 % chance to repeat. 10000000 trials made it this far.
2 unique numbers have a 97.36849 % chance to get this far with a 5.26594 % chance to repeat. 9736849 trials made it this far.
3 unique numbers have a 92.24112 % chance to get this far with a 7.88188 % chance to repeat. 9224112 trials made it this far.
4 unique numbers have a 84.97079 % chance to get this far with a 10.53624 % chance to repeat. 8497079 trials made it this far.
5 unique numbers have a 76.01806 % chance to get this far with a 13.13859 % chance to repeat. 7601806 trials made it this far.
6 unique numbers have a 66.03036 % chance to get this far with a 15.79089 % chance to repeat. 6603036 trials made it this far.
7 unique numbers have a 55.60358 % chance to get this far with a 18.3849 % chance to repeat. 5560358 trials made it this far.
8 unique numbers have a 45.38092 % chance to get this far with a 21.06692 % chance to repeat. 4538092 trials made it this far.
9 unique numbers have a 35.82056 % chance to get this far with a 23.69647 % chance to repeat. 3582056 trials made it this far.
10 unique numbers have a 27.33235 % chance to get this far with a 26.30795 % chance to repeat. 2733235 trials made it this far.
11 unique numbers have a 20.14177 % chance to get this far with a 28.91886 % chance to repeat. 2014177 trials made it this far.
12 unique numbers have a 14.317 % chance to get this far with a 31.59503 % chance to repeat. 1431700 trials made it this far.
13 unique numbers have a 9.79354 % chance to get this far with a 34.23961 % chance to repeat. 979354 trials made it this far.
14 unique numbers have a 6.44027 % chance to get this far with a 36.87811 % chance to repeat. 644027 trials made it this far.
15 unique numbers have a 4.06522 % chance to get this far with a 39.40869 % chance to repeat. 406522 trials made it this far.
16 unique numbers have a 2.46317 % chance to get this far with a 41.9764 % chance to repeat. 246317 trials made it this far.
17 unique numbers have a 1.42922 % chance to get this far with a 44.66002 % chance to repeat. 142922 trials made it this far.
18 unique numbers have a 0.79093 % chance to get this far with a 47.82851 % chance to repeat. 79093 trials made it this far.
19 unique numbers have a 0.41264 % chance to get this far with a 49.83521 % chance to repeat. 41264 trials made it this far.
20 unique numbers have a 0.207 % chance to get this far with a 53.01449 % chance to repeat. 20700 trials made it this far.
21 unique numbers have a 0.09726 % chance to get this far with a 55.40818 % chance to repeat. 9726 trials made it this far.
22 unique numbers have a 0.04337 % chance to get this far with a 58.38137 % chance to repeat. 4337 trials made it this far.
23 unique numbers have a 0.01805 % chance to get this far with a 60.88643 % chance to repeat. 1805 trials made it this far.
24 unique numbers have a 0.00706 % chance to get this far with a 63.88102 % chance to repeat. 706 trials made it this far.
25 unique numbers have a 0.00255 % chance to get this far with a 61.96078 % chance to repeat. 255 trials made it this far.
26 unique numbers have a 0.00097 % chance to get this far with a 68.04124 % chance to repeat. 97 trials made it this far.
27 unique numbers have a 0.00031 % chance to get this far with a 74.19355 % chance to repeat. 31 trials made it this far.
28 unique numbers have a 8e-05 % chance to get this far with a 62.5 % chance to repeat. 8 trials made it this far.
29 unique numbers have a 3e-05 % chance to get this far with a 66.66667 % chance to repeat. 3 trials made it this far.
30 unique numbers have a 1e-05 % chance to get this far with a 100.0 % chance to repeat. 1 trials made it this far.