Roulette players sometimes try to place bets that they believe are designed to win. Unfortunately, there is only one person that is designed to win in roulette, and it is not the player. Players sometimes stick to the odd/even bets, as they believe they have a 50-50 shot at winning. However, the green numbers (zero and zero-zero) are neither odd nor even.
Other roulette players employ a strategy where they monitor the numbers that have occurred recently on the roulette wheel. For example, a player may observe that over the last hundred spins, every number with the exception of the number one has occurred at least two times, with most numbers hitting at least three times. Thus, the player believes that the wheel is due to produce a one. Because of this belief, the roulette player wagers a substantial amount on the number one.
While this strategy sounds great, it is mathematically flawed. The wheel does not have a memory. Roulette wheels are not obligated to provide an even distribution of numbers throughout the course of the hour. On a short-term basis, this may appear as a statistical abnormality. However, a mere hour is not long enough to make an observation. The wheel is not required to produce three ones per hour and even if it were, it lacks a memory.
Moving along, some roulette strategies require a bettor to bet on a certain number of spaces. Players following this system bet five numbers in hopes of catching a winner. Whether a player bets a single number or multiple numbers, the chances of hitting a winning number remains fixed. In American Roulette, the odds of a number being the winning number on a single spin is thirty-seven to one, while a European roulette wheel’s odds on a single number occurring are thirty-six to one.
If a player bets five numbers, each number has the same chance of hitting. If a player bets $1 on every number of an American roulette, the payout would fall short of the money spent on the bets, as a single number pays thirty-five to one, yet the odds against winning are thirty-seven to one. Because of these odds, a player can expect to lose a slightly more than five cents per number bet per spin on average.
Some roulette strategies rely upon the amount of money wagered in each bet. The amount of money wagered increases or decreases depending on the results of the previous bet in the different roulette betting strategies. Once again, considering there is not a bet on the wheel that has a profitable expectation, there is no way to manipulate the amount of money wagered that will produce positive results over an extended period. Additionally, the methods that require a player to increase his wager progressively will occasionally reach the table maximum. Thus, a player will be unable to continue betting under their betting system, which presents a flaw in betting systems employed in roulette strategy.