betshah casino: Teach you how to calculate the probability of drawing cards in Texas Hold’em poker in one minute

betshah casino “The Four-Two Rule” is a method of estimating probability, allowing you to quickly calculate the probability of the card you want appearing.

For example: the cards on the table are A-6-7-Q, and your hand is 8-9. You want another 5 or 10 to make a straight, but you only have one last chance.

Strictly calculating the poker probability should look like this:

There are 52 cards in a deck, remove 3 flop cards, 1 turn card, and 2 hand cards, leaving 52-3-2-1=46 cards;

The cards you want are 4 5s and 4 10s, a total of 4+4=8.

So at this time, your probability of getting a straight on the river is: 8/46=0.1739, or 17%.

You may think that this calculation will be more troublesome, so there is the rule of four and two, that is: there are 4+4=8 cards you want.

There is only one last chance left, so let 8*2=16, that is, you have about 16% chance of hitting a straight, which is basically similar to the above 17%.

This is the “two” in the four-two rule.

Of course, this is true if you still have two chances, the river and the turn.

For example, if the flop on the table is A-6-7, your hand is still 8,9.

The difference is that you have two rounds of opportunities to wait for 5 or 10, a total of 8 cards you want.

Then the probability of you hitting a straight in two rounds is:

1-(47-8)/47*(46-8)/46=0.3145, which is about 31%.

Then use the 4-2 rule, 8*4=32, that is, you have about 32% chance of hitting a straight. Is it very close to the theoretical value?

This is the “four” in the four-two rule.

In short, first think about the number of cards you want, then multiply by 4 when there are still two rounds of opportunities, and multiply by 2 when there is still one round of opportunities. What you get is the probability that the card you want will appear next. Then, decide what to do next based on the players and battle conditions in the real poker world. Making good use of the 4-2 rule can help you quickly estimate the probability.