Betting systems are systems designed to help players win and make profit when betting in a casino. There are several betting systems, the most popular among them being:

1. The Martingdale System:

The Martingdale betting system operates on the principle that gamblers double subsequent bets after each loss with the logic that the first win can possibly recover previous losses. In this system, each time a bettor wins, he either places another bet or stops betting in order to make profit. The Martingdale system encourages bettors to keep doubling up their bets until the losing streak is over.

2. The D'Alembert System:

The D'Alembert betting system operates on the principle that players should raise their bets after every loss and reduce their bets after every win. The logic behind the D'Alembert system is that when a player loses and raises his next bet, a win will help the player recover loses and make profit. On the other hand, when a bettor wins, he reduces his bet in order to save money in case he loses on the next bet.

3. The Parlay System:

The Parlay betting system has been popular since the 16th Century. The Parlay betting system is a low risk betting system that operates on the principle that players bet with winnings only. Under the Parlay system, each time a player wins, he or she saves the original bet and places the winnings on the table for the next bet. The parlay system is suitable for beginners and is very profitable.

4. The Fibonacci System:

The Fibonacci System is popular among blackjack and roulette players. It is based on a mathematical principle. The principle behind the Fibonacci system is that the sequence of bets are cumulative. That is the next number is equal to the sum of the two previous numbers. Players are to use the forward sequence on losing bets and the backward sequence on winning bets. Each loss requires the player to advance to the next number while a win requires the player to take two steps backward.

5. The Paroli System:

The Paroli betting system operates on the principle of positive progression. It stipulates that players should increase their next bets after each win in order to make more profit. However, the Paroli system imposes a limit on players. Once the limit is reached players should stop playing to avoid making a loss.

6. The Labouchere System:

The Labouchere betting system is a popular betting system among roulette players. The principle behind this betting system is budgeting. It requires players to determine how much they intend to win during a betting session and then use a combination of betting units and a written list to attain that goal. The Labouchere betting system is a low risk betting system that is suitable for beginners.

7. The 50% System:

The 50% betting system is a positive progression betting system that has recently become popular. The principle behind this betting system is that bettors should increase their next bet by 50% if they won the previous bet. For instance, if your first bet is $10 and you win, you add 50% to it. This means that your next bet will be S15.