Roulette wheel numbers directly opposite each other, at certain stages in the game, switch over to each other.

European roulette wheel number opposites

Because the European roulette wheel has an odd 37 numbers. A numbers direct opposite, is not one number but two. Take the 0 zero for instance, it is directly opposite the 5 & 10.

You need to watch for roulette numbers that oppose each other, that start occurring, i.e. playing their opposite numbers, at certain stages of play in the game. The European roulette wheel is in no real order, it's chaotic at best.

American Roulette Wheel number opposites

Whereas the American roulette wheel has an even 38 numbers. The number has only one direct opposite number.

Take the 0 zero this time, it's opposite number is 00 double zero.

Also the American roulette wheel is very ordered in a sense, 1 is opposite 2, and so on all the way round the wheel, 3 opposes 4. But the roulette wheel is not ordered in any number sequence.