4 ms·
https://en.m.wikipedia.org/wiki/Martingale_(betting_system) https://en.m.wikipedia.org/wiki/Martingale_(betting_system)
by alex_young 6y ago
https://en.m.wikipedia.org/wiki/Martingale_(betting_system) https://en.m.wikipedia.org/wiki/Martingale_(betting_system)