If your base bet is 1 satoshi you would need about 150.000.000 bets to get to 1.2 btc
I think that should usually depend on what kind of martingale strategy you are using.
Some people martingale at 50%. Some also matingale at 10% or at 90%.
They just increase their base bets by different ratios.
Also, at 90% a martingale of 7-8 would get you at >1 BTC.
I dont see how you can use 90% at 1 satoshi bet, that means you would win like what 0.1 satoshi each win?
And anyways it would be the same at any ratio
Nope, the minimum bet incase you are betting at 90% would be 10 satoshi to win 1 satoshi.
And would follow, 10,100,1000,10000...