Examining Casino Odds: A Deep Dive into Probability

Whoever said casinos were honest places never gambled..

Walking into a casino feeling lucky is one thing. But walking out broke wondering where it all went wrong is another story.

Let me explain how casino odds work…

The house has a mathematical advantage in every game. There’s no way around that fact. But that doesn’t mean you shouldn’t learn how probability works at a casino. When you know the odds, you can avoid sucker bets and choose the games with the best odds of winning.

In this article, I’ll cover exactly how casino probabilities work and which games offer you the best chance of winning.

Stick around – it’s about to get interesting…

What You’ll Learn

• How Casino Probability Works
• How To Read The House Edge
• Casino Games With The Best Odds
• Gambling Myths Debunked

How Casino Probability Works

Casino probability is pretty simple once you break it down.

Every game in a casino is designed with a mathematical advantage that favours the house. This doesn’t mean they’re rigged. It just means that the math works against you from the very beginning.

Think about how much money casinos make in a year…

A report by the casinostats found that casinos all over the world grossed $305 billion dollars in gaming revenue alone for 2024.

That’s just the gambling revenue. Casinos make money from hotels, restaurants, drinks, you name it.

But the point is – casinos wouldn’t be in business if the house didn’t have a massive advantage.

Let’s use a coin flip as an example…

When you flip a coin there’s a 50/50 chance it could be heads or tails. Fair odds right? Well not at a casino. Every game is built with a small mathematical advantage on every bet you place.

This brings me to my next point…

Because the advantage is so tiny on each bet, it takes millions (sometimes billions) of bets for the house edge to make its presence known. That’s why casinos don’t care if you win a few hands here and there.

They know the odds are in their favour and over time, you will lose.

But by knowing the odds, you can avoid games with the worst odds and manage your bankroll wisely. Let’s take a look at some of the house edge percentages by casino game.

How To Read The House Edge

The house edge is the casino’s mathematical advantage expressed in percentages.

If Blackjack has a 0.5% house edge that means the casino expects to win 50 cents for every dollar played at the blackjack table.

As you can imagine, the lower the house edge the better your chances of winning are.

Take a look at these actual numbers…

Slot machines (which most people know are MONEY FAGS!) averaged a 7.2% win percentage at Nevada casinos in 2024. That means for every $100 you wagered on slots you’d expect to lose $7.20.

But here’s the thing..

House edges vary by game (and sometimes within a game). So you’ve got games that offer fantastic odds and games that rape your bankroll.

Check out these common house edges by game..

• Blackjack – 0.5% to 2%
• Baccarat – 1.06%
• Craps – 1.41%
• Roulette – 2.7% (European)
• Roulette – 5.26% (American)
• Slots – 2% to 15%
• Keno – 25% to 40%

Look at how ridiculous the difference is between blackjack and keno.

You definitely don’t want to be playing blackjack and keno at the same casino trip. Pretty obvious which game offers the best odds.

Casino Games With The Best Odds

So which casino games should you be playing?

If you want to truly maximise your odds of winning, you want to stick with the table games that offer the lowest house edge.

Blackjack

Argument can be made that blackjack is the best game in the casino when it comes to odds. If you use basic strategy while playing blackjack you can lower the house edge to below 1%. That’s about as good as it gets my friends.

Plus blackjack is actually fun to play (unlike slots lol). There’s skill involved and once you learn basic blackjack strategy it’ll seriously improve your odds of winning. Here’s the thing – you don’t need to be a math whiz to master basic strategy.

Baccarat

Baccarat is another great choice when it comes to playing for the best odds. The banker bet has a house edge of only 1.06%. It’s one of the lowest in the casino. Another cool thing about baccarat is you don’t need to learn any strategy to play successfully. Simply bet on banker or player and cross your fingers.

Craps

Craps gets a bad rap for some reason. But the reality is craps offers some of the best odds at the casino. If you ONLY make the pass line bet you’ll be playing with a house edge of 1.41%.

Throw on some free odds (which has a 0% house edge) and now you’re playing with a negative house edge! Learn how to bet casino odds and you’ll be playing with the house’s money.

Here are some games you should stay away from…

Keno is the game you want to avoid at all costs. Seriously it could be argued that keno is the worst possible game you could play in a casino. Depending on the wager you make the house edge can be up to 40%. OUCH!

Slot Machines

Slot machines are another casino game that offer HORRIBLE odds for players. We all know they’re fun and they’re easy to play. That’s why the house edge is so high.

Side Bets

Don’t be tempted by side bets on games like blackjack, craps, roulette, etc. The payouts may look juicy but the house edge on these bets is astronomical.

Gambling Myths Busted

Now let’s clear up some gambling myths that cost players billions of dollars each year..

Myth #1 – Hot and Cold Streaks

There is no such thing as hot and cold streaks.. Every spin of the roulette wheel is completely independent. The wheel has no memory and previous results have 0 effect on future results.

This is known as the gambler’s fallacy and it will bleed you dry if you believe in it.

Think me odds are saying red comes up 50% of the time and black 49.26% (because of the zero). If the ball landed on red 10 times in a row I will still 50/49.26 that the next spin will be black.

The roulette wheel doesn’t care how much money you have in your bankroll. Or how lucky you feel that day.

Myth #2 – Casinos Rig Their Games

Casinos make so much money they don’t have to rig any games. The math is already in their favour every single time you place a bet. They would never risk legal prosecution by rigging their games and spoiling their relationship with huge gaming companies like Microgaming and IGT.

If you’ve played any online slots you already know the casino software determines your odds..

Myth #3 – Betting Systems Work

No betting system can beat a negative expected value. Even if you double your bet every time you lose.

Betting systems like the Martingale are surefire ways to win IF you have infinite bankrolls and never run out of money.

The house edge doesn’t care how much you bet on any particular wager.

You can only beat the house by playing games that matter your skill (ie blackjack poker).

Practice patience and playing proper strategy. That’s the ONLY way to give yourself the best chance at winning.

Play The Odds Like A Pro

Alright, now that you know how casino odds work.

Remember, every game has a house edge.. Some games just have a smaller house edge than others. Stick with table games like blackjack, baccarat, and craps for the best odds of winning. Don’t play games with crazy high house edges like keno or pay crazy payouts on side bets.

Keep these things in mind..

• Know which games have the best odds
• Know the house edge on every game
• Remember past results never predict future outcomes
• There is no secret formula to win at a casino..

Learning how probability works at casinos will not make you rich. But it will help you make smarter decisions with your money and enjoy your time at the casino that much more.