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# Spread-Bet Roulette

## Introduction

Spread-Bet is a set of side bets in roulette by Cammegh, a maker of gaming equipment, including roulette tables and signs. The outcome is based on the sum of two electronic spins, as shown to the player on the electronic game display.

## Rules

Spread-Bet is a set of seven side bets that can be added to a standard roulette game. Following are the rules.

1. In addition to the standard roulette spin, two random outcomes will be drawn electronically and displayed to the player virtually on the scoreboard in the form of two concentric roulette wheels.
2. The two virtual spins will be on the same kind of roulette wheel as the physical spin. In other words, the same number of zeroes will be used.
3. There are seven bets to choose from, which will win according to the sum of the two virtual spins. These betting spaces will be placed in the area for outside bets.
4. The win of the Spread-Bets shall be based on the sum of the two virtual spins. Both the zero and double-zero shall count as zero for purposes of this sum.
5. The seven different Spread-Bets cover various ranges from 0 to 72. Different versions are available to the casino operator, which are shown in the analysis section of this page.

## Single-Zero Wheel Analysis

The following four tables show the four sets of bets available to casino operators for single-zero wheels. Each table shows the seven bets available, what a win pays (on a "to one" basis), the number of winning combinations, probability of winning, and expected return to the player.

### Single-Zero Wheel — Pay Table 1

Bet
Match
Pays Combinations Probability Return
0 1200 1 0.000730 -0.122717
1 to 11 15 77 0.056245 -0.100073
12 to 18 10 112 0.081812 -0.100073
19 to 39 1 618 0.451424 -0.097151
40 to 50 3 308 0.224982 -0.100073
51 to 70 4 250 0.182615 -0.086925
71 to 72 400 3 0.002191 -0.121256

### Single-Zero Wheel — Pay Table 2

Bet
Match
Pays Combinations Probability Return
0 to 4 80 15 0.010957 -0.112491
5 to 18 6 175 0.127831 -0.105186
19 to 30 3 306 0.223521 -0.105917
31 to 39 3 312 0.227904 -0.088386
40 to 50 3 308 0.224982 -0.100073
51 to 69 4 247 0.180424 -0.097882
70 to 72 200 6 0.004383 -0.119065

### Single-Zero Wheel — Pay Table 3

Bet
Match
Pays Combinations Probability Return
0 or 1 400 3 0.002191 -0.121256
2 to 11 15 75 0.054785 -0.123448
12 to 18 10 112 0.081812 -0.100073
19 to 33 2 405 0.295836 -0.112491
34 to 54 1 603 0.440467 -0.119065
55 to 67 7 156 0.113952 -0.088386
68 or 72 80 15 0.010957 -0.112491

### Single-Zero Wheel — Pay Table 4

Bet
Match
Pays Combinations Probability Return
0 to 2 200 6 0.004383 -0.119065
3 to 7 40 30 0.021914 -0.101534
8 135 9 0.006574 -0.105917
9 to 25 3 306 0.223521 -0.105917
26 to 44 1 612 0.447042 -0.105917
45 to 70 2 403 0.294375 -0.116874
71 or 72 400 3 0.002191 -0.121256

## Double-Zero Wheel Analysis

The following five tables show the four sets of bets available to casino operators for double-zero wheels. Each table shows the seven bets available, what a win pays (on a "to one" basis), the number of winning combinations, probability of winning, and expected return to the player.

### Double-Zero Wheel — Pay Table 1

Bet
Match
Pays Combinations Probability Return
0 320 4 0.002770 -0.110803
1 to 11 12 99 0.068560 -0.108726
12 to 18 9 126 0.087258 -0.127424
19 to 39 1 654 0.452909 -0.094183
40 to 50 2 308 0.213296 -0.360111
51 to 71 10 252 0.174515 0.919668
72 1275 1 0.000693 -0.116343

### Double-Zero Wheel — Pay Table 2

Bet
Match
Pays Combinations Probability Return
0 to 1 150 8 0.005540 -0.163435
2 to 9 18 68 0.047091 -0.105263
10 to 25 3 328 0.227147 -0.091413
26 to 45 1 662 0.458449 -0.083102
46 to 57 4 258 0.178670 -0.106648
58 to 70 10 117 0.081025 -0.108726
71 or 72 400 3 0.002078 -0.166898

### Double-Zero Wheel — Pay Table 3

Bet
Match
Pays Combinations Probability Return
0 or 1 150 8 0.005540 -0.163435
2 to 9 18 68 0.047091 -0.105263
10 to 25 3 328 0.227147 -0.091413
26 to 45 1 662 0.458449 -0.083102
46 to 57 4 258 0.178670 -0.106648
58 to 71 10 119 0.082410 -0.093490
72 1250 1 0.000693 -0.133657

### Double-Zero Wheel — Pay Table 4

Bet
Match
Pays Combinations Probability Return
0 or 1 160 8 0.005540 -0.108033
2 to 9 18 68 0.047091 -0.105263
10 to 25 3 328 0.227147 -0.091413
26 to 45 1 662 0.458449 -0.083102
46 to 57 4 258 0.178670 -0.106648
58 to 70 10 117 0.081025 -0.108726
71 or 72 430 3 0.002078 -0.104571

### Double-Zero Wheel — Pay Table 5

Bet
Match
Pays Combinations Probability Return
0 to 2 100 13 0.009003 -0.090720
3 to 20 4 261 0.180748 -0.096260
21 to 40 1 642 0.444598 -0.110803
41 to 58 2 423 0.292936 -0.121191
59 to 65 16 77 0.053324 -0.093490
66 to 70 50 25 0.017313 -0.117036
71 or 72 430 3 0.002078 -0.104571

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