I played today at one MG casino. I placed 100$ bets on red 20 times. It only hit red 3 times and 17 times it hit black. Can somebody ,who knows roulettes' mathematics, tell me if this result is normal or may be something is rigged here?
I played today at one MG casino. I placed 100$ bets on red 20 times. It only hit red 3 times and 17 times it hit black. Can somebody ,who knows roulettes' mathematics, tell me if this result is normal or may be something is rigged here?
I played today at one MG casino. I placed 100$ bets on red 20 times. It only hit red 3 times and 17 times it hit black. Can somebody ,who knows roulettes' mathematics, tell me if this result is normal or may be something is rigged here?
Random Roulette Spins
Before you waste your money testing a betting system in the casinos please use the following computer generated spins. Remember, it takes about 10,000 or so spins before the ups and downs start to average out and you see that no betting system can survive the long run.
The probability of red winning 20 times in a row in roulette is (18/38)20 = 1 in 3,091,874. Thus, if red has already hit the last 19 spins the odds are that the next spin will almost certainly be black because of the long shot against 20 reds.
First, the odds of 19 reds in a row and then a black are the same as 20 reds in a row. The past does not matter. The probability of red after 19 reds is 18/38.
It's not 50/50, that's the mistake most people make with roulette. There's a green there for a reason
I played today at one MG casino. I placed 100$ bets on red 20 times. It only hit red 3 times and 17 times it hit black. Can somebody ,who knows roulettes' mathematics, tell me if this result is normal or may be something is rigged here?
There were not any ZEROs in my play
It doesn't matter if 0 and/or 00 comes up during actual play when you're calculating probabilities of an event happening.
There were not any ZEROs in my play
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Great, great example of our limited understanding of probability...
I don't think the video runs long enough to explain how it works - but they explained it later in the show.
Try to throw the coin 20 times. You can do it many times. I think it will take at least a couple of weeks of non stop throwing before you can get the result that I had today.
Assuming single-zero roulette, there is a 0.16% chance of exactly 3 reds in 20 spins, and a 0.19% chance of 3 or fewer reds in 20 spins.I played today at one MG casino. I placed 100$ bets on red 20 times. It only hit red 3 times and 17 times it hit black. Can somebody ,who knows roulettes' mathematics, tell me if this result is normal or may be something is rigged here?
Assuming single-zero roulette, there is a 0.16% chance of exactly 3 reds in 20 spins, and a 0.19% chance of 3 or fewer reds in 20 spins.
I used combinations, not permutations. This results is the formula SlotsWizard lists above.Did you use: (n)r = n!/(n-r)!
I believe the result of the equation listed above is 0.1576%, rather than 0.1585%. I agree that the chance of 3 reds, 17 blacks, and no 0s is 0.063%. However, the original poster seemed concerned with the low number of winning hands (reds), so I think it is more appropriate to treat it as the chance of 3 wins or less in 20 spins. This value is...Thanks aka23, you confirmed my math. Shortly after posting yesterday, I edited out my numbers because I wasn't sure if they were correct.
combin(20,3) * (18/37)^3 * (19/37)^17 = 0.1585% ≈ 1 in 635
Although, this formula includes the possibility of having hit a zero, which he says he did not. Knowing this and excluding it from the equation, would you agree that the probability becomes 0.063% ≈ 1 in 1,591?
You're right - it does. I was using Dubya's patented "fuzzy math".I believe the result of the equation listed above is 0.1576%, rather than 0.1585%.