Questions tagged [probability]

deals with computing probabilities for many commonly occurring events in the game of poker

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7 answers
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Pocket pair starting hands vs. probability of opponent having a pocket pair

According to Wikipedia, the probability of being dealt any pocket pair as the starting hand is ~6% (78/1326=0.0588), but yet the probability of facing another player holding a larger pair when holding ...
Theo's user avatar
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12 votes
2 answers
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Starting hands probability

The following is a passage from Wikipedia on starting hands probability: The 1,326 starting hands can be reduced for purposes of determining the probability of starting hands for Hold 'em—since ...
Theo's user avatar
  • 986
9 votes
2 answers
721 views

Drawing Dead Preflop?

Suppose there is some situation where Player A moves all-in and ALL Players call such that all players are all-in (they have equal amounts of chips, so no side-pots). Is there a possible distribution ...
user45266's user avatar
8 votes
4 answers
394 views

Systematic all-in

This is a theoretical question, following what I have seen in some low blinds cash games. You generally cannot buy-in more than 100BB. Say at some point, you reached 10,000 BB. All you adversaries ...
wwjoze's user avatar
  • 181
7 votes
4 answers
16k views

Best hand versus AA

Statistically what is the best hand versus AA (other than AA) I had read 56, 67, 78 Suited not the suit of any ace 56 being the best I cannot figure how 56 is better Ran on poker stove ...
paparazzo's user avatar
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7 votes
1 answer
977 views

Equity calculation

Flop = T♥ 7♥ 6♥ Player 1 = 4♠ 3♥ Player 2 = 5♥ 2♠ Whats the equity of Player 1 on this flop ? Equity calculators give it 43.54% (18.5% for tie and ...
Korn's user avatar
  • 73
7 votes
4 answers
2k views

Probability of x pocket pairs at a table of n people (NLHE)?

With n people at a table, what is the probability that x of them are dealt pocket pairs? There are several easy ways to approximate this but I was wondering there was an elegant solution. Any takers?
Matt's user avatar
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6 votes
4 answers
25k views

What are the actual odds of being dealt pocket Aces?

I have been looking at the way people calculate the odds of poker hands for a few hours and i think there is a HUGE flaw. In poker a player is never dealt two CONSECUTIVE cards. This in my view ...
Extrainnings's user avatar
6 votes
1 answer
552 views

Hold'em: Why does K♠️7♠️ beat A♠️2♠️ more frequently than K♠️8♠️ does?

According to this site: K♠️7♠️ beats A♠️2♠️ 39.10% of the time (and ties 0.62%). K♠️8♠️ beats A♠️2♠️ 38.71% of the time (and ties 0.61%). Why is this? I expected the two probabilities to be the ...
tba's user avatar
  • 163
6 votes
2 answers
9k views

How do I calculate poker hand probabilities?

This is a tutorial for calculating poker probabilities from scratch. It is what I learned in my degree and even beforehand when I created and 5-card draw hand strength calculator. The intention of ...
Luis Masuelli's user avatar
6 votes
4 answers
215 views

Why isn't every value player rich?

I'm a beginner, sorry if this question is absurd. If a player simply bets with probabilities in mind, and always made the correct move for every action, would s/he become rich in the long run? If ...
Christian Bouwense's user avatar
6 votes
11 answers
23k views

What are the odds of having 2 Quads in the same hand?

Just watched a video that went as follows: Player 1 (Button): Q♥Q♠ Player 2: 9♥9⋄ Player 3: 2♣2♠ Flop: Q⋄9♠Q♣ Turn: 5♠ River: 9&...
Mat's user avatar
  • 61
6 votes
4 answers
3k views

Formula for making a single pair on the flop

I'm trying to get the probability of pairing only one hole card on the flop. According to this calculator, http://www.texasholdem-poker.com/calculator?card1=8&card2=13&chance_format=...
Justin Carlson's user avatar
6 votes
2 answers
2k views

Starting hands head up

Does anyone have charts for starting hands heads by position up or even order of hands? I know any Ace and any pair is valuable but I cannot find more specific guidelines. I found order of hands ...
paparazzo's user avatar
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5 votes
2 answers
1k views

Chances of 5 way chop (flush board)

What is the exact probability that 5 players at a table will be dealt no clubs (or hearts or whatever) ? Happened to me when all 5 community were all clubs (2,3,5,K,9), thereby a 5 way chop.
The Tourminator's user avatar
5 votes
0 answers
2k views

Can anyone suggest a limit holdem training app for Android?

First time poster in this part of the world, so apologies if I've posted this in the wrong area. In short; I used to play a lot of Poker in University over a decade ago, and then continued to play ...
user8812's user avatar
  • 161
4 votes
3 answers
19k views

Probability of flopping straight flush

Assume you're given 2 cards of the same suit, and the next three cards (flop) are also the same suit as your hole cards. What is the probability of that happening? So I figured out that 2 cards have ...
user2582622's user avatar
4 votes
1 answer
347 views

hand distribution in 6 max vs full ring

I have heard that the distribution in a 6 max game is similar to that of a 9 or 10 handed game where the extra players have folded. I am wondering how true that is. Seems like there may be a higher ...
Ray Tayek's user avatar
  • 364
4 votes
2 answers
273 views

What's wrong with my equity calculation?

When answering this question, I went ahead and tried to do a manual equity calculation for the scenario described (7♥4♠ vs A♠8♣ on a board of 6♥2♥8♥), ...
3N1GM4's user avatar
  • 1,564
4 votes
2 answers
166 views

Calculating Odds for 3 of a kind

I am confused by this odds calculation here: https://www.pokernews.com/poker-tools/poker-odds-calculator.htm Basically the scenario that I have is below: I understand everything except for the 3 of a ...
PutsandCalls's user avatar
4 votes
1 answer
231 views

Why are the odds 16 to 6 that any given player does not hold a pocket pair?

In the book Ken Warren teaches Texas Holdem, its explained that there are 1,326 possible combinations of hole cards. Then its explained that if you disregard suits, there are 169 possible two-hole ...
Evan Welch's user avatar
4 votes
2 answers
2k views

Texas Hold'em heads up pre-flop AK vs 89s

According to online calculators: A♥K♦ (57.91%) vs 7♣8♣ (41.71%) A♥K♦ (59.42%) vs 8♣9♣ (40.19%) A♥K♦ (58.59%) vs 9♣T♣ (41.00%) Why is 8♣9♣ worse odds than the other 2? I assume it has something to ...
ricka's user avatar
  • 143
4 votes
4 answers
14k views

What is the probability of seeing a royal flush and a four of a kind in the same round with ten players?

We were wondering and concluded it is possible to have two players, one having a royal flush, the other having four of a kind, if there is a pair and three high cards on the table. But the situation ...
chaosflaws's user avatar
3 votes
2 answers
3k views

What are the odds of flopping a straight flush with 62s?

I've been wondering what the odds are of flopping a straight flush with 62s.
Brent Morrow's user avatar
  • 1,780
3 votes
2 answers
3k views

Probability Of Getting A Straight Flush Or Royal Flush When Holding QJs

Given that you are dealt the J♥ and Q♥, what is the probability that you will eventually make a straight flush or royal flush? Having these cards in your hand means that: 1). the only ...
user2582622's user avatar
3 votes
3 answers
2k views

Chance of winning heads-up by always shoving pre-flop

I've been generally wondering about what sort of winrate good players can expect vs. worse players, and thought of an interesting limit to this winrate. In NLHE, if the worse player just blindly ...
user68945's user avatar
3 votes
1 answer
2k views

Versus random hands

I have written a program to rate 2 hole cards (your hand) against a single random hand. It works - I compared its results to a published list. Your two hole cards are combined with a common 5 card ...
paparazzo's user avatar
  • 6,921
3 votes
6 answers
5k views

What are the chances of losing with a King high Straight Flush?

Also: is the probability so small that this has never happened?
jacknad's user avatar
  • 1,171
3 votes
2 answers
510 views

Probability your opponent has a pocket pair when you are paired versus not

If I am holding a pocket pair does that effect the probability my opponent has a pocket pair.
paparazzo's user avatar
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2 votes
3 answers
538 views

Probability of forming a flush question (dependent vs independent event)

I'm slightly confused at the probability calculations for hands. Here's the problem: Suppose you have two hearts. The flop comes and has two hearts. What is the probability of forming a flush on the ...
Steve's user avatar
  • 23
2 votes
1 answer
151 views

Draw poker should you keep AK

5 card draw and you have AK and junk. Assume unsuited. A♠K♣T⋄8♣5♠ Should you keep AK or just the A?
paparazzo's user avatar
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2 votes
2 answers
356 views

Quads sevens 5 times in one night

I got quad sevens five times in 3 hours . The first three times were within the same round of ten hands. Without a technical explanation what are the odds of three times in ten hands and five times ...
Dennis's user avatar
  • 21
2 votes
1 answer
364 views

Probability of flopping a straight

I was thinking about calculating the probability of flopping straights, with certain hands. First, I thought about situations: obviously the difference between two cards can't be higher than 4. If the ...
samivagyok's user avatar
2 votes
1 answer
530 views

What are the 5 card hand probabilities

Of all the 5 card poker hands what are the probabilities? And how are probabilities derived?
paparazzo's user avatar
  • 6,921
2 votes
1 answer
170 views

Probability of flush on board and no player has a flush card

What is the chance the board has a flush. And two players have no flush card.
paparazzo's user avatar
  • 6,921
2 votes
1 answer
4k views

Short deck probability

Short deck is remove 2-5 so 36 cards left. A6789 is a straight. What is the hand order and probability. For example a flush is harder to make but a straight is easier. Ideally post the ...
paparazzo's user avatar
  • 6,921
2 votes
1 answer
570 views

What are the odds of drawing a seven card straight flush

I had the unbelievable experience of drawing a seven-card straight flush while playing with five other players with one deck. The hand started with the ace of spades and ended with the seven of ...
Manny Lewis's user avatar
2 votes
1 answer
226 views

What are the odds of the river containing a full house?

I was watching a game in a bar the other day and the river ended up containing a full house. What are the odds of this?
Patrick Gatewood's user avatar
2 votes
1 answer
978 views

How to count the number of starting hands in Texas Hold 'em

I'm revisiting the excellent book by Tony Guerrera, Killer Poker by the Numbers. In the first chapter he goes over how to count the number of possible starting hands but leaves, as an exercise for the ...
Ramy's user avatar
  • 165
2 votes
3 answers
260 views

Realistic Community Cards

I play online poker on a few sites and recently, I have marked that I'm actually getting a series of bad beats from some awful (ly "lucky") players. My question is what are the odds of following ...
vish4071's user avatar
  • 121
2 votes
1 answer
419 views

Straight draw in heads up?

With a stack of 3000, 50/100 blinds, I was holding: 2 4 (not suited) I'm big blind in a heads up game. Opponent matches the big blind, so I end up playing a hand I'd never play otherwise. Flop:...
Joe's user avatar
  • 123
2 votes
0 answers
181 views

Poker pre-flop probability training tool

Is there a freeware, better FLOSS, online or preferably offline trainer for preflop probabilities. I imagine different play modes with entering percentages under measurement of time resulting in ...
Kalle Richter's user avatar
2 votes
1 answer
298 views

What are the odds of at least one player getting a hand from a range?

I've been trying to work this out for a while but I'm really struggling. I know the odds for a single player getting a hand from a range is simply: Combinations of hands in range / Total possible ...
user avatar
1 vote
2 answers
580 views

Outs when needing more than one card

I recently learnt about outs, and the magic 4-2 rule. However all the examples that I see use the example of needing one card to complete your set. Why we don't consider the fact that I can have two ...
Hommer Smith's user avatar
1 vote
2 answers
329 views

Chances of an opponent not having a flush on 3-flush board

If there are 5 cards on the board and 3 of them are hearts and I don't have any hearts in my hand, what is the probability of someone else NOT having 2 hearts in their hand?
Babis Vlaxopoulos's user avatar
1 vote
1 answer
1k views

Does AA have the highest Equity in "double-board-bomb-pot" with 9 players?

I fielded a Poker StackExchange question the other day about whether AA is the best starting hand in Texas Hold-Em No Limit vs. 8 other players. Indeed, it is so. Now I have a variant of this ...
Scott Skiles's user avatar
1 vote
2 answers
4k views

How to calculate probability of flopping a set (with pocket pairs)?

Building a poker program and would like to make sure I have my calculation correct. If a player is holding pocket pair, how does one calculate the probability of flopping a set (one card out of the ...
jfviray's user avatar
  • 13
1 vote
2 answers
96 views

Poker hand suited connector

6 handed 1/2 cash All around 100 bb but bb at 30 Pre Hero in CO with T♠ 8♠ UTG open for 4 bb with one caller, I call, btn fold, sb fold, bb calls. I am lovin it. Flop Pot is 17 ...
paparazzo's user avatar
  • 6,921
1 vote
1 answer
750 views

Distinct 7 card poker hands

From this link The number of distinct 5-card poker hands that are possible from 7 cards is 4,824. Does anyone have the break down of the 4,824? A list of the 4824? Better yet a program to ...
paparazzo's user avatar
  • 6,921
1 vote
2 answers
5k views

Odds that someone makes or holds a pair on the flop, based on the # of players

QUESTION: In Hold ’Em, what are the combined odds after the flop that at least one player at the table either has a pair in the hole or has flopped at least a pair, depending on the number of players? ...
Taghkanic's user avatar
  • 113