Roulette is a game of pure chance – no more and no less. Here are three useful and fun systems with which to select your numbers.

2.  Anyone who says that you can improve your odds at the
roulette table by incorporating strategy is either lying or
simply ignorant of the truth. Roulette is a game based
completely on chance - the spinning wheel, the rolling
ball, and at the end of the tunnel, the squares upon which
you’ve actually placed your chips.
 That being said, there seem to be a number of systems of
betting that have gained popularity over the years. We
want to talk about the three major betting systems:
martingale, grand martingale and cancellation.

3.  In martingale, the player is meant to double his bet each
time he loses. The idea here is that after a series of
unfortunate losses, the martingale system will net the
player a profit that is at least equal to his first bet so that
he leaves the table, at worst, in the same position that he
started.
 Martingale may sound tempting, but it's critical to realize
that a particularly bad series of losses (and let's be honest:
it's very easy to have a bad day at the casino) could
mean complete financial ruin in a very short time.

4.  Remember, simply because the spinning wheel
selected a 13 in one round does not mean it will not
purposely vary where it lands in future rounds. This
makes it fairly amusing when roulette tables list which
numbers were selected in the previous 10 rounds.
 It doesn't make a shred of difference what these
numbers are. At any point in the game, before any
spin, there is an equal chance of any number of
being selected no matter what preceded it.

5.  In grand martingale, players do not simply double
their bet after each successive loss, but actually add
another unit so that they're betting more and more
every time. If a player loses on a $10 bet, then
according to the grand martingale system he should
bet $30 on his next wager.
 At best, grand martingale can be enormously
profitable. At worst, however, it can be financially
debilitating and can ruin you quicker than probably
any other system or game ever could at the casino.

6.  In cancellation, players start with a number or series of
numbers and bet the total on either end of the series. If
the player wins, then he cancels the numbers that he just
played. If he loses, however, then he adds the total that
he just played to the end of the series.
 Once all the numbers have been canceled, the result is
supposed to be a profit that is equal to the sum of the
original series. There's no mathematical substance in
cancellation, but it can be a fun and systematic way to
wager your money.

7.  Remember: nothing is guaranteed in roulette, and a
victory in one round could easily translates into a loss
in another one. Decide in advance how much your
bankroll will be, and stick to that no matter what
happens. That will make roulette a fun and exciting
adventure.