3Dice Roulette: Random?

**LooneyTunez** · 27th November 2010, 08:03 PM

So, I'm playing some free tournaments on 3Dice, and one is for roulette. Okay, so I place my bets and start spinning. Not thinking much of it, I just rebet the same, over and over. After a few spins, I see that I've landed on the same number twice in a row. Now, I'm not a numbers guy, but what are the odds of it landing on the same number twice in a row? I keep spinning the the same bets, and it continues to land on the same numbers, often times where I have a bet placed on that particular number. The odds of this in the real world would be astronomical, so this makes me think it's not random, but more likely set up like a slot machine, where a certain payout percentage is expected. I did screenshots to show the patterns. Does this seem odd to anyone?

**refre** · 27th November 2010, 08:09 PM

Not really.
Chance of a number repeating itself is 1 in 37.

Freddy

**Simmo!** · 27th November 2010, 08:14 PM

Originally Posted by refre

Not really.
Chance of a number repeating itself is 1 in 37.

Freddy

On that basis, in your screenshots it happens 7 times, so you would expect to see 7 repeats happen every 259 spins (37 * 7) on average. But obviously it *could* happen in 7 times in 10 spins or 7 times in 1000 spins.

**LooneyTunez** · 27th November 2010, 08:39 PM

So, are we saying this is within the parameters of odds (randomness) to have the same numbers come in pairs like in the screenshots? Like two 10's, another couple numbers, two 32's, another couple numbers, two 24's, etc? Seems like the odds of that type of grouping would be unrealistic.

I have also noticed that when I play Red Dog at 3D, I can miss several times on the biggest spread, only to have it save me shortly later with nailing the one card with 5:1 or 11:1 payouts (and almost predictable) This isn't even just once in a while, it's like the software is monitoring what it's paid out, and dishes out what it needs to maintain a particular payout percentage. I understand that it's nearly impossible for a computer/software to be truly random, but this type of behavior seems to have swings that are unnatural.

**mrjones** · 27th November 2010, 08:50 PM

hi i play alot of roulette at 3 dice when i get the chance this is within the normal rounds , i happen to find roulette at 3 dice very fair in real money plays , couldnt tell you about tournaments as i dont play them too much , but ive had some good rounds playing real money also had some bad ones too ,but they seem fine to me .

**GrandMaster** · 27th November 2010, 09:48 PM

Originally Posted by LooneyTunez

So, I'm playing some free tournaments on 3Dice, and one is for roulette. Okay, so I place my bets and start spinning. Not thinking much of it, I just rebet the same, over and over. After a few spins, I see that I've landed on the same number twice in a row. Now, I'm not a numbers guy, but what are the odds of it landing on the same number twice in a row? I keep spinning the the same bets, and it continues to land on the same numbers, often times where I have a bet placed on that particular number. The odds of this in the real world would be astronomical, so this makes me think it's not random, but more likely set up like a slot machine, where a certain payout percentage is expected. I did screenshots to show the patterns. Does this seem odd to anyone?

The probability of 7 or more numbers being the same as the previous one in a list of 60 roulette outcomes is about 0.001, so it is definitely unusual. Now you have a hypothesis, so collect more data for testing.

**Simmo!** · 27th November 2010, 09:53 PM

Originally Posted by GrandMaster

The probability of 7 or more numbers being the same as the previous one in a list of 60 roulette outcomes is about 0.001, so it is definitely unusual.

1 in a 1,000 doesn't sound so unusual to me to be honest. We could be sitting here talking about getting consecutive numbers 7 times, or back-to-back reverse numbers happening 7 times, or back-to-back numbers that appear next to each other on the table etc etc.

I reckon you could pick out pretty much any sequence of 60 numbers and spot a pattern that occurs a few times in it. Just that the same number pattern is easy to spot.

**Glunn11** · 27th November 2010, 09:53 PM

You can't draw any conclusions from a few sets of numbers, I'm afraid. Also, the odds of getting four zeroes in a row are the same as getting 17, 12, 29, then 6 (in order, of course). While seeing 4 zeroes in a row may cause players to be amazed, I hardly imagine that there would be any player who is amazed at the latter sequence showing up.

For instance, let's say you had a $100 bankroll and you wagered $1 at a time. If you placed a straight bet on 00 in American roulette (which, if I am not mistaken, has a house edge of 5.26% and a standard deviation of 5.76), there is a 9.6% chance that you won't hit a single win before you go bust (according to this calculator). The odds are certainly not "astronomical."

Furthermore, if 3Dice was rigging American Roulette of all games (which has a natural theoretical return of 94.74% or so), that would be pitiful.

Hope that was helpful

**Simmo!** · 27th November 2010, 10:17 PM

Originally Posted by Glunn11

...American Roulette of all games (which has a natural theoretical return of 94.74% or so)...

Something I've always wondered. Does ANYONE play American Roulette online? And if so, why that instead of European?

**Glunn11** · 28th November 2010, 12:16 AM

Originally Posted by Simmo!

Something I've always wondered. Does ANYONE play American Roulette online? And if so, why that instead of European?

No idea. I've always wondered that myself. It may be that some incredibly naive gamblers think that European has different rules, or that "it's only just one more space on the wheel -- how much damage can that really do?" mentality.

If I remember right, however, 3Dice American Roulette does have a special rule where half of even-money wagers are returned if 00 is landed on (but not 0). This would decrease the house edge from 5.26% to 3.95%, but even then that's not nearly as good as 2.7% house edge from European roulette.