The even numbers are a mixture of both red and black.
The numbers 2, 4, 6, 8, 10, 20, 22, 24, 26 and 28 are all black.
The numbers 12, 14, 16, 18, 30, 32, 34 and 36 are all red.
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They add to 666.
The odds of the ball landing on any single number are 37 to 1.
Roulette is a game of chance. There are 37 (38 in US roulette ) slots on the wheel - 18 red 18 black and 1 green ( 2 green in the US versions ). It is just as likely that the ball will land in any one of the 37 slots. The odds are 37-1.
Blue is one of the three primary colours. The compliment to ant primary colour is the colour achieved by mixing the two remaining primary colours. In this case the complimentary colour to blue is the secondary colour orange.
Yes, they appear opposite one another on a standard colour wheel.