Mathematics, Probability, Betting, Limits, Randomness.
profit equal to the original stake. For example, if you lose the first bet of £1, then the next bet is £2. If this bet wins, you receive £4, having bet £1 on the first go and £2 on the second, leaving you with a net return of £1 (£4 -£2 -£1). This process of betting double the previous amount forms