Actually it works for a short time like in the first 10-20minutes depends on your luck but if you use martingale strategy for a long run, you will be dead because martingale for a long run is a big no for me and usually you will ended with lose.
math said work never, short or long
if you dont use martigale and choice random, you have similar %
i'll show you
first bet: you choice RED on roulette: you have 50% of win (in real you have 36/2 on 37) -> result BLACK -> you lose
second bet: you choice RED on roulette with (x2):
you have too 50% of win!!!!is always 50%
- if you play for less minutes
- if you play for 1hour
- if you play for days