How Are the Numbers Arranged on a Roulette Wheel?

There are a total of 38 numbers on a roulette wheel – 18 red, 18 black, and two green (0 and 00). The numbers are arranged in a specific order around the wheel, and this order is designed so that the ball has an equal chance of landing on any number.

The arrangement of numbers on a roulette wheel is known as the “sequence of numbers”. The most common sequence of numbers is known as the “European sequence”, which is: 0, 32, 15, 19, 4, 21, 2, 25, 17, 34, 6, 27, 13, 36, 11, 30, 8, 23, 10, 5, 24, 16, 33, 1 and 20.

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PRO TIP:The numbers on a roulette wheel are arranged in pairs of odd and even numbers, alternating between red and black. Each number is located opposite its mirror number on the wheel, which helps players remember where each number is located.

The European sequence of numbers is used on most roulette wheels in Europe. There is also the “American sequence”, which is: 0, 28 , 9 , 26 , 30 , 11 , 7 , 20 , 32 , 17 , 5 , 22 , 34 , 15 , 3 , 24 , 36 , 13 , 1 and 00.

The American sequence of numbers is used on most roulette wheels in America. As you can see from the above two sequences of numbers, the American wheel has an extra number (00) which gives the house an extra edge over players.

No matter which sequence of numbers is used on a particular roulette wheel, the odds of any given number coming up are always the same. The odds of any given number coming up on a European wheel are 1 in 37 (because there are 37 total numbers), while the odds of any given number coming up on an American wheel are 1 in 38 (because there are 38 total numbers).