The Fibonacci betting system is a betting strategy that is based on the Fibonacci sequence of numbers, where each number is the sum of the previous two numbers. To use this strategy in gambling, you would start by betting a small amount, such as $1. If you lose, you would then bet the next number in the Fibonacci sequence, which would be $1 again. If you lose again, you would bet $2, then $3, $5, $8, and so on. Each time you lose, you would increase your bet by the next number in the sequence. If you win, you would go back two steps in the sequence and start over again. This strategy is generally used in games of chance where the player has a 50/50 chance of winning, such as in roulette or craps.