The test is like this:
You bet all previous numbers until one of them repeats.
This means than in the 2nd spin we only bet the previous number.
In the 3rd spin we bet the previous 2 numbers.
In the 4rth spin we bet the previous 3 numbers.
until one of the previous numbers repeats.
Then we start again with a new series of numbers.
That is the test that is presented in the table
SPIN Nr. of series that had the first repeater in this spin
I believe it is worth much study and thinking this test.
Oh ok. Now I get it.
So, to reach up to the 10th spin, you have to spend 9+8+7+6+5+4+3+2+1 =45 units. Since we can't always expect a hit in the very first few spins is there a progression involved? Or just flat bets will do fine? And is there a limit on the number of spins to be played or do we keep going until there is a win? This is another way of taking advantage the law of 2/3s, by counting on a repeat early. The earlier the more profitable.
In that table if we add up all the series to get the TOTAL and then divide each individual series into the TOTAL we will come up with a probability of a hit for every spin. That would be a more useful figure to work with. The total series is about 356,000 on total .
So the probability in the 2nd spin is about 9.8/356=2.7%. The 5th spin 33.1/356=9.29% and the 10th spin 30.2/356=8.48%.
At what point can we conclude that it will make a profit if played that way? It looks like it's a long term system, because if you keep on hitting in late spins you obviously are at a loss. That can be countered by a streak of early wins. I think the only way to test it, is to actually play it for as long as it takes to show some consistency in results. Not in real roulettes. It can be tested with a collection of numbers.
But it will take a lot of work.
The other way I have tested is to take 12 unique numbers, and play them for 6 spins. As I very very rarely see 18 unique numbers in a row, then out of those 12 at least one must repeat. You just need a strong enough bank roll, to endure the black swan if she decided to bite within the very first try. Or in the first 2 tries in a row. I estimate about 95%+ to have a hit in 6 spins and it could very well be in the first 2-3 spins, as I see it very often. So you may rarely have to go thru all 6 betting spins.