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Craps



Craps

MYTHS ABOUT THE ODDS IN CRAPS

(Section 2 - Overview)

Craps is no different than any other casino game in that it is very useful to understand basic mathematics in order to play it.

Craps Odds In doing any kind of research on the game, you will no doubt find various writers who will advise you to seek out "hot shooters" at the table and bet with them, but this has no real sound mathematical basis. Heck, ask any of those shooters what it is that has made them hot and they would be stuck for a plausible answer.

You'll also read a lot about the "law of averages." That's supposed to mean that if an eight was rolled, then a five, then a ten, this chain of events might somehow increase the possibility that a 7 will be rolled next, because that number is somehow "due."

All of that sounds pretty good if you have nothing else to go on, but it is simply not true.

If we are speaking purely along mathematical lines, just because a number has been rolled, that doesn't decrease the odds of that number being rolled again on the next turn.

When you hear that "The dice have no memory" that is certainly a true statement.

As a mathematical exercise, craps follows something called the "law of independent trials." This means that the occurrence of one event has absolutely no bearing on the probability that any subsequent event will happen. The odds are 5 to 1 that if someone picks up a pair of dice they're going to roll a 7, and it's going to be 5 to 1 every time those dice are thrown, no matter how many times a seven comes out. Nothing's going to make that any different, now or in the future

If you took a jar where there were 50 pairs of numbers represented by ping pong balls, and you removed one ball, and kept it out, that would reduce (by 50%) the chances that another ball with the same number would be taken out of the jar next. However, if you just put the ball back into the jar each time, the odds would not change, simply because the composition of the contents of that jar of ping pong balls would not change.

That really constitutes the difference between playing craps and playing blackjack in the casino. You see, when cards are removed from the deck in blackjack, they are placed in a discard rack (if you're lucky enough to play in a game that is free of automatic shufflers) and removed from play. You can bet that this has an effect one which cards can come up next. In fact, those people who count cards at blackjack actually DO bet on it, because such activity changes the odds dynamically each time a card is dealt. In craps, you are not removing any possibilities from play, so the odds don't change. They are "static." The odds on all the bets are the same, every time. When the automatic shuffler is used in blackjack, it has roughly the same effect on the game.

For purposes of this conversation, this pertains to us because, for one thing, it doesn't really matter where you enter the game; if you have learned anything about craps you will know the odds on each of the bets. So if you're playing with others it doesn't matter what anyone else is doing at the table.

Also, once the various bets and their payouts are learned, it actually simplifies the game for the player who doesn't want to be concerned with learning strategies for deriving an "edge" over the casino, because that edge isn't happening. Each of the available craps wagers has a built-in advantage to the house; if you want to only place bets in which you are giving up less than 2% to the house, you're able to do that regardless of whatever else is happening

That won't change the long-term odds of the game, whether you want to believe in the "law of averages" or not.

Breaking Down The Numbers

Craps
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