The goal of poker is to achieve a higher valued card combination than your opponents. This combination consists of five cards. Two "hole" cards are yours to see only, and any three of the five cards which the dealer deals one after another. Knowing all possible combinations, their rank and the probability of obtaining them is the foundation to your success in playing.
The royal flush is the highest poker combination you can have. It contains an ace, king, queen, jack and ten, all in the same suit. The probability of making this combination is 1 : 649,739.
The second highest poker combination is the straight flush. It contains five cards in sequence, all in the same suit. The probability of making this combination is 1 : 64,973.
Four of a Kind
Four of a kind is the third highest poker combination, containing four cards of one rank. The probability of making this combination is 1 : 4,164.
Three matching cards with a pair of matching cards makes the combination named Full House. The three matching cards determine the strength of the combination in the case that more players have a Full House. The probability is 1 : 693
Putting together 5 cards of the same suit lands you a Flush. The probability of this combination is 1 : 508.
A straight contains five cards of sequential rank with different suits. It ranks just behind a flush and the probability of this combination is 1 : 254.
Three of a Kind
Three of a kind contains three cards of the same rank. Should more players have this combination, the rank of the three of a kind cards determines strength of the hand. The probability is 1 : 46.
Two pairs of cards of the same rank. This combination follows three of a kind. The probability of making two pairs is 1 : 20.
One pair of cards of the same rank. The rank of the pair cards determines the strength of the hand. The probability of making a pair is 1 : 2.36.
If no player makes any of the combinations above, the highest ranked card determines the winner. The probability of having a higher card than your opponent is 1 : 2.