Last Updated: September 1, 2016

# Odd One In

## Introduction

Odd One In is a simple card game by 1x2 Gaming. Two cards are dealt and the total taken, where each card is scored as in blackjack, with aces always one point. There are a host of bets to choose from but all of them require the total points to be odd.

## Rules

1. A single 52-card deck is used.
2. Aces count as one point, 2-10 go by pip value, and all face cards are 10 points.
3. Play begins with the player making bets on the bets listed below.
4. When the player is done, the dealer will deal two cards.
5. If the total points are odd then the dealer will pay those bets that win. If the total is even, every bet loses.

### Odd One In — List of Bets

Hand Pays Description
Odd 1 to 1 Total points odd
Odd -- Single Suit 30 to 1 Total points odd and both in the specified suit
Odd -- Single Color 7 to 1 Total points odd and both in the specified color
Odd -- Different Colors 3 to 1 Total points odd -- one red and one black
Small odd 3.5 to 1 Total points odd and 11 or less
Large odd 2.5 to 1 Total points odd and 13 or more
3 & 5 25 to 1 Total of 3 or 5
5 & 7 15 to 1 Total of 5 or 7
7 & 9 10 to 1 Total of 7 or 9
9 & 11 5.5 to 1 Total of 9 or 11
11 & 13 4 to 1 Total of 11 or 13
13 & 15 5 to 1 Total of 13 or 15
15 & 17 6 to 1 Total of 15 or 17
17 & 19 8 to 1 Total of 17 or 19
3 75 to 1 Total of 3
5 35 to 1 Total of 5
7 25 to 1 Total of 7
9 18 to 1 Total of 9
11 9 to 1 Total of 11
13 10 to 1 Total of 13
15 12 to 1 Total of 15
17 15 to 1 Total of 17
19 18 to 1 Total of 19

## Analysis

The following table shows what each bet pays, the number of winning combinations out of 1,326 possible, the probability of winning, and the expected return.

### Odd One In — Analysis

Bet Pays Combinations Probability Return
Odd 1 640 0.482655 -0.034691
Odd -- Single Suit 30 40 0.030166 -0.064857
Odd -- Single Color 7 160 0.120664 -0.034691
Odd -- Different Colors 3 320 0.241327 -0.034691
Small odd 3.5 288 0.217195 -0.022624
Large odd 2.5 352 0.265460 -0.070890
3 & 5 25 48 0.036199 -0.058824
5 & 7 15 80 0.060332 -0.034691
7 & 9 10 112 0.084465 -0.070890
9 & 11 5.5 192 0.144796 -0.058824
11 & 13 4 240 0.180995 -0.095023
13 & 15 5 208 0.156863 -0.058824
15 & 17 6 176 0.132730 -0.070890
17 & 19 8 144 0.108597 -0.022624
3 75 16 0.012066 -0.082956
5 35 32 0.024133 -0.131222
7 25 48 0.036199 -0.058824
9 18 64 0.048265 -0.082956
11 9 128 0.096531 -0.034691
13 10 112 0.084465 -0.070890
15 12 96 0.072398 -0.058824
17 15 80 0.060332 -0.034691
19 18 64 0.048265 -0.082956

## Strategy

The lowest house edge is 2.26% on (1) a small odd total and (2) a total of 17 & 19. So my advice is to stick with those bets, if you must play at all.