- Blackjack Odds Sheet
- Blackjack House Edge Calculator
- How Many Decks Are Used In Blackjack In Vegas
- How Many Decks Of Cards Are Used In Blackjack
- Double Deck Blackjack Strategy
Blackjack is a popular casino game in online and land-based casinos.
Blackjack Odds Sheet
Even if it is possible to count the card decks in use in online Blackjack games, the fact remains that most casinos do not disclose exactly how many card decks are being used. Learning such information well might involve directly asking the online casino hosting such games and there is not really much that can be done with such information. If you get REALLY bored with that, then learn to use a half-deck divisor for the entire shoe. My Philosophy for double deck and single deck: Use a half-deck divisor. If you’ve already learned full deck, half deck then you can already divide by 1.5 decks and 0.5 decks. If you get REALLY bored with that, then learn to divide by quarter decks. Blackjack in and of itself is merely a deck of cards and (summarized!) you play the rules and dealer plays rules and the best outcome wins! Blackjack comes in several variants. The game can be played with 1, 2, 4, 6, and 8 dec.
It has drawn many players from all over the world both newbies and gambling experts.
Blackjack, just like any other casino game, has set of rules during game-play that players need to follow to be able to walk away with huge winnings from the casino.
Counting cards is one of the popular techniques that players use to lower the house edge.
In this article we discuss, the number of decks in blackjack games and how counting cards work.
We also highlight:
• How many cards in a deck of cards will be used in game play and how many cards are in a blackjack deck, how many cards are in a deck of cards and how many black cards are in a deck.
• How may card in a deck will the player be dealt with
• How many decks of cards for blackjack does a casino use in a day or how many decks of cards are used in blackjack
• How do you count cards, how to card count blackjack cards, how to cards blackjack systems, counting cards in blackjack, and learn to count cards
• How does counting cards work? Why is counting cards illegal?
• What is blackjack meaning, blackjack double meaning, and what does double mean in blackjack and what is insurance in blackjack
• How may card in a deck will the player be dealt with
• How many decks of cards for blackjack does a casino use in a day or how many decks of cards are used in blackjack
• How do you count cards, how to card count blackjack cards, how to cards blackjack systems, counting cards in blackjack, and learn to count cards
• How does counting cards work? Why is counting cards illegal?
• What is blackjack meaning, blackjack double meaning, and what does double mean in blackjack and what is insurance in blackjack
- Appendices
- Miscellaneous
- External Links
Introduction
In playing blackjack online one problem I often face is not knowing how many decks are being used. This is a particular problem with Real Time Gaming casinos. The help files often do not indicate this rule, as well as other rules, and customer support are notorious for giving incorrect information on their own rules. So I devised a test to help determine the number of decks. This test is based on the player's first two cards and the dealer's first two.
The following table shows the probability for various configurations of the initial four cards in blackjack. Note the probabilites for a suited pair. Of all the hands I feel this is the best to test for, given both it's frequency and correlation to number of decks.
4-Card Hand | 1 deck | 2 decks | 4 decks | 6 decks | 8 decks |
---|---|---|---|---|---|
4 singletons | 0.676110 | 0.63692 | 0.618504 | 0.612530 | 0.609573 |
Non-suited pair | 0.304250 | 0.286614 | 0.278327 | 0.275638 | 0.274308 |
Suited pair | 0.047769 | 0.069582 | 0.076566 | 0.080006 | |
Two non-suited pairs | 0.010372 | 0.009771 | 0.009488 | 0.009397 | 0.009351 |
Two suited pairs | 0.000271 | 0.000593 | 0.000725 | 0.000796 | |
Two pair - 1 suited | 0.003257 | 0.004744 | 0.00522 | 0.005455 | |
3 of a kind - 3 suits | 0.009220 | 0.008685 | 0.008434 | 0.008353 | 0.008312 |
3 of a kind - 2 suits | 0.006514 | 0.009488 | 0.010441 | 0.010910 | |
3 of a kind - 1 suit | 0.000527 | 0.000773 | 0.000909 | ||
4 of a kind - 4 suits | 0.000048 | 0.000045 | 0.000044 | 0.000044 | 0.000043 |
4 of a kind - 2 suits (3&1) | 0.000033 | 0.000048 | 0.000057 | ||
4 of a kind - 2 suits (2&2) | 0.000017 | 0.000037 | 0.000045 | 0.000050 | |
4 of a kind - 3 suits | 0.000136 | 0.000198 | 0.000218 | 0.000227 | |
4 of a kind - 1 suit | 0.000001 | 0.000002 | 0.000003 | ||
Total | 1 | 1 | 1 | 1 | 1 |
Blackjack House Edge Calculator
To determine the number of decks in an online blackjack game keep a tally of both the total number of hands played and the number of suited pairs. Only count a hands as a suited pair if the other two are singletons. For example one suited pair and one non-suited pair does not count. In a single deck game the ratio of suited pairs to total hands will obviously be zero. In double deck this ratio will be about 4.8%. In a 4-deck game the ratio increases to 7.0%. After that the differences are too subtle are to tell without a gigantic sample.
Of course if you ever notice three of the same card on the screen at once that rules out a double deck game immediately. Despite my lack of faith in customer support knowing their own rules I would suggest at least asking. If they give you an incorrect answer, and you can prove it, you may get some free money in your account as a way of thanks. Penny slot machines free slots. This has happened to me several times.
How Many Decks Are Used In Blackjack In Vegas
Unfortunately it takes a fairly large sample size to have confidence in the number of decks between 2 and 4. After 250 hands the probability that the sample mean in a 2-deck game will be greater than 6.96% (the 4-deck theoretical mean) is 5.29%. Likewise the probability that the sample mean in a 4-deck game will be less than 4.78% (the 2-deck theoretical mean) is 8.76%. Increasing the sample size to 500 these numbers become 1.11% and 2.76%. At 1000 the numbers are 0.06% and 0.34%.